/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:55:59,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:55:59,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:55:59,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:55:59,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:55:59,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:55:59,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:55:59,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:55:59,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:55:59,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:55:59,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:55:59,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:55:59,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:55:59,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:55:59,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:55:59,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:55:59,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:55:59,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:55:59,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:55:59,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:55:59,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:55:59,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:55:59,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:55:59,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:55:59,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:55:59,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:55:59,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:55:59,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:55:59,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:55:59,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:55:59,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:55:59,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:55:59,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:55:59,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:55:59,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:55:59,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:55:59,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:55:59,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:55:59,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:55:59,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:55:59,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:55:59,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:55:59,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:55:59,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:55:59,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:55:59,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:55:59,281 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:55:59,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:55:59,282 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:55:59,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:55:59,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:55:59,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:55:59,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:55:59,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:55:59,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:55:59,284 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:55:59,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:55:59,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:55:59,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:55:59,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:55:59,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:55:59,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:55:59,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:55:59,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:55:59,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:55:59,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:55:59,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:55:59,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:55:59,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:55:59,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:55:59,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:55:59,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:55:59,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:55:59,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:55:59,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:55:59,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:55:59,765 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:55:59,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 12:55:59,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5783bbb7f/7122eec03cc74661beebb82146a70e41/FLAG427d5f186 [2020-10-29 12:56:00,641 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:56:00,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 12:56:00,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5783bbb7f/7122eec03cc74661beebb82146a70e41/FLAG427d5f186 [2020-10-29 12:56:00,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5783bbb7f/7122eec03cc74661beebb82146a70e41 [2020-10-29 12:56:00,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:56:00,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:56:00,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:56:00,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:56:00,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:56:00,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:56:00" (1/1) ... [2020-10-29 12:56:00,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4fb3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:56:00, skipping insertion in model container [2020-10-29 12:56:00,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:56:00" (1/1) ... [2020-10-29 12:56:00,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:56:01,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:56:01,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:56:01,728 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:56:01,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:56:02,013 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:56:02,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:56:02 WrapperNode [2020-10-29 12:56:02,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:56:02,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:56:02,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:56:02,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:56:02,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:56:02" (1/1) ... [2020-10-29 12:56:02,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:56:02" (1/1) ... [2020-10-29 12:56:02,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:56:02" (1/1) ... [2020-10-29 12:56:02,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:56:02" (1/1) ... [2020-10-29 12:56:02,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:56:02" (1/1) ... [2020-10-29 12:56:02,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:56:02" (1/1) ... [2020-10-29 12:56:02,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:56:02" (1/1) ... [2020-10-29 12:56:02,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:56:02,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:56:02,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:56:02,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:56:02,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:56:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:56:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:56:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:56:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:56:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:56:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:56:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:56:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:56:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:56:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:56:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:56:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 12:56:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:56:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:56:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:56:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:56:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:56:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:56:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:56:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:56:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:56:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:56:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:56:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:56:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:56:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:56:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:56:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:56:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:56:04,316 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:56:04,316 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:56:04,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:56:04 BoogieIcfgContainer [2020-10-29 12:56:04,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:56:04,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:56:04,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:56:04,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:56:04,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:56:00" (1/3) ... [2020-10-29 12:56:04,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a73ac60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:56:04, skipping insertion in model container [2020-10-29 12:56:04,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:56:02" (2/3) ... [2020-10-29 12:56:04,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a73ac60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:56:04, skipping insertion in model container [2020-10-29 12:56:04,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:56:04" (3/3) ... [2020-10-29 12:56:04,329 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 12:56:04,341 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:56:04,347 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:56:04,361 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:56:04,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:56:04,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:56:04,392 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:56:04,393 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:56:04,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:56:04,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:56:04,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:56:04,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:56:04,420 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2020-10-29 12:56:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 12:56:04,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:04,444 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] [2020-10-29 12:56:04,444 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:04,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:04,455 INFO L82 PathProgramCache]: Analyzing trace with hash -538195825, now seen corresponding path program 1 times [2020-10-29 12:56:04,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:04,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387580091] [2020-10-29 12:56:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:05,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:05,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:05,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:06,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:06,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:07,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:07,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:07,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:08,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:09,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 12:56:09,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:56:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 12:56:09,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:09,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:56:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 12:56:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 12:56:10,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 12:56:10,628 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:56:10,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:10,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:10,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:10,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 12:56:10,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:10,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:10,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387580091] [2020-10-29 12:56:10,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:10,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:56:10,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838711861] [2020-10-29 12:56:10,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:56:10,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:10,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:56:10,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:56:10,795 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 4 states. [2020-10-29 12:56:11,264 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 12:56:14,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:14,212 INFO L93 Difference]: Finished difference Result 706 states and 1250 transitions. [2020-10-29 12:56:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:56:14,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-29 12:56:14,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:14,264 INFO L225 Difference]: With dead ends: 706 [2020-10-29 12:56:14,265 INFO L226 Difference]: Without dead ends: 557 [2020-10-29 12:56:14,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-29 12:56:14,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 554. [2020-10-29 12:56:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-10-29 12:56:14,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 813 transitions. [2020-10-29 12:56:14,406 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 813 transitions. Word has length 146 [2020-10-29 12:56:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:14,407 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 813 transitions. [2020-10-29 12:56:14,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:56:14,408 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 813 transitions. [2020-10-29 12:56:14,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 12:56:14,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:14,414 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] [2020-10-29 12:56:14,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:56:14,414 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:14,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:14,415 INFO L82 PathProgramCache]: Analyzing trace with hash -84231047, now seen corresponding path program 1 times [2020-10-29 12:56:14,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:14,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859262188] [2020-10-29 12:56:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:14,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:14,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:14,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:14,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:15,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:15,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:19,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:19,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 12:56:19,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 12:56:19,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-29 12:56:19,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:19,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 12:56:19,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:20,186 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:56:20,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:20,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:20,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:20,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:20,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 12:56:20,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:20,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:20,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:20,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859262188] [2020-10-29 12:56:20,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:20,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:20,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003043392] [2020-10-29 12:56:20,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:20,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:20,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:20,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:20,321 INFO L87 Difference]: Start difference. First operand 554 states and 813 transitions. Second operand 5 states. [2020-10-29 12:56:23,506 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:56:24,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:24,959 INFO L93 Difference]: Finished difference Result 1604 states and 2348 transitions. [2020-10-29 12:56:24,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:24,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-29 12:56:24,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:24,975 INFO L225 Difference]: With dead ends: 1604 [2020-10-29 12:56:24,976 INFO L226 Difference]: Without dead ends: 1071 [2020-10-29 12:56:24,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2020-10-29 12:56:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1052. [2020-10-29 12:56:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-10-29 12:56:25,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1533 transitions. [2020-10-29 12:56:25,066 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1533 transitions. Word has length 146 [2020-10-29 12:56:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:25,067 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1533 transitions. [2020-10-29 12:56:25,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1533 transitions. [2020-10-29 12:56:25,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 12:56:25,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:25,071 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] [2020-10-29 12:56:25,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:56:25,072 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:25,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:25,073 INFO L82 PathProgramCache]: Analyzing trace with hash 7295825, now seen corresponding path program 1 times [2020-10-29 12:56:25,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:25,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895039252] [2020-10-29 12:56:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:28,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:28,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:30,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:30,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 12:56:30,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 12:56:30,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:56:30,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:30,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:56:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:30,590 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:56:30,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:30,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:30,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:30,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:30,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:30,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:56:30,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:30,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:30,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:30,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895039252] [2020-10-29 12:56:30,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:30,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:30,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807033363] [2020-10-29 12:56:30,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:30,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:30,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:30,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:30,697 INFO L87 Difference]: Start difference. First operand 1052 states and 1533 transitions. Second operand 5 states. [2020-10-29 12:56:33,488 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:56:34,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:34,794 INFO L93 Difference]: Finished difference Result 3031 states and 4395 transitions. [2020-10-29 12:56:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:34,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-29 12:56:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:34,816 INFO L225 Difference]: With dead ends: 3031 [2020-10-29 12:56:34,816 INFO L226 Difference]: Without dead ends: 2022 [2020-10-29 12:56:34,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2020-10-29 12:56:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1996. [2020-10-29 12:56:34,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1996 states. [2020-10-29 12:56:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 2877 transitions. [2020-10-29 12:56:34,995 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 2877 transitions. Word has length 147 [2020-10-29 12:56:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:34,996 INFO L481 AbstractCegarLoop]: Abstraction has 1996 states and 2877 transitions. [2020-10-29 12:56:34,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:34,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 2877 transitions. [2020-10-29 12:56:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 12:56:35,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:35,001 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] [2020-10-29 12:56:35,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:56:35,002 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:35,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:35,002 INFO L82 PathProgramCache]: Analyzing trace with hash 790473725, now seen corresponding path program 1 times [2020-10-29 12:56:35,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:35,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344270611] [2020-10-29 12:56:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:35,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:38,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:38,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:40,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:40,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 12:56:40,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:56:40,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 12:56:40,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:40,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:40,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:40,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 12:56:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:40,710 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:56:40,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:40,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:40,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:40,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:40,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:56:40,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:40,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:40,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344270611] [2020-10-29 12:56:40,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:40,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:40,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958466107] [2020-10-29 12:56:40,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:40,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:40,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:40,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:40,827 INFO L87 Difference]: Start difference. First operand 1996 states and 2877 transitions. Second operand 5 states. [2020-10-29 12:56:43,876 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:56:45,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:45,364 INFO L93 Difference]: Finished difference Result 5579 states and 8055 transitions. [2020-10-29 12:56:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:45,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-29 12:56:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:45,385 INFO L225 Difference]: With dead ends: 5579 [2020-10-29 12:56:45,385 INFO L226 Difference]: Without dead ends: 3859 [2020-10-29 12:56:45,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2020-10-29 12:56:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 3842. [2020-10-29 12:56:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3842 states. [2020-10-29 12:56:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3842 states to 3842 states and 5471 transitions. [2020-10-29 12:56:45,652 INFO L78 Accepts]: Start accepts. Automaton has 3842 states and 5471 transitions. Word has length 148 [2020-10-29 12:56:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:45,652 INFO L481 AbstractCegarLoop]: Abstraction has 3842 states and 5471 transitions. [2020-10-29 12:56:45,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3842 states and 5471 transitions. [2020-10-29 12:56:45,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 12:56:45,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:45,659 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] [2020-10-29 12:56:45,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:56:45,660 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:45,661 INFO L82 PathProgramCache]: Analyzing trace with hash -721235117, now seen corresponding path program 1 times [2020-10-29 12:56:45,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:45,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189864615] [2020-10-29 12:56:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:45,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:46,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:47,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:50,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:50,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:50,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 12:56:50,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:56:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:56:50,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:50,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 12:56:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 12:56:51,247 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:56:51,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:51,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:51,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:51,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:51,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:51,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:56:51,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:51,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:51,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:56:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:51,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189864615] [2020-10-29 12:56:51,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:51,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:51,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788096931] [2020-10-29 12:56:51,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:51,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:51,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:51,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:51,364 INFO L87 Difference]: Start difference. First operand 3842 states and 5471 transitions. Second operand 5 states. [2020-10-29 12:56:54,538 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:56:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:56,111 INFO L93 Difference]: Finished difference Result 10970 states and 15595 transitions. [2020-10-29 12:56:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:56,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-29 12:56:56,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:56,145 INFO L225 Difference]: With dead ends: 10970 [2020-10-29 12:56:56,146 INFO L226 Difference]: Without dead ends: 7420 [2020-10-29 12:56:56,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:56,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7420 states. [2020-10-29 12:56:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 7386. [2020-10-29 12:56:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7386 states. [2020-10-29 12:56:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7386 states to 7386 states and 10389 transitions. [2020-10-29 12:56:56,722 INFO L78 Accepts]: Start accepts. Automaton has 7386 states and 10389 transitions. Word has length 149 [2020-10-29 12:56:56,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:56,722 INFO L481 AbstractCegarLoop]: Abstraction has 7386 states and 10389 transitions. [2020-10-29 12:56:56,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7386 states and 10389 transitions. [2020-10-29 12:56:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 12:56:56,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:56,735 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] [2020-10-29 12:56:56,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:56:56,735 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:56,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:56,736 INFO L82 PathProgramCache]: Analyzing trace with hash -955644932, now seen corresponding path program 1 times [2020-10-29 12:56:56,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:56,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727473928] [2020-10-29 12:56:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:56,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:56,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:58,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:01,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:01,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 12:57:01,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:57:01,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 12:57:01,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:01,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:01,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:01,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 12:57:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:02,330 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:57:02,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:02,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:02,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:02,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:02,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:02,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:57:02,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:02,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:02,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:02,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:02,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727473928] [2020-10-29 12:57:02,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:02,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:02,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550093100] [2020-10-29 12:57:02,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:02,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:02,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:02,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:02,433 INFO L87 Difference]: Start difference. First operand 7386 states and 10389 transitions. Second operand 5 states. [2020-10-29 12:57:05,700 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:57:07,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:07,463 INFO L93 Difference]: Finished difference Result 19312 states and 27154 transitions. [2020-10-29 12:57:07,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:57:07,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-29 12:57:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:07,515 INFO L225 Difference]: With dead ends: 19312 [2020-10-29 12:57:07,516 INFO L226 Difference]: Without dead ends: 12998 [2020-10-29 12:57:07,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:57:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12998 states. [2020-10-29 12:57:08,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12998 to 12964. [2020-10-29 12:57:08,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12964 states. [2020-10-29 12:57:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12964 states to 12964 states and 17898 transitions. [2020-10-29 12:57:08,891 INFO L78 Accepts]: Start accepts. Automaton has 12964 states and 17898 transitions. Word has length 150 [2020-10-29 12:57:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:08,891 INFO L481 AbstractCegarLoop]: Abstraction has 12964 states and 17898 transitions. [2020-10-29 12:57:08,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 12964 states and 17898 transitions. [2020-10-29 12:57:08,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 12:57:08,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:08,911 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] [2020-10-29 12:57:08,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:57:08,911 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:08,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:08,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1435187219, now seen corresponding path program 1 times [2020-10-29 12:57:08,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:08,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144841438] [2020-10-29 12:57:08,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:09,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:09,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:09,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:11,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:13,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:13,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 12:57:13,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:57:13,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:57:13,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:13,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:13,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:13,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:13,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 12:57:13,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:14,444 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:57:14,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:14,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:14,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:14,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:57:14,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:14,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:14,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:14,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144841438] [2020-10-29 12:57:14,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:14,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:14,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715245350] [2020-10-29 12:57:14,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:14,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:14,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:14,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:14,527 INFO L87 Difference]: Start difference. First operand 12964 states and 17898 transitions. Second operand 5 states. [2020-10-29 12:57:18,391 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:57:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:20,585 INFO L93 Difference]: Finished difference Result 37002 states and 51118 transitions. [2020-10-29 12:57:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:57:20,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-29 12:57:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:20,642 INFO L225 Difference]: With dead ends: 37002 [2020-10-29 12:57:20,642 INFO L226 Difference]: Without dead ends: 25148 [2020-10-29 12:57:20,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:57:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25148 states. [2020-10-29 12:57:22,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25148 to 25114. [2020-10-29 12:57:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25114 states. [2020-10-29 12:57:22,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25114 states to 25114 states and 34178 transitions. [2020-10-29 12:57:22,780 INFO L78 Accepts]: Start accepts. Automaton has 25114 states and 34178 transitions. Word has length 151 [2020-10-29 12:57:22,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:22,781 INFO L481 AbstractCegarLoop]: Abstraction has 25114 states and 34178 transitions. [2020-10-29 12:57:22,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:22,781 INFO L276 IsEmpty]: Start isEmpty. Operand 25114 states and 34178 transitions. [2020-10-29 12:57:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 12:57:22,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:22,827 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] [2020-10-29 12:57:22,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:57:22,828 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:22,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:22,828 INFO L82 PathProgramCache]: Analyzing trace with hash -629012964, now seen corresponding path program 1 times [2020-10-29 12:57:22,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:22,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197676246] [2020-10-29 12:57:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:23,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:23,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:23,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:23,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:27,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:27,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 12:57:27,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:57:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 12:57:27,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:27,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 12:57:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:57:27,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:28,401 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:57:28,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:28,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:28,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:28,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:28,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:28,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:57:28,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:28,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:28,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197676246] [2020-10-29 12:57:28,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:28,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:28,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195074432] [2020-10-29 12:57:28,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:28,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:28,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:28,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:28,467 INFO L87 Difference]: Start difference. First operand 25114 states and 34178 transitions. Second operand 5 states. [2020-10-29 12:57:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:31,695 INFO L93 Difference]: Finished difference Result 42737 states and 58168 transitions. [2020-10-29 12:57:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:57:31,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-29 12:57:31,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:31,736 INFO L225 Difference]: With dead ends: 42737 [2020-10-29 12:57:31,737 INFO L226 Difference]: Without dead ends: 17783 [2020-10-29 12:57:31,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17783 states. [2020-10-29 12:57:33,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17783 to 17780. [2020-10-29 12:57:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17780 states. [2020-10-29 12:57:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17780 states to 17780 states and 24226 transitions. [2020-10-29 12:57:33,326 INFO L78 Accepts]: Start accepts. Automaton has 17780 states and 24226 transitions. Word has length 152 [2020-10-29 12:57:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:33,327 INFO L481 AbstractCegarLoop]: Abstraction has 17780 states and 24226 transitions. [2020-10-29 12:57:33,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 17780 states and 24226 transitions. [2020-10-29 12:57:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 12:57:33,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:33,349 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] [2020-10-29 12:57:33,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:57:33,350 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:33,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:33,351 INFO L82 PathProgramCache]: Analyzing trace with hash -283812987, now seen corresponding path program 1 times [2020-10-29 12:57:33,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:33,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066405218] [2020-10-29 12:57:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:33,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:33,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:33,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:33,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:33,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:33,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:33,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:38,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:38,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 12:57:38,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:57:38,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:57:38,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:38,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 12:57:38,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:38,853 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:57:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:38,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:38,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:38,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:38,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:57:38,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:38,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:38,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:38,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:38,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:38,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:38,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066405218] [2020-10-29 12:57:38,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:38,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:38,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903151218] [2020-10-29 12:57:38,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:38,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:38,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:38,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:38,942 INFO L87 Difference]: Start difference. First operand 17780 states and 24226 transitions. Second operand 5 states. [2020-10-29 12:57:39,394 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-29 12:57:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:44,252 INFO L93 Difference]: Finished difference Result 32151 states and 43712 transitions. [2020-10-29 12:57:44,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:57:44,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-29 12:57:44,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:44,295 INFO L225 Difference]: With dead ends: 32151 [2020-10-29 12:57:44,296 INFO L226 Difference]: Without dead ends: 17774 [2020-10-29 12:57:44,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:57:44,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17774 states. [2020-10-29 12:57:45,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17774 to 17748. [2020-10-29 12:57:45,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17748 states. [2020-10-29 12:57:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17748 states to 17748 states and 24083 transitions. [2020-10-29 12:57:45,919 INFO L78 Accepts]: Start accepts. Automaton has 17748 states and 24083 transitions. Word has length 159 [2020-10-29 12:57:45,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:45,919 INFO L481 AbstractCegarLoop]: Abstraction has 17748 states and 24083 transitions. [2020-10-29 12:57:45,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 17748 states and 24083 transitions. [2020-10-29 12:57:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 12:57:45,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:45,941 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] [2020-10-29 12:57:45,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:57:45,942 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:45,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:45,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1809359572, now seen corresponding path program 1 times [2020-10-29 12:57:45,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:45,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474788902] [2020-10-29 12:57:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:46,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:46,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:46,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:46,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:46,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:50,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:50,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 12:57:50,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:57:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:57:50,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:50,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:57:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 12:57:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 12:57:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:51,425 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:57:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:51,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:51,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:51,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:51,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:57:51,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:51,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:51,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474788902] [2020-10-29 12:57:51,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:51,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:57:51,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118148748] [2020-10-29 12:57:51,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:57:51,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:51,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:57:51,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:57:51,488 INFO L87 Difference]: Start difference. First operand 17748 states and 24083 transitions. Second operand 4 states. [2020-10-29 12:57:51,911 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 12:57:56,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:56,127 INFO L93 Difference]: Finished difference Result 33453 states and 47246 transitions. [2020-10-29 12:57:56,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:57:56,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-29 12:57:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:56,172 INFO L225 Difference]: With dead ends: 33453 [2020-10-29 12:57:56,172 INFO L226 Difference]: Without dead ends: 26079 [2020-10-29 12:57:56,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26079 states. [2020-10-29 12:57:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26079 to 26004. [2020-10-29 12:57:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26004 states. [2020-10-29 12:57:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26004 states to 26004 states and 35671 transitions. [2020-10-29 12:57:58,488 INFO L78 Accepts]: Start accepts. Automaton has 26004 states and 35671 transitions. Word has length 160 [2020-10-29 12:57:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:58,489 INFO L481 AbstractCegarLoop]: Abstraction has 26004 states and 35671 transitions. [2020-10-29 12:57:58,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:57:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 26004 states and 35671 transitions. [2020-10-29 12:57:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 12:57:58,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:58,509 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] [2020-10-29 12:57:58,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:57:58,510 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:58,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:58,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1616632134, now seen corresponding path program 1 times [2020-10-29 12:57:58,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:58,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815854415] [2020-10-29 12:57:58,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:58,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:58,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:03,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:03,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 12:58:03,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:58:03,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:58:03,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:03,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:58:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:58:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 12:58:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:04,000 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:58:04,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:04,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:04,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:04,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:04,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:04,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:58:04,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:04,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:04,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:58:04,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:04,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:58:04,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:04,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815854415] [2020-10-29 12:58:04,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:04,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:58:04,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279547382] [2020-10-29 12:58:04,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:58:04,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:04,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:58:04,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:58:04,075 INFO L87 Difference]: Start difference. First operand 26004 states and 35671 transitions. Second operand 4 states. [2020-10-29 12:58:04,496 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 12:58:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:10,070 INFO L93 Difference]: Finished difference Result 52735 states and 75028 transitions. [2020-10-29 12:58:10,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:58:10,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-29 12:58:10,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:10,128 INFO L225 Difference]: With dead ends: 52735 [2020-10-29 12:58:10,128 INFO L226 Difference]: Without dead ends: 41849 [2020-10-29 12:58:10,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:58:10,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41849 states. [2020-10-29 12:58:13,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41849 to 41710. [2020-10-29 12:58:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41710 states. [2020-10-29 12:58:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41710 states to 41710 states and 57584 transitions. [2020-10-29 12:58:13,910 INFO L78 Accepts]: Start accepts. Automaton has 41710 states and 57584 transitions. Word has length 160 [2020-10-29 12:58:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:13,910 INFO L481 AbstractCegarLoop]: Abstraction has 41710 states and 57584 transitions. [2020-10-29 12:58:13,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:58:13,910 INFO L276 IsEmpty]: Start isEmpty. Operand 41710 states and 57584 transitions. [2020-10-29 12:58:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 12:58:13,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:13,930 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] [2020-10-29 12:58:13,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:58:13,931 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:13,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1606135069, now seen corresponding path program 1 times [2020-10-29 12:58:13,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:13,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101985975] [2020-10-29 12:58:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:14,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:14,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:18,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:18,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 12:58:18,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:58:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:58:18,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:18,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:58:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:58:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:58:18,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:19,468 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:58:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:19,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:19,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:19,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:19,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:19,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:58:19,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:19,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:19,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:58:19,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:58:19,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:19,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101985975] [2020-10-29 12:58:19,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:19,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:58:19,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256646239] [2020-10-29 12:58:19,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:58:19,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:19,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:58:19,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:58:19,557 INFO L87 Difference]: Start difference. First operand 41710 states and 57584 transitions. Second operand 6 states. [2020-10-29 12:58:20,038 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 12:58:23,910 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-29 12:58:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:28,365 INFO L93 Difference]: Finished difference Result 94970 states and 132316 transitions. [2020-10-29 12:58:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:58:28,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-10-29 12:58:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:28,433 INFO L225 Difference]: With dead ends: 94970 [2020-10-29 12:58:28,433 INFO L226 Difference]: Without dead ends: 55266 [2020-10-29 12:58:28,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:58:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55266 states. [2020-10-29 12:58:33,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55266 to 55258. [2020-10-29 12:58:33,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55258 states. [2020-10-29 12:58:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55258 states to 55258 states and 76376 transitions. [2020-10-29 12:58:33,769 INFO L78 Accepts]: Start accepts. Automaton has 55258 states and 76376 transitions. Word has length 160 [2020-10-29 12:58:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:33,770 INFO L481 AbstractCegarLoop]: Abstraction has 55258 states and 76376 transitions. [2020-10-29 12:58:33,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:58:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 55258 states and 76376 transitions. [2020-10-29 12:58:33,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 12:58:33,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:33,801 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] [2020-10-29 12:58:33,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:58:33,802 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:33,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:33,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1643050681, now seen corresponding path program 1 times [2020-10-29 12:58:33,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:33,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692705469] [2020-10-29 12:58:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:34,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:37,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:39,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:39,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 12:58:39,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:58:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:58:39,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:39,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:58:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 12:58:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 12:58:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:39,878 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 12:58:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:39,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:39,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:39,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:39,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:58:39,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:39,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:39,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:58:39,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:39,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:58:39,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:39,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692705469] [2020-10-29 12:58:39,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:39,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 12:58:39,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730409713] [2020-10-29 12:58:39,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:58:39,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:39,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:58:39,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:58:39,958 INFO L87 Difference]: Start difference. First operand 55258 states and 76376 transitions. Second operand 12 states. [2020-10-29 12:58:41,117 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 244 DAG size of output: 239 [2020-10-29 12:58:47,590 WARN L193 SmtUtils]: Spent 4.22 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-29 12:58:52,746 WARN L193 SmtUtils]: Spent 4.22 s on a formula simplification that was a NOOP. DAG size: 34 [2020-10-29 12:59:03,176 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 12:59:05,760 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 12:59:06,835 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 232 DAG size of output: 227 [2020-10-29 12:59:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:59:31,479 INFO L93 Difference]: Finished difference Result 145654 states and 209969 transitions. [2020-10-29 12:59:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:59:31,480 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 160 [2020-10-29 12:59:31,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:59:31,656 INFO L225 Difference]: With dead ends: 145654 [2020-10-29 12:59:31,657 INFO L226 Difference]: Without dead ends: 123090 [2020-10-29 12:59:31,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:59:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123090 states.