/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:11:45,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:11:45,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:11:45,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:11:45,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:11:45,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:11:45,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:11:45,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:11:45,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:11:45,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:11:45,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:11:45,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:11:45,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:11:45,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:11:45,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:11:45,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:11:45,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:11:45,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:11:45,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:11:45,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:11:45,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:11:45,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:11:45,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:11:45,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:11:45,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:11:45,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:11:45,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:11:45,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:11:45,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:11:45,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:11:45,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:11:45,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:11:45,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:11:45,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:11:45,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:11:45,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:11:45,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:11:45,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:11:45,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:11:45,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:11:45,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:11:45,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:11:45,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:11:45,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:11:45,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:11:45,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:11:45,478 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:11:45,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:11:45,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:11:45,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:11:45,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:11:45,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:11:45,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:11:45,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:11:45,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:11:45,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:11:45,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:11:45,480 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:11:45,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:11:45,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:11:45,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:11:45,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:11:45,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:11:45,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:11:45,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:11:45,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:11:45,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:11:45,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:11:45,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:11:45,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:11:45,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:11:45,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:11:45,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:11:45,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:11:45,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:11:45,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:11:45,902 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:11:45,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 18:11:46,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df8e8b1af/3df82da44011410593155bf4609ee9ff/FLAGdefb2640b [2020-10-28 18:11:46,835 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:11:46,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 18:11:46,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df8e8b1af/3df82da44011410593155bf4609ee9ff/FLAGdefb2640b [2020-10-28 18:11:47,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df8e8b1af/3df82da44011410593155bf4609ee9ff [2020-10-28 18:11:47,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:11:47,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:11:47,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:11:47,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:11:47,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:11:47,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:11:47" (1/1) ... [2020-10-28 18:11:47,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c25f213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:47, skipping insertion in model container [2020-10-28 18:11:47,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:11:47" (1/1) ... [2020-10-28 18:11:47,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:11:47,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:11:47,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:11:47,871 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:11:48,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:11:48,222 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:11:48,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:48 WrapperNode [2020-10-28 18:11:48,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:11:48,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:11:48,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:11:48,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:11:48,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:48" (1/1) ... [2020-10-28 18:11:48,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:48" (1/1) ... [2020-10-28 18:11:48,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:48" (1/1) ... [2020-10-28 18:11:48,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:48" (1/1) ... [2020-10-28 18:11:48,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:48" (1/1) ... [2020-10-28 18:11:48,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:48" (1/1) ... [2020-10-28 18:11:48,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:48" (1/1) ... [2020-10-28 18:11:48,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:11:48,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:11:48,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:11:48,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:11:48,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:11:48,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:11:48,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:11:48,456 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:11:48,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:11:48,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:11:48,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:11:48,456 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:11:48,456 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:11:48,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:11:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:11:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:11:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:11:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:11:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:11:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:11:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:11:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:11:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:11:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:11:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:11:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:11:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:11:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:11:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:11:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:11:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:11:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:11:50,546 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:11:50,546 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:11:50,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:11:50 BoogieIcfgContainer [2020-10-28 18:11:50,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:11:50,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:11:50,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:11:50,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:11:50,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:11:47" (1/3) ... [2020-10-28 18:11:50,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21528a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:11:50, skipping insertion in model container [2020-10-28 18:11:50,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:48" (2/3) ... [2020-10-28 18:11:50,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21528a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:11:50, skipping insertion in model container [2020-10-28 18:11:50,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:11:50" (3/3) ... [2020-10-28 18:11:50,558 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 18:11:50,571 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:11:50,577 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:11:50,591 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:11:50,622 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:11:50,622 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:11:50,622 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:11:50,623 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:11:50,623 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:11:50,623 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:11:50,623 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:11:50,623 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:11:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states. [2020-10-28 18:11:50,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 18:11:50,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:50,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:50,669 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:50,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:50,676 INFO L82 PathProgramCache]: Analyzing trace with hash -419763238, now seen corresponding path program 1 times [2020-10-28 18:11:50,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:50,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853377090] [2020-10-28 18:11:50,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:51,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:52,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:52,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:52,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:52,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:53,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:54,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:54,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:56,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:56,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 18:11:56,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:11:56,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 18:11:56,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:56,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:56,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:11:56,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 18:11:56,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 18:11:56,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:11:57,191 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:11:57,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:57,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:57,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:57,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:57,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:11:57,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:57,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:11:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:11:57,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:11:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:57,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853377090] [2020-10-28 18:11:57,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:57,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:11:57,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069702848] [2020-10-28 18:11:57,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:11:57,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:57,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:11:57,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:11:57,353 INFO L87 Difference]: Start difference. First operand 375 states. Second operand 4 states. [2020-10-28 18:11:58,257 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:12:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:02,040 INFO L93 Difference]: Finished difference Result 673 states and 1202 transitions. [2020-10-28 18:12:02,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:12:02,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-10-28 18:12:02,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:02,066 INFO L225 Difference]: With dead ends: 673 [2020-10-28 18:12:02,066 INFO L226 Difference]: Without dead ends: 526 [2020-10-28 18:12:02,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:02,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-10-28 18:12:02,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 523. [2020-10-28 18:12:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-10-28 18:12:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 769 transitions. [2020-10-28 18:12:02,189 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 769 transitions. Word has length 141 [2020-10-28 18:12:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:02,193 INFO L481 AbstractCegarLoop]: Abstraction has 523 states and 769 transitions. [2020-10-28 18:12:02,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:12:02,193 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 769 transitions. [2020-10-28 18:12:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 18:12:02,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:02,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:12:02,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:12:02,211 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:02,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:02,217 INFO L82 PathProgramCache]: Analyzing trace with hash 37568670, now seen corresponding path program 1 times [2020-10-28 18:12:02,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:02,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442281706] [2020-10-28 18:12:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:02,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:02,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:02,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:02,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:02,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:03,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:03,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:03,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:06,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:07,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:07,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 18:12:07,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:12:07,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:12:07,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:07,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:12:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:12:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 18:12:07,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:12:08,369 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:12:08,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:08,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:08,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:08,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:08,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:12:08,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:08,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:08,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:12:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:08,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442281706] [2020-10-28 18:12:08,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:08,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:08,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459660272] [2020-10-28 18:12:08,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:12:08,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:08,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:12:08,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:08,511 INFO L87 Difference]: Start difference. First operand 523 states and 769 transitions. Second operand 5 states. [2020-10-28 18:12:12,031 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:12:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:13,663 INFO L93 Difference]: Finished difference Result 1508 states and 2210 transitions. [2020-10-28 18:12:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:12:13,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-28 18:12:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:13,671 INFO L225 Difference]: With dead ends: 1508 [2020-10-28 18:12:13,671 INFO L226 Difference]: Without dead ends: 1002 [2020-10-28 18:12:13,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:12:13,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-10-28 18:12:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 985. [2020-10-28 18:12:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-10-28 18:12:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1435 transitions. [2020-10-28 18:12:13,765 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1435 transitions. Word has length 141 [2020-10-28 18:12:13,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:13,765 INFO L481 AbstractCegarLoop]: Abstraction has 985 states and 1435 transitions. [2020-10-28 18:12:13,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:12:13,766 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1435 transitions. [2020-10-28 18:12:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 18:12:13,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:13,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:12:13,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:12:13,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:13,776 INFO L82 PathProgramCache]: Analyzing trace with hash 514297576, now seen corresponding path program 1 times [2020-10-28 18:12:13,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:13,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691772516] [2020-10-28 18:12:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:13,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:14,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:14,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:14,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:14,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:14,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:18,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:18,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 18:12:18,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:12:18,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:12:18,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:18,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:12:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:12:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 18:12:18,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:19,678 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:12:19,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:19,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:19,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:19,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:19,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:19,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:12:19,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:19,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:19,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:12:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:19,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691772516] [2020-10-28 18:12:19,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:19,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:19,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420139874] [2020-10-28 18:12:19,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:12:19,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:19,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:12:19,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:19,778 INFO L87 Difference]: Start difference. First operand 985 states and 1435 transitions. Second operand 5 states. [2020-10-28 18:12:23,347 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:12:24,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:24,900 INFO L93 Difference]: Finished difference Result 2890 states and 4202 transitions. [2020-10-28 18:12:24,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:12:24,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-28 18:12:24,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:24,923 INFO L225 Difference]: With dead ends: 2890 [2020-10-28 18:12:24,923 INFO L226 Difference]: Without dead ends: 1916 [2020-10-28 18:12:24,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:12:24,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2020-10-28 18:12:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1896. [2020-10-28 18:12:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2020-10-28 18:12:25,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2736 transitions. [2020-10-28 18:12:25,057 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2736 transitions. Word has length 142 [2020-10-28 18:12:25,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:25,057 INFO L481 AbstractCegarLoop]: Abstraction has 1896 states and 2736 transitions. [2020-10-28 18:12:25,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:12:25,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2736 transitions. [2020-10-28 18:12:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 18:12:25,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:25,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:12:25,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:12:25,063 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:25,064 INFO L82 PathProgramCache]: Analyzing trace with hash 315189020, now seen corresponding path program 1 times [2020-10-28 18:12:25,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:25,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608757719] [2020-10-28 18:12:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:25,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:25,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:25,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:25,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:25,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:27,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:28,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:28,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:30,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:30,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 18:12:30,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:12:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:12:30,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:30,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:12:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:12:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 18:12:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:12:31,033 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:12:31,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:31,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:31,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:31,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:31,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:31,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:12:31,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:31,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:31,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:31,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608757719] [2020-10-28 18:12:31,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:31,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:31,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123592222] [2020-10-28 18:12:31,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:12:31,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:31,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:12:31,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:31,135 INFO L87 Difference]: Start difference. First operand 1896 states and 2736 transitions. Second operand 5 states. [2020-10-28 18:12:34,692 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:12:36,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:36,292 INFO L93 Difference]: Finished difference Result 5474 states and 7861 transitions. [2020-10-28 18:12:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:12:36,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-28 18:12:36,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:36,311 INFO L225 Difference]: With dead ends: 5474 [2020-10-28 18:12:36,312 INFO L226 Difference]: Without dead ends: 3636 [2020-10-28 18:12:36,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:12:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2020-10-28 18:12:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3598. [2020-10-28 18:12:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3598 states. [2020-10-28 18:12:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5113 transitions. [2020-10-28 18:12:36,516 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5113 transitions. Word has length 143 [2020-10-28 18:12:36,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:36,517 INFO L481 AbstractCegarLoop]: Abstraction has 3598 states and 5113 transitions. [2020-10-28 18:12:36,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:12:36,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5113 transitions. [2020-10-28 18:12:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 18:12:36,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:36,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:12:36,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:12:36,524 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:36,525 INFO L82 PathProgramCache]: Analyzing trace with hash 796795944, now seen corresponding path program 1 times [2020-10-28 18:12:36,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:36,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102568890] [2020-10-28 18:12:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:36,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:36,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:36,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:37,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:38,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:38,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:40,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:41,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:41,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 18:12:41,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:12:41,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:12:41,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:41,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:12:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:12:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 18:12:41,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:42,601 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:12:42,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:42,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:42,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:42,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:42,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:42,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:12:42,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:42,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:42,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:42,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102568890] [2020-10-28 18:12:42,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:42,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:42,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360577405] [2020-10-28 18:12:42,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:12:42,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:42,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:12:42,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:42,707 INFO L87 Difference]: Start difference. First operand 3598 states and 5113 transitions. Second operand 5 states. [2020-10-28 18:12:46,698 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:12:48,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:48,530 INFO L93 Difference]: Finished difference Result 9965 states and 14211 transitions. [2020-10-28 18:12:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:12:48,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-28 18:12:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:48,566 INFO L225 Difference]: With dead ends: 9965 [2020-10-28 18:12:48,566 INFO L226 Difference]: Without dead ends: 6935 [2020-10-28 18:12:48,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:12:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2020-10-28 18:12:48,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 6897. [2020-10-28 18:12:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6897 states. [2020-10-28 18:12:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6897 states to 6897 states and 9687 transitions. [2020-10-28 18:12:49,050 INFO L78 Accepts]: Start accepts. Automaton has 6897 states and 9687 transitions. Word has length 144 [2020-10-28 18:12:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:49,050 INFO L481 AbstractCegarLoop]: Abstraction has 6897 states and 9687 transitions. [2020-10-28 18:12:49,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:12:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 6897 states and 9687 transitions. [2020-10-28 18:12:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 18:12:49,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:49,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:12:49,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:12:49,062 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:49,062 INFO L82 PathProgramCache]: Analyzing trace with hash 732592283, now seen corresponding path program 1 times [2020-10-28 18:12:49,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:49,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51465732] [2020-10-28 18:12:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:49,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:49,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:49,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:49,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:50,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:53,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:54,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:54,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 18:12:54,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:12:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:12:54,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:54,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:12:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:12:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 18:12:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:55,095 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:12:55,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:55,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:55,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:55,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:12:55,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:55,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:55,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:55,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:55,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51465732] [2020-10-28 18:12:55,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:55,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:55,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613818515] [2020-10-28 18:12:55,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:12:55,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:55,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:12:55,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:55,173 INFO L87 Difference]: Start difference. First operand 6897 states and 9687 transitions. Second operand 5 states. [2020-10-28 18:12:58,944 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:13:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:00,844 INFO L93 Difference]: Finished difference Result 19851 states and 27865 transitions. [2020-10-28 18:13:00,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:13:00,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-28 18:13:00,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:00,899 INFO L225 Difference]: With dead ends: 19851 [2020-10-28 18:13:00,899 INFO L226 Difference]: Without dead ends: 13338 [2020-10-28 18:13:00,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:13:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13338 states. [2020-10-28 18:13:01,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13338 to 13300. [2020-10-28 18:13:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13300 states. [2020-10-28 18:13:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13300 states to 13300 states and 18443 transitions. [2020-10-28 18:13:01,969 INFO L78 Accepts]: Start accepts. Automaton has 13300 states and 18443 transitions. Word has length 145 [2020-10-28 18:13:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:01,969 INFO L481 AbstractCegarLoop]: Abstraction has 13300 states and 18443 transitions. [2020-10-28 18:13:01,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 13300 states and 18443 transitions. [2020-10-28 18:13:01,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 18:13:01,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:01,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:13:01,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:13:01,995 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:01,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:01,995 INFO L82 PathProgramCache]: Analyzing trace with hash 610505448, now seen corresponding path program 1 times [2020-10-28 18:13:01,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:01,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598062824] [2020-10-28 18:13:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:02,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:02,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:02,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:02,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:07,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:07,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 18:13:07,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:13:07,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 18:13:07,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:07,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:13:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 18:13:07,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:08,050 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:08,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:08,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:08,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:13:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:08,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:08,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598062824] [2020-10-28 18:13:08,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:08,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:08,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67065731] [2020-10-28 18:13:08,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:08,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:08,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:08,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:08,133 INFO L87 Difference]: Start difference. First operand 13300 states and 18443 transitions. Second operand 5 states. [2020-10-28 18:13:12,403 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:13:13,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:13,976 INFO L93 Difference]: Finished difference Result 35473 states and 49157 transitions. [2020-10-28 18:13:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:13:13,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-28 18:13:13,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:14,034 INFO L225 Difference]: With dead ends: 35473 [2020-10-28 18:13:14,034 INFO L226 Difference]: Without dead ends: 23267 [2020-10-28 18:13:14,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:13:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23267 states. [2020-10-28 18:13:15,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23267 to 23229. [2020-10-28 18:13:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23229 states. [2020-10-28 18:13:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23229 states to 23229 states and 31605 transitions. [2020-10-28 18:13:15,837 INFO L78 Accepts]: Start accepts. Automaton has 23229 states and 31605 transitions. Word has length 146 [2020-10-28 18:13:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:15,837 INFO L481 AbstractCegarLoop]: Abstraction has 23229 states and 31605 transitions. [2020-10-28 18:13:15,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 23229 states and 31605 transitions. [2020-10-28 18:13:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 18:13:15,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:15,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:13:15,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:13:15,877 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:15,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:15,878 INFO L82 PathProgramCache]: Analyzing trace with hash -844440933, now seen corresponding path program 1 times [2020-10-28 18:13:15,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:15,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545406028] [2020-10-28 18:13:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:15,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:16,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:16,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:16,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:20,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:20,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 18:13:20,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:13:20,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:13:20,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:20,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:20,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:20,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:13:20,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 18:13:20,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:21,842 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:21,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:21,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:21,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:21,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:21,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:13:21,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:21,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:21,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:21,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:21,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545406028] [2020-10-28 18:13:21,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:21,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:21,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319606427] [2020-10-28 18:13:21,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:21,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:21,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:21,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:21,917 INFO L87 Difference]: Start difference. First operand 23229 states and 31605 transitions. Second operand 5 states. [2020-10-28 18:13:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:25,193 INFO L93 Difference]: Finished difference Result 39421 states and 53750 transitions. [2020-10-28 18:13:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:25,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-28 18:13:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:25,234 INFO L225 Difference]: With dead ends: 39421 [2020-10-28 18:13:25,235 INFO L226 Difference]: Without dead ends: 16599 [2020-10-28 18:13:25,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:13:25,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16599 states. [2020-10-28 18:13:26,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16599 to 16599. [2020-10-28 18:13:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16599 states. [2020-10-28 18:13:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16599 states to 16599 states and 22595 transitions. [2020-10-28 18:13:26,427 INFO L78 Accepts]: Start accepts. Automaton has 16599 states and 22595 transitions. Word has length 147 [2020-10-28 18:13:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:26,427 INFO L481 AbstractCegarLoop]: Abstraction has 16599 states and 22595 transitions. [2020-10-28 18:13:26,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 16599 states and 22595 transitions. [2020-10-28 18:13:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 18:13:26,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:26,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:13:26,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:13:26,447 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:26,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:26,447 INFO L82 PathProgramCache]: Analyzing trace with hash -280557245, now seen corresponding path program 1 times [2020-10-28 18:13:26,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:26,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996702042] [2020-10-28 18:13:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:26,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:26,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:26,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:31,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:31,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 18:13:31,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:13:31,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:13:31,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:31,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 18:13:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:13:31,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:32,382 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:32,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:32,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:32,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:32,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:32,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:13:32,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:32,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:32,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996702042] [2020-10-28 18:13:32,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:32,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:32,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453031609] [2020-10-28 18:13:32,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:32,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:32,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:32,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:32,446 INFO L87 Difference]: Start difference. First operand 16599 states and 22595 transitions. Second operand 5 states. [2020-10-28 18:13:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:35,367 INFO L93 Difference]: Finished difference Result 26914 states and 36660 transitions. [2020-10-28 18:13:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:35,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-28 18:13:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:35,394 INFO L225 Difference]: With dead ends: 26914 [2020-10-28 18:13:35,395 INFO L226 Difference]: Without dead ends: 10716 [2020-10-28 18:13:35,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:13:35,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2020-10-28 18:13:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 10715. [2020-10-28 18:13:36,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10715 states. [2020-10-28 18:13:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10715 states to 10715 states and 14521 transitions. [2020-10-28 18:13:36,305 INFO L78 Accepts]: Start accepts. Automaton has 10715 states and 14521 transitions. Word has length 151 [2020-10-28 18:13:36,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:36,305 INFO L481 AbstractCegarLoop]: Abstraction has 10715 states and 14521 transitions. [2020-10-28 18:13:36,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:36,305 INFO L276 IsEmpty]: Start isEmpty. Operand 10715 states and 14521 transitions. [2020-10-28 18:13:36,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 18:13:36,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:36,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:13:36,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:13:36,318 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:36,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:36,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1061989278, now seen corresponding path program 1 times [2020-10-28 18:13:36,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:36,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200249623] [2020-10-28 18:13:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:36,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:36,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:37,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:37,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:41,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:41,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 18:13:41,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:13:41,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:13:41,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:41,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:41,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 18:13:41,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 18:13:41,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:42,271 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:42,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:42,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:42,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:42,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:13:42,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:42,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:42,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:42,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:42,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:42,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:42,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200249623] [2020-10-28 18:13:42,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:42,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:42,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415604859] [2020-10-28 18:13:42,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:42,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:42,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:42,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:42,334 INFO L87 Difference]: Start difference. First operand 10715 states and 14521 transitions. Second operand 5 states. [2020-10-28 18:13:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:45,157 INFO L93 Difference]: Finished difference Result 15343 states and 20918 transitions. [2020-10-28 18:13:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:45,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-28 18:13:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:45,174 INFO L225 Difference]: With dead ends: 15343 [2020-10-28 18:13:45,175 INFO L226 Difference]: Without dead ends: 9108 [2020-10-28 18:13:45,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:13:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9108 states. [2020-10-28 18:13:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9108 to 9106. [2020-10-28 18:13:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9106 states. [2020-10-28 18:13:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9106 states to 9106 states and 12320 transitions. [2020-10-28 18:13:45,996 INFO L78 Accepts]: Start accepts. Automaton has 9106 states and 12320 transitions. Word has length 159 [2020-10-28 18:13:45,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:45,996 INFO L481 AbstractCegarLoop]: Abstraction has 9106 states and 12320 transitions. [2020-10-28 18:13:45,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:45,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9106 states and 12320 transitions. [2020-10-28 18:13:46,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 18:13:46,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:46,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:13:46,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:13:46,004 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:46,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:46,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1703454929, now seen corresponding path program 1 times [2020-10-28 18:13:46,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:46,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716050113] [2020-10-28 18:13:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:51,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:51,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 18:13:51,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:13:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:13:51,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:51,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 18:13:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 18:13:51,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:51,957 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:51,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:51,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:51,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:51,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:51,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:51,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:13:51,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:51,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:52,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716050113] [2020-10-28 18:13:52,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:52,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:52,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067164877] [2020-10-28 18:13:52,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:52,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:52,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:52,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:52,010 INFO L87 Difference]: Start difference. First operand 9106 states and 12320 transitions. Second operand 5 states. [2020-10-28 18:13:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:54,730 INFO L93 Difference]: Finished difference Result 15460 states and 20948 transitions. [2020-10-28 18:13:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:54,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-28 18:13:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:54,742 INFO L225 Difference]: With dead ends: 15460 [2020-10-28 18:13:54,743 INFO L226 Difference]: Without dead ends: 7888 [2020-10-28 18:13:54,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:13:54,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7888 states. [2020-10-28 18:13:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7888 to 7888. [2020-10-28 18:13:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7888 states. [2020-10-28 18:13:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 10649 transitions. [2020-10-28 18:13:55,354 INFO L78 Accepts]: Start accepts. Automaton has 7888 states and 10649 transitions. Word has length 163 [2020-10-28 18:13:55,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:55,354 INFO L481 AbstractCegarLoop]: Abstraction has 7888 states and 10649 transitions. [2020-10-28 18:13:55,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:55,354 INFO L276 IsEmpty]: Start isEmpty. Operand 7888 states and 10649 transitions. [2020-10-28 18:13:55,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 18:13:55,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:55,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:13:55,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:13:55,361 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:55,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:55,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1161471099, now seen corresponding path program 1 times [2020-10-28 18:13:55,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:55,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780319230] [2020-10-28 18:13:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:55,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:55,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:55,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:55,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:55,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:56,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:57,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:00,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:00,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 18:14:00,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:14:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 18:14:00,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:00,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 18:14:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:01,332 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:01,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:01,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:01,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:01,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:01,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:14:01,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:01,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:01,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780319230] [2020-10-28 18:14:01,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:01,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:01,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846359010] [2020-10-28 18:14:01,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:01,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:01,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:01,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:01,423 INFO L87 Difference]: Start difference. First operand 7888 states and 10649 transitions. Second operand 5 states. [2020-10-28 18:14:02,335 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:14:07,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:07,058 INFO L93 Difference]: Finished difference Result 13535 states and 18289 transitions. [2020-10-28 18:14:07,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:14:07,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-28 18:14:07,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:07,069 INFO L225 Difference]: With dead ends: 13535 [2020-10-28 18:14:07,069 INFO L226 Difference]: Without dead ends: 7918 [2020-10-28 18:14:07,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:14:07,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2020-10-28 18:14:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7888. [2020-10-28 18:14:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7888 states. [2020-10-28 18:14:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 10598 transitions. [2020-10-28 18:14:07,692 INFO L78 Accepts]: Start accepts. Automaton has 7888 states and 10598 transitions. Word has length 166 [2020-10-28 18:14:07,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:07,692 INFO L481 AbstractCegarLoop]: Abstraction has 7888 states and 10598 transitions. [2020-10-28 18:14:07,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:14:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 7888 states and 10598 transitions. [2020-10-28 18:14:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 18:14:07,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:07,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:14:07,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:14:07,700 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:07,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:07,700 INFO L82 PathProgramCache]: Analyzing trace with hash 589944164, now seen corresponding path program 1 times [2020-10-28 18:14:07,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:07,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991164287] [2020-10-28 18:14:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:07,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:07,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:07,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:07,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:12,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 18:14:12,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:14:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 18:14:12,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:12,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 18:14:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 18:14:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:13,639 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:13,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:13,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:13,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:13,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:14:13,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:13,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:13,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991164287] [2020-10-28 18:14:13,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:13,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:14:13,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580173008] [2020-10-28 18:14:13,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:14:13,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:13,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:14:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:14:13,699 INFO L87 Difference]: Start difference. First operand 7888 states and 10598 transitions. Second operand 4 states. [2020-10-28 18:14:14,637 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:14:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:19,211 INFO L93 Difference]: Finished difference Result 12959 states and 17473 transitions. [2020-10-28 18:14:19,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:14:19,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-28 18:14:19,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:19,226 INFO L225 Difference]: With dead ends: 12959 [2020-10-28 18:14:19,226 INFO L226 Difference]: Without dead ends: 8070 [2020-10-28 18:14:19,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:19,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8070 states. [2020-10-28 18:14:19,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8070 to 8053. [2020-10-28 18:14:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8053 states. [2020-10-28 18:14:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8053 states to 8053 states and 10726 transitions. [2020-10-28 18:14:19,897 INFO L78 Accepts]: Start accepts. Automaton has 8053 states and 10726 transitions. Word has length 167 [2020-10-28 18:14:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:19,898 INFO L481 AbstractCegarLoop]: Abstraction has 8053 states and 10726 transitions. [2020-10-28 18:14:19,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:14:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 8053 states and 10726 transitions. [2020-10-28 18:14:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 18:14:19,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:19,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:14:19,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:14:19,904 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:19,904 INFO L82 PathProgramCache]: Analyzing trace with hash 72701921, now seen corresponding path program 1 times [2020-10-28 18:14:19,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:19,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835253505] [2020-10-28 18:14:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:19,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:20,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:20,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:24,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 18:14:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:14:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:14:24,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:24,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 18:14:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 18:14:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:25,807 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:25,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:25,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:25,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:14:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:25,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:25,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835253505] [2020-10-28 18:14:25,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:25,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:14:25,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395914728] [2020-10-28 18:14:25,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:14:25,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:25,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:14:25,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:14:25,851 INFO L87 Difference]: Start difference. First operand 8053 states and 10726 transitions. Second operand 4 states. [2020-10-28 18:14:30,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:30,370 INFO L93 Difference]: Finished difference Result 14331 states and 19195 transitions. [2020-10-28 18:14:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 18:14:30,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-28 18:14:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:30,383 INFO L225 Difference]: With dead ends: 14331 [2020-10-28 18:14:30,384 INFO L226 Difference]: Without dead ends: 10216 [2020-10-28 18:14:30,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:14:30,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10216 states. [2020-10-28 18:14:31,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10216 to 8053. [2020-10-28 18:14:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8053 states. [2020-10-28 18:14:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8053 states to 8053 states and 10720 transitions. [2020-10-28 18:14:31,122 INFO L78 Accepts]: Start accepts. Automaton has 8053 states and 10720 transitions. Word has length 167 [2020-10-28 18:14:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:31,122 INFO L481 AbstractCegarLoop]: Abstraction has 8053 states and 10720 transitions. [2020-10-28 18:14:31,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:14:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 8053 states and 10720 transitions. [2020-10-28 18:14:31,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 18:14:31,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:31,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:14:31,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:14:31,128 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:31,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:31,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1041258757, now seen corresponding path program 1 times [2020-10-28 18:14:31,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:31,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896587223] [2020-10-28 18:14:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:31,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:33,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:33,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:36,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:36,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 18:14:36,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:14:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:14:36,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:36,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 18:14:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 18:14:36,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:37,054 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:37,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:37,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:37,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:37,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:37,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:14:37,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:37,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:37,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:37,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:37,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:37,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:37,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896587223] [2020-10-28 18:14:37,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:37,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:14:37,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919393966] [2020-10-28 18:14:37,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:14:37,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:37,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:14:37,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:14:37,118 INFO L87 Difference]: Start difference. First operand 8053 states and 10720 transitions. Second operand 4 states. [2020-10-28 18:14:40,486 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:14:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:42,523 INFO L93 Difference]: Finished difference Result 20059 states and 27356 transitions. [2020-10-28 18:14:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:14:42,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-28 18:14:42,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:42,540 INFO L225 Difference]: With dead ends: 20059 [2020-10-28 18:14:42,540 INFO L226 Difference]: Without dead ends: 14424 [2020-10-28 18:14:42,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14424 states. [2020-10-28 18:14:43,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14424 to 14310. [2020-10-28 18:14:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14310 states. [2020-10-28 18:14:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14310 states to 14310 states and 19197 transitions. [2020-10-28 18:14:43,363 INFO L78 Accepts]: Start accepts. Automaton has 14310 states and 19197 transitions. Word has length 168 [2020-10-28 18:14:43,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:43,363 INFO L481 AbstractCegarLoop]: Abstraction has 14310 states and 19197 transitions. [2020-10-28 18:14:43,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:14:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 14310 states and 19197 transitions. [2020-10-28 18:14:43,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 18:14:43,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:43,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:14:43,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:14:43,373 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:43,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:43,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1321594592, now seen corresponding path program 1 times [2020-10-28 18:14:43,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:43,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167432857] [2020-10-28 18:14:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:43,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:48,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:48,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 18:14:48,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:14:48,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:14:48,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:48,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:48,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:14:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:14:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 18:14:48,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:49,376 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:49,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:49,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:49,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:49,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:49,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:14:49,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:49,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:14:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:49,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167432857] [2020-10-28 18:14:49,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:49,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:49,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078825481] [2020-10-28 18:14:49,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:14:49,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:49,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:14:49,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:14:49,459 INFO L87 Difference]: Start difference. First operand 14310 states and 19197 transitions. Second operand 6 states. [2020-10-28 18:14:50,391 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 18:14:53,629 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:14:55,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:55,938 INFO L93 Difference]: Finished difference Result 25724 states and 35650 transitions. [2020-10-28 18:14:55,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:14:55,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-10-28 18:14:55,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:55,954 INFO L225 Difference]: With dead ends: 25724 [2020-10-28 18:14:55,954 INFO L226 Difference]: Without dead ends: 14377 [2020-10-28 18:14:55,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:14:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14377 states. [2020-10-28 18:14:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14377 to 14371. [2020-10-28 18:14:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14371 states. [2020-10-28 18:14:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14371 states to 14371 states and 19797 transitions. [2020-10-28 18:14:56,770 INFO L78 Accepts]: Start accepts. Automaton has 14371 states and 19797 transitions. Word has length 168 [2020-10-28 18:14:56,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:56,770 INFO L481 AbstractCegarLoop]: Abstraction has 14371 states and 19797 transitions. [2020-10-28 18:14:56,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:14:56,771 INFO L276 IsEmpty]: Start isEmpty. Operand 14371 states and 19797 transitions. [2020-10-28 18:14:56,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 18:14:56,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:56,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:14:56,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:14:56,778 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:56,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1918264640, now seen corresponding path program 1 times [2020-10-28 18:14:56,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:56,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954332335] [2020-10-28 18:14:56,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:56,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:56,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:56,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:57,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:57,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:57,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:01,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:01,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 18:15:01,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:15:01,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:15:01,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:01,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:15:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 18:15:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 18:15:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:02,777 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:15:02,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:02,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:02,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:02,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:02,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:15:02,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:02,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:02,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:02,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954332335] [2020-10-28 18:15:02,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:02,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:15:02,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191863178] [2020-10-28 18:15:02,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:15:02,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:02,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:15:02,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:15:02,925 INFO L87 Difference]: Start difference. First operand 14371 states and 19797 transitions. Second operand 6 states. [2020-10-28 18:15:03,846 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:15:07,179 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 18:15:09,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:09,585 INFO L93 Difference]: Finished difference Result 32979 states and 46985 transitions. [2020-10-28 18:15:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:15:09,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-10-28 18:15:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:09,613 INFO L225 Difference]: With dead ends: 32979 [2020-10-28 18:15:09,613 INFO L226 Difference]: Without dead ends: 23222 [2020-10-28 18:15:09,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:15:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23222 states. [2020-10-28 18:15:11,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23222 to 23219. [2020-10-28 18:15:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23219 states. [2020-10-28 18:15:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23219 states to 23219 states and 32275 transitions. [2020-10-28 18:15:11,138 INFO L78 Accepts]: Start accepts. Automaton has 23219 states and 32275 transitions. Word has length 168 [2020-10-28 18:15:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:11,138 INFO L481 AbstractCegarLoop]: Abstraction has 23219 states and 32275 transitions. [2020-10-28 18:15:11,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:15:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 23219 states and 32275 transitions. [2020-10-28 18:15:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 18:15:11,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:11,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:15:11,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:15:11,147 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:11,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:11,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1949191064, now seen corresponding path program 1 times [2020-10-28 18:15:11,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:11,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502000617] [2020-10-28 18:15:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:11,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:11,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:11,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:11,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:12,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:16,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:16,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 18:15:16,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:15:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:15:16,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:16,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:15:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:15:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 18:15:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:17,101 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:15:17,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:17,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:17,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:17,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:17,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:17,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:15:17,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:17,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:15:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:15:17,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:17,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502000617] [2020-10-28 18:15:17,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:17,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:17,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098567305] [2020-10-28 18:15:17,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:15:17,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:17,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:15:17,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:15:17,169 INFO L87 Difference]: Start difference. First operand 23219 states and 32275 transitions. Second operand 6 states. [2020-10-28 18:15:18,152 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 229