/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:18:10,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:18:10,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:18:10,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:18:10,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:18:10,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:18:10,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:18:10,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:18:10,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:18:10,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:18:10,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:18:10,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:18:10,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:18:10,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:18:10,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:18:10,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:18:10,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:18:10,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:18:10,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:18:10,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:18:10,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:18:10,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:18:10,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:18:10,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:18:10,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:18:10,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:18:10,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:18:10,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:18:10,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:18:10,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:18:10,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:18:10,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:18:10,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:18:10,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:18:10,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:18:10,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:18:10,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:18:10,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:18:10,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:18:10,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:18:10,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:18:10,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:18:10,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:18:10,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:18:10,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:18:10,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:18:10,269 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:18:10,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:18:10,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:18:10,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:18:10,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:18:10,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:18:10,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:18:10,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:18:10,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:18:10,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:18:10,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:18:10,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:18:10,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:18:10,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:18:10,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:18:10,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:18:10,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:18:10,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:18:10,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:18:10,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:18:10,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:18:10,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:18:10,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:18:10,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:18:10,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:18:10,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:18:10,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:18:10,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:18:10,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:18:10,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:18:10,768 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:18:10,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-29 12:18:10,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b4de76d9/0974351b6fe84910911f406a0b9ae38d/FLAG535d498cd [2020-10-29 12:18:11,663 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:18:11,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-29 12:18:11,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b4de76d9/0974351b6fe84910911f406a0b9ae38d/FLAG535d498cd [2020-10-29 12:18:11,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b4de76d9/0974351b6fe84910911f406a0b9ae38d [2020-10-29 12:18:11,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:18:11,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:18:11,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:18:11,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:18:11,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:18:11,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:18:11" (1/1) ... [2020-10-29 12:18:11,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d235be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:11, skipping insertion in model container [2020-10-29 12:18:11,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:18:11" (1/1) ... [2020-10-29 12:18:11,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:18:12,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:18:12,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:18:12,270 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:18:12,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:18:12,413 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:18:12,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:12 WrapperNode [2020-10-29 12:18:12,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:18:12,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:18:12,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:18:12,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:18:12,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:12" (1/1) ... [2020-10-29 12:18:12,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:12" (1/1) ... [2020-10-29 12:18:12,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:12" (1/1) ... [2020-10-29 12:18:12,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:12" (1/1) ... [2020-10-29 12:18:12,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:12" (1/1) ... [2020-10-29 12:18:12,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:12" (1/1) ... [2020-10-29 12:18:12,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:12" (1/1) ... [2020-10-29 12:18:12,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:18:12,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:18:12,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:18:12,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:18:12,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:18:12,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:18:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:18:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:18:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:18:12,620 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:18:12,620 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:18:12,621 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:18:12,621 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:18:12,621 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:18:12,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:18:12,622 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:18:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:18:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:18:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:18:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:18:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:18:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 12:18:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:18:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:18:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:18:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:18:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:18:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:18:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:18:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:18:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:18:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:18:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:18:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:18:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:18:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:18:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:18:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:18:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:18:13,512 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:18:13,512 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:18:13,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:18:13 BoogieIcfgContainer [2020-10-29 12:18:13,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:18:13,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:18:13,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:18:13,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:18:13,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:18:11" (1/3) ... [2020-10-29 12:18:13,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ac52d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:18:13, skipping insertion in model container [2020-10-29 12:18:13,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:12" (2/3) ... [2020-10-29 12:18:13,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ac52d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:18:13, skipping insertion in model container [2020-10-29 12:18:13,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:18:13" (3/3) ... [2020-10-29 12:18:13,524 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-29 12:18:13,538 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:18:13,544 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:18:13,559 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:18:13,589 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:18:13,589 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:18:13,590 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:18:13,590 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:18:13,590 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:18:13,590 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:18:13,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:18:13,590 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:18:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-29 12:18:13,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 12:18:13,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:13,628 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] [2020-10-29 12:18:13,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:13,635 INFO L82 PathProgramCache]: Analyzing trace with hash 269946393, now seen corresponding path program 1 times [2020-10-29 12:18:13,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:13,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245045010] [2020-10-29 12:18:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:14,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 12:18:14,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:14,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-29 12:18:14,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:14,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 12:18:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:14,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:18:14,925 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:18:14,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:14,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:14,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:14,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:14,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:18:14,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:14,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:18:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:18:15,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:15,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:18:15,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:15,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:15,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 12:18:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:18:15,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:15,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:18:15,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:18:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:15,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:18:15,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:18:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:15,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:15,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:18:15,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:18:15,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:18:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:15,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:18:15,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:15,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:15,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:18:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:15,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:15,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:18:15,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:15,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:15,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:18:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:15,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:15,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:18:15,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:18:15,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245045010] [2020-10-29 12:18:15,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:18:15,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:18:15,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627840486] [2020-10-29 12:18:15,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:18:15,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:15,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:18:15,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:18:15,339 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 6 states. [2020-10-29 12:18:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:16,660 INFO L93 Difference]: Finished difference Result 271 states and 426 transitions. [2020-10-29 12:18:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:18:16,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-29 12:18:16,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:16,675 INFO L225 Difference]: With dead ends: 271 [2020-10-29 12:18:16,676 INFO L226 Difference]: Without dead ends: 169 [2020-10-29 12:18:16,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:18:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-29 12:18:16,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 154. [2020-10-29 12:18:16,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-29 12:18:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 244 transitions. [2020-10-29 12:18:16,761 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 244 transitions. Word has length 63 [2020-10-29 12:18:16,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:16,762 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 244 transitions. [2020-10-29 12:18:16,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:18:16,762 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 244 transitions. [2020-10-29 12:18:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 12:18:16,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:16,766 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] [2020-10-29 12:18:16,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:18:16,766 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:16,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:16,767 INFO L82 PathProgramCache]: Analyzing trace with hash -124420393, now seen corresponding path program 1 times [2020-10-29 12:18:16,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:16,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244171705] [2020-10-29 12:18:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:17,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:17,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 12:18:17,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:17,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-29 12:18:17,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:17,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:17,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 12:18:17,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:18:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:17,856 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:18:17,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:17,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:17,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:17,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:18:17,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:17,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:17,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:18:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:17,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:17,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:17,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:18:17,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 12:18:17,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:17,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:18:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:18:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:18,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 12:18:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:18,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:18,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:18:18,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:18:18,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:18,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:18:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:18:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 12:18:18,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:18:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:18,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:18,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:18,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:18,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:18:18,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:18,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:18,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:18,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:18,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:18:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:18,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:18,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:18,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:18,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:18,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:18:18,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:18,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:18,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:18,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:18,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:18,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:18,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:18:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:18,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:18,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:18,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:18,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:18:18,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:18,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:18,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:18,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:18:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:18,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:18,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:18,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:18,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:18,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:18,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:18:18,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244171705] [2020-10-29 12:18:18,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:18:18,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 12:18:18,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500288773] [2020-10-29 12:18:18,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:18:18,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:18,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:18:18,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:18:18,246 INFO L87 Difference]: Start difference. First operand 154 states and 244 transitions. Second operand 12 states. [2020-10-29 12:18:19,009 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:18:19,377 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:18:19,803 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:18:20,118 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:18:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:21,854 INFO L93 Difference]: Finished difference Result 266 states and 414 transitions. [2020-10-29 12:18:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:18:21,854 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-29 12:18:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:21,860 INFO L225 Difference]: With dead ends: 266 [2020-10-29 12:18:21,860 INFO L226 Difference]: Without dead ends: 169 [2020-10-29 12:18:21,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:18:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-29 12:18:21,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 154. [2020-10-29 12:18:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-29 12:18:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 223 transitions. [2020-10-29 12:18:21,889 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 223 transitions. Word has length 63 [2020-10-29 12:18:21,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:21,890 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 223 transitions. [2020-10-29 12:18:21,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:18:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 223 transitions. [2020-10-29 12:18:21,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 12:18:21,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:21,892 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] [2020-10-29 12:18:21,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:18:21,893 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:21,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:21,893 INFO L82 PathProgramCache]: Analyzing trace with hash 455314619, now seen corresponding path program 1 times [2020-10-29 12:18:21,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:21,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070133964] [2020-10-29 12:18:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:22,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:22,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:26,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:26,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:18:26,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:26,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:18:26,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:26,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:26,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:18:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 12:18:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:18:26,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:27,304 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:18:27,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:27,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:27,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:27,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:27,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:18:27,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:27,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:27,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:27,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:27,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:27,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:27,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:18:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:27,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:18:27,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:27,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:18:27,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:27,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:27,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:18:27,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:27,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:18:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:27,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:18:27,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:27,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:18:27,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:27,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:27,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:27,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:27,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:18:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:27,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 12:18:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:27,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:27,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:27,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:18:27,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:27,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:18:27,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:27,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:18:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:27,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:27,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:27,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:27,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:18:27,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:27,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:18:27,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:18:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:27,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:27,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:18:27,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:27,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:18:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:18:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:18:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:27,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:18:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:27,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:27,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:27,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:27,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:27,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:27,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:18:27,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070133964] [2020-10-29 12:18:27,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:18:27,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:18:27,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13656199] [2020-10-29 12:18:27,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:18:27,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:27,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:18:27,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:18:27,682 INFO L87 Difference]: Start difference. First operand 154 states and 223 transitions. Second operand 9 states. [2020-10-29 12:18:27,988 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:18:30,647 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:18:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:31,045 INFO L93 Difference]: Finished difference Result 372 states and 557 transitions. [2020-10-29 12:18:31,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:18:31,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-10-29 12:18:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:31,052 INFO L225 Difference]: With dead ends: 372 [2020-10-29 12:18:31,052 INFO L226 Difference]: Without dead ends: 281 [2020-10-29 12:18:31,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:18:31,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-29 12:18:31,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 244. [2020-10-29 12:18:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-29 12:18:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 364 transitions. [2020-10-29 12:18:31,105 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 364 transitions. Word has length 83 [2020-10-29 12:18:31,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:31,106 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 364 transitions. [2020-10-29 12:18:31,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:18:31,106 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 364 transitions. [2020-10-29 12:18:31,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 12:18:31,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:31,109 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] [2020-10-29 12:18:31,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:18:31,110 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:31,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:31,110 INFO L82 PathProgramCache]: Analyzing trace with hash 571482636, now seen corresponding path program 1 times [2020-10-29 12:18:31,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:31,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001601877] [2020-10-29 12:18:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:31,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:18:36,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:18:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:18:36,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:18:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:18:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:18:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,485 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:18:36,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:36,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:36,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:18:36,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:18:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:18:36,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:36,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 12:18:36,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:18:36,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:36,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:18:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:18:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:18:36,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:36,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:18:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 12:18:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:36,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:36,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:18:36,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:18:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:18:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:36,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:36,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:36,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:18:36,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:18:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 12:18:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:18:36,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:36,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:18:36,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:18:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:18:36,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:18:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:36,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:36,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:36,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:36,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:36,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:36,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:36,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:18:36,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001601877] [2020-10-29 12:18:36,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:18:36,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:18:36,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026355295] [2020-10-29 12:18:36,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:18:36,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:36,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:18:36,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:18:36,834 INFO L87 Difference]: Start difference. First operand 244 states and 364 transitions. Second operand 9 states. [2020-10-29 12:18:37,159 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:18:37,482 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:18:37,828 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:18:38,141 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:18:39,070 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:18:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:41,600 INFO L93 Difference]: Finished difference Result 754 states and 1132 transitions. [2020-10-29 12:18:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:18:41,602 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-29 12:18:41,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:41,606 INFO L225 Difference]: With dead ends: 754 [2020-10-29 12:18:41,606 INFO L226 Difference]: Without dead ends: 536 [2020-10-29 12:18:41,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:18:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-10-29 12:18:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 482. [2020-10-29 12:18:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-10-29 12:18:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 713 transitions. [2020-10-29 12:18:41,697 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 713 transitions. Word has length 85 [2020-10-29 12:18:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:41,697 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 713 transitions. [2020-10-29 12:18:41,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:18:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 713 transitions. [2020-10-29 12:18:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 12:18:41,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:41,701 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] [2020-10-29 12:18:41,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:18:41,702 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:41,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:41,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1606977311, now seen corresponding path program 1 times [2020-10-29 12:18:41,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:41,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978228688] [2020-10-29 12:18:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:41,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:46,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:46,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:18:46,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:18:46,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:18:46,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:46,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:18:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:18:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:18:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:47,047 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:18:47,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:47,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:47,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:47,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:47,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:47,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:18:47,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:47,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:47,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:47,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:18:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:47,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:47,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:47,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:47,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 12:18:47,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:47,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 12:18:47,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:47,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:47,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:18:47,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:47,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:18:47,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:18:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:47,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:47,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:47,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:18:47,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:47,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:18:47,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:47,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:18:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:47,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:18:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:47,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:47,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:47,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:47,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:18:47,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:47,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:18:47,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:18:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:47,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:47,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:47,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:47,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:18:47,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:47,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:18:47,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:18:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:47,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:47,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:18:47,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:47,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:18:47,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:47,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:18:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:18:47,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:18:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:47,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:47,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:47,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:47,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:47,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:47,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:47,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:47,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:18:47,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978228688] [2020-10-29 12:18:47,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:18:47,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:18:47,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476735138] [2020-10-29 12:18:47,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:18:47,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:47,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:18:47,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:18:47,431 INFO L87 Difference]: Start difference. First operand 482 states and 713 transitions. Second operand 9 states. [2020-10-29 12:18:47,750 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:18:48,114 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:18:48,580 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:18:49,193 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:18:50,102 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:18:53,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:53,249 INFO L93 Difference]: Finished difference Result 1820 states and 2691 transitions. [2020-10-29 12:18:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:18:53,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-29 12:18:53,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:53,261 INFO L225 Difference]: With dead ends: 1820 [2020-10-29 12:18:53,262 INFO L226 Difference]: Without dead ends: 1395 [2020-10-29 12:18:53,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:18:53,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2020-10-29 12:18:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1266. [2020-10-29 12:18:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-10-29 12:18:53,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1859 transitions. [2020-10-29 12:18:53,388 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1859 transitions. Word has length 86 [2020-10-29 12:18:53,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:53,389 INFO L481 AbstractCegarLoop]: Abstraction has 1266 states and 1859 transitions. [2020-10-29 12:18:53,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:18:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1859 transitions. [2020-10-29 12:18:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 12:18:53,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:53,393 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] [2020-10-29 12:18:53,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:18:53,394 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:53,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:53,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1822162024, now seen corresponding path program 1 times [2020-10-29 12:18:53,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:53,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136548119] [2020-10-29 12:18:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:53,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:53,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:55,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:55,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 12:18:55,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:18:55,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2256 [2020-10-29 12:18:55,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:55,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:18:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 12:18:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:18:55,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,032 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:18:56,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:56,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:18:56,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:56,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:18:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:18:56,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:18:56,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:18:56,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:18:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:18:56,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:56,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:18:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:18:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:56,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:18:56,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:18:56,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:18:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:56,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:18:56,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:18:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:18:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:18:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 12:18:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:18:56,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:18:56,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 12:18:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:56,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:18:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:56,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:56,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:56,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:56,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:18:56,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136548119] [2020-10-29 12:18:56,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:18:56,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:18:56,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671461219] [2020-10-29 12:18:56,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:18:56,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:56,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:18:56,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:18:56,295 INFO L87 Difference]: Start difference. First operand 1266 states and 1859 transitions. Second operand 9 states. [2020-10-29 12:18:56,606 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:18:59,300 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:18:59,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:59,783 INFO L93 Difference]: Finished difference Result 3331 states and 5005 transitions. [2020-10-29 12:18:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:18:59,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-29 12:18:59,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:59,806 INFO L225 Difference]: With dead ends: 3331 [2020-10-29 12:18:59,806 INFO L226 Difference]: Without dead ends: 2432 [2020-10-29 12:18:59,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:18:59,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2020-10-29 12:19:00,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2165. [2020-10-29 12:19:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2165 states. [2020-10-29 12:19:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 3227 transitions. [2020-10-29 12:19:00,029 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 3227 transitions. Word has length 87 [2020-10-29 12:19:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:00,030 INFO L481 AbstractCegarLoop]: Abstraction has 2165 states and 3227 transitions. [2020-10-29 12:19:00,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:19:00,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 3227 transitions. [2020-10-29 12:19:00,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 12:19:00,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:00,035 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] [2020-10-29 12:19:00,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:19:00,036 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:00,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:00,036 INFO L82 PathProgramCache]: Analyzing trace with hash 670288553, now seen corresponding path program 1 times [2020-10-29 12:19:00,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:00,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058689082] [2020-10-29 12:19:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 12:19:04,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4156 [2020-10-29 12:19:04,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:19:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:19:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:04,566 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:04,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:04,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:19:04,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:04,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:04,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:19:04,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 12:19:04,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:19:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:04,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:19:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:19:04,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:04,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:19:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:04,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:19:04,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:04,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:19:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:04,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:19:04,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:19:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:19:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:19:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:04,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:19:04,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 12:19:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:19:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:04,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:04,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:04,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:05,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058689082] [2020-10-29 12:19:05,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:05,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:19:05,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799121392] [2020-10-29 12:19:05,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:19:05,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:05,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:19:05,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:05,043 INFO L87 Difference]: Start difference. First operand 2165 states and 3227 transitions. Second operand 9 states. [2020-10-29 12:19:05,356 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:05,674 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:19:06,098 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:19:06,741 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-29 12:19:07,754 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:10,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:10,980 INFO L93 Difference]: Finished difference Result 7350 states and 11053 transitions. [2020-10-29 12:19:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:19:10,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 12:19:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:11,012 INFO L225 Difference]: With dead ends: 7350 [2020-10-29 12:19:11,012 INFO L226 Difference]: Without dead ends: 5229 [2020-10-29 12:19:11,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:19:11,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5229 states. [2020-10-29 12:19:11,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5229 to 4821. [2020-10-29 12:19:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4821 states. [2020-10-29 12:19:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 7097 transitions. [2020-10-29 12:19:11,423 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 7097 transitions. Word has length 89 [2020-10-29 12:19:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:11,423 INFO L481 AbstractCegarLoop]: Abstraction has 4821 states and 7097 transitions. [2020-10-29 12:19:11,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:19:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 7097 transitions. [2020-10-29 12:19:11,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 12:19:11,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:11,432 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] [2020-10-29 12:19:11,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:19:11,432 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:11,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:11,433 INFO L82 PathProgramCache]: Analyzing trace with hash 291020070, now seen corresponding path program 1 times [2020-10-29 12:19:11,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:11,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191036479] [2020-10-29 12:19:11,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:11,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:11,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:11,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:12,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 12:19:14,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2612 [2020-10-29 12:19:14,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:19:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:19:14,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,354 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:14,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:14,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:14,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:19:14,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:14,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 12:19:14,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 12:19:14,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:14,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:19:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:19:14,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:14,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:14,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:19:14,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:19:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:14,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:14,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:19:14,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:14,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:19:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:14,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:14,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:19:14,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:19:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:19:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 12:19:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:14,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:14,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:14,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:19:14,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:14,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 12:19:14,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:14,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 12:19:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:14,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:14,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:14,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:14,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:14,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191036479] [2020-10-29 12:19:14,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:14,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:19:14,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195622259] [2020-10-29 12:19:14,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:19:14,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:14,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:19:14,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:14,738 INFO L87 Difference]: Start difference. First operand 4821 states and 7097 transitions. Second operand 9 states. [2020-10-29 12:19:15,095 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:15,425 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:19:15,887 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:19:16,787 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:19:17,486 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:20,823 INFO L93 Difference]: Finished difference Result 15855 states and 23713 transitions. [2020-10-29 12:19:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:19:20,824 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-29 12:19:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:20,894 INFO L225 Difference]: With dead ends: 15855 [2020-10-29 12:19:20,894 INFO L226 Difference]: Without dead ends: 11667 [2020-10-29 12:19:20,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:19:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11667 states. [2020-10-29 12:19:21,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11667 to 10862. [2020-10-29 12:19:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10862 states. [2020-10-29 12:19:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10862 states to 10862 states and 15889 transitions. [2020-10-29 12:19:21,951 INFO L78 Accepts]: Start accepts. Automaton has 10862 states and 15889 transitions. Word has length 90 [2020-10-29 12:19:21,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:21,952 INFO L481 AbstractCegarLoop]: Abstraction has 10862 states and 15889 transitions. [2020-10-29 12:19:21,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:19:21,952 INFO L276 IsEmpty]: Start isEmpty. Operand 10862 states and 15889 transitions. [2020-10-29 12:19:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:19:21,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:21,969 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] [2020-10-29 12:19:21,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:19:21,969 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:21,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1516591160, now seen corresponding path program 1 times [2020-10-29 12:19:21,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:21,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541590235] [2020-10-29 12:19:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:22,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:22,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:19:27,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:27,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:19:27,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:19:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:19:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:27,299 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:27,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:27,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:19:27,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:27,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:19:27,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:19:27,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 12:19:27,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:27,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:19:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:19:27,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:27,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:19:27,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:27,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:27,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:19:27,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:27,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:27,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:19:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:19:27,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:19:27,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:19:27,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:27,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:27,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:19:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:27,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:19:27,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 12:19:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:27,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:19:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:27,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:27,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:27,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541590235] [2020-10-29 12:19:27,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:27,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:19:27,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503199614] [2020-10-29 12:19:27,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:19:27,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:27,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:19:27,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:27,590 INFO L87 Difference]: Start difference. First operand 10862 states and 15889 transitions. Second operand 9 states. [2020-10-29 12:19:27,933 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:28,246 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:19:28,563 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:19:28,948 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:29,868 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:33,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:33,462 INFO L93 Difference]: Finished difference Result 31838 states and 46887 transitions. [2020-10-29 12:19:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:19:33,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-29 12:19:33,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:33,575 INFO L225 Difference]: With dead ends: 31838 [2020-10-29 12:19:33,575 INFO L226 Difference]: Without dead ends: 21036 [2020-10-29 12:19:33,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:19:33,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21036 states. [2020-10-29 12:19:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21036 to 20408. [2020-10-29 12:19:35,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20408 states. [2020-10-29 12:19:35,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20408 states to 20408 states and 29340 transitions. [2020-10-29 12:19:35,521 INFO L78 Accepts]: Start accepts. Automaton has 20408 states and 29340 transitions. Word has length 91 [2020-10-29 12:19:35,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:35,521 INFO L481 AbstractCegarLoop]: Abstraction has 20408 states and 29340 transitions. [2020-10-29 12:19:35,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:19:35,521 INFO L276 IsEmpty]: Start isEmpty. Operand 20408 states and 29340 transitions. [2020-10-29 12:19:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:19:35,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:35,555 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] [2020-10-29 12:19:35,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:19:35,555 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:35,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:35,555 INFO L82 PathProgramCache]: Analyzing trace with hash -777554635, now seen corresponding path program 1 times [2020-10-29 12:19:35,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:35,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592827855] [2020-10-29 12:19:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:35,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:36,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:19:36,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:36,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 856 [2020-10-29 12:19:36,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:36,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:36,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:19:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 12:19:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:19:36,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:36,730 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:36,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:36,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:36,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:36,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:19:36,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:36,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:36,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:36,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:36,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:36,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:19:36,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:36,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 12:19:36,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:36,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:19:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:36,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 12:19:36,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:36,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 12:19:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:36,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:19:36,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:19:36,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:36,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:19:36,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:36,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:19:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:36,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:36,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:36,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:19:36,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:36,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:36,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:19:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:19:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:19:36,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:36,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:19:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:36,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:36,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:36,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:36,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:19:36,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:36,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:19:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:19:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:19:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:36,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:19:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:37,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:37,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:37,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:37,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:19:37,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:37,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:37,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:19:37,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:19:37,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:19:37,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:37,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:19:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:37,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:37,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:37,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:19:37,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:37,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:19:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:19:37,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:37,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592827855] [2020-10-29 12:19:37,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:37,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 12:19:37,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121484606] [2020-10-29 12:19:37,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:19:37,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:37,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:19:37,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:19:37,092 INFO L87 Difference]: Start difference. First operand 20408 states and 29340 transitions. Second operand 13 states. [2020-10-29 12:19:37,458 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:38,206 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:19:38,521 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:41,242 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:19:41,570 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:19:42,235 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:19:42,701 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:43,693 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:19:52,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:52,973 INFO L93 Difference]: Finished difference Result 128819 states and 189222 transitions. [2020-10-29 12:19:52,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 12:19:52,974 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-10-29 12:19:52,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:53,799 INFO L225 Difference]: With dead ends: 128819 [2020-10-29 12:19:53,799 INFO L226 Difference]: Without dead ends: 111825 [2020-10-29 12:19:53,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=724, Invalid=2816, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 12:19:54,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111825 states. [2020-10-29 12:20:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111825 to 107441. [2020-10-29 12:20:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107441 states. [2020-10-29 12:20:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107441 states to 107441 states and 157349 transitions. [2020-10-29 12:20:01,298 INFO L78 Accepts]: Start accepts. Automaton has 107441 states and 157349 transitions. Word has length 91 [2020-10-29 12:20:01,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:01,299 INFO L481 AbstractCegarLoop]: Abstraction has 107441 states and 157349 transitions. [2020-10-29 12:20:01,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:20:01,299 INFO L276 IsEmpty]: Start isEmpty. Operand 107441 states and 157349 transitions. [2020-10-29 12:20:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 12:20:01,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:01,404 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] [2020-10-29 12:20:01,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:20:01,405 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:01,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:01,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1889173507, now seen corresponding path program 1 times [2020-10-29 12:20:01,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:01,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035941182] [2020-10-29 12:20:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:01,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:20:03,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:20:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1735 [2020-10-29 12:20:03,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:20:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 12:20:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 12:20:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:03,504 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:03,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:03,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:03,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:03,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:20:03,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:03,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:20:03,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:03,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:20:03,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:20:03,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:03,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 12:20:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:03,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:20:03,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:03,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:03,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:03,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:20:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:03,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:03,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:03,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:20:03,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:20:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:20:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:03,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:20:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:03,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:20:03,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:03,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:20:03,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:20:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:20:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:03,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:20:03,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:03,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:20:03,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:20:03,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:03,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:20:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:20:03,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:03,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:03,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:20:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:20:03,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:03,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035941182] [2020-10-29 12:20:03,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:03,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:20:03,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161787110] [2020-10-29 12:20:03,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:20:03,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:03,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:20:03,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:20:03,865 INFO L87 Difference]: Start difference. First operand 107441 states and 157349 transitions. Second operand 10 states. [2020-10-29 12:20:04,175 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:20:04,763 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:20:07,705 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:20:08,068 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:20:22,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:22,032 INFO L93 Difference]: Finished difference Result 339500 states and 491353 transitions. [2020-10-29 12:20:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 12:20:22,033 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-29 12:20:22,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:23,440 INFO L225 Difference]: With dead ends: 339500 [2020-10-29 12:20:23,441 INFO L226 Difference]: Without dead ends: 235825 [2020-10-29 12:20:23,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:20:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235825 states. [2020-10-29 12:20:36,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235825 to 225137. [2020-10-29 12:20:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225137 states. [2020-10-29 12:20:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225137 states to 225137 states and 324390 transitions. [2020-10-29 12:20:37,518 INFO L78 Accepts]: Start accepts. Automaton has 225137 states and 324390 transitions. Word has length 92 [2020-10-29 12:20:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:37,519 INFO L481 AbstractCegarLoop]: Abstraction has 225137 states and 324390 transitions. [2020-10-29 12:20:37,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:20:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 225137 states and 324390 transitions. [2020-10-29 12:20:37,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 12:20:37,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:37,582 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] [2020-10-29 12:20:37,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:20:37,583 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:37,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:37,583 INFO L82 PathProgramCache]: Analyzing trace with hash 877278327, now seen corresponding path program 1 times [2020-10-29 12:20:37,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:37,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053765645] [2020-10-29 12:20:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:37,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:42,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:20:42,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:20:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:20:42,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:42,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:20:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:42,902 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:42,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:42,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:42,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:42,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:42,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:42,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:20:42,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:42,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:20:42,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:42,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:42,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:42,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:20:42,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:42,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:20:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:42,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:20:42,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:42,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:42,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:42,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:42,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:43,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:43,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:43,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:43,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:43,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:20:43,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:43,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:43,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:43,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:20:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:43,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:43,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:43,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:20:43,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:20:43,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:20:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:43,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:43,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:43,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:20:43,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:20:43,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:43,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:20:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:20:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:43,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 12:20:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:43,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:43,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:43,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:20:43,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:43,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:43,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053765645] [2020-10-29 12:20:43,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:43,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:43,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270440757] [2020-10-29 12:20:43,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:43,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:43,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:43,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:43,140 INFO L87 Difference]: Start difference. First operand 225137 states and 324390 transitions. Second operand 9 states. [2020-10-29 12:20:43,515 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:43,830 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:20:44,161 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:44,477 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:20:45,347 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:09,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:09,146 INFO L93 Difference]: Finished difference Result 665415 states and 971951 transitions. [2020-10-29 12:21:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:21:09,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-29 12:21:09,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:11,579 INFO L225 Difference]: With dead ends: 665415 [2020-10-29 12:21:11,580 INFO L226 Difference]: Without dead ends: 441150 [2020-10-29 12:21:11,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:21:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441150 states.