/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:56:42,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:56:42,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:56:42,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:56:42,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:56:42,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:56:42,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:56:42,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:56:42,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:56:42,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:56:42,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:56:42,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:56:42,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:56:42,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:56:42,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:56:42,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:56:42,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:56:42,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:56:42,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:56:42,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:56:42,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:56:42,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:56:42,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:56:42,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:56:42,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:56:42,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:56:42,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:56:42,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:56:42,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:56:42,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:56:42,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:56:42,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:56:42,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:56:42,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:56:42,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:56:42,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:56:42,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:56:42,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:56:42,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:56:42,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:56:42,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:56:42,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:56:42,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:56:42,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:56:42,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:56:42,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:56:42,316 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:56:42,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:56:42,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:56:42,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:56:42,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:56:42,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:56:42,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:56:42,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:56:42,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:56:42,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:56:42,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:56:42,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:56:42,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:56:42,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:56:42,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:56:42,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:56:42,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:56:42,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:56:42,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:56:42,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:56:42,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:56:42,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:56:42,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:56:42,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:56:42,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:56:42,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:56:42,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:56:42,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:56:42,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:56:42,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:56:42,798 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:56:42,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:56:42,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c549924f7/2c13b863e8e64ec49bf7b7aa256d451f/FLAGe042646c9 [2020-10-27 23:56:43,500 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:56:43,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:56:43,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c549924f7/2c13b863e8e64ec49bf7b7aa256d451f/FLAGe042646c9 [2020-10-27 23:56:43,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c549924f7/2c13b863e8e64ec49bf7b7aa256d451f [2020-10-27 23:56:43,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:56:43,807 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:56:43,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:56:43,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:56:43,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:56:43,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:56:43" (1/1) ... [2020-10-27 23:56:43,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a72b91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:43, skipping insertion in model container [2020-10-27 23:56:43,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:56:43" (1/1) ... [2020-10-27 23:56:43,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:56:43,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:56:44,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:56:44,283 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:56:44,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:56:44,484 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:56:44,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:44 WrapperNode [2020-10-27 23:56:44,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:56:44,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:56:44,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:56:44,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:56:44,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:44" (1/1) ... [2020-10-27 23:56:44,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:44" (1/1) ... [2020-10-27 23:56:44,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:44" (1/1) ... [2020-10-27 23:56:44,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:44" (1/1) ... [2020-10-27 23:56:44,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:44" (1/1) ... [2020-10-27 23:56:44,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:44" (1/1) ... [2020-10-27 23:56:44,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:44" (1/1) ... [2020-10-27 23:56:44,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:56:44,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:56:44,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:56:44,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:56:44,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:56:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:56:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:56:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:56:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:56:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:56:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:56:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:56:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:56:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:56:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:56:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:56:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:56:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:56:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:56:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:56:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:56:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:56:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:56:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:56:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:56:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:56:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 23:56:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:56:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:56:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:56:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:56:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:56:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:56:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:56:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:56:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:56:46,163 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:56:46,163 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:56:46,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:56:46 BoogieIcfgContainer [2020-10-27 23:56:46,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:56:46,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:56:46,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:56:46,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:56:46,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:56:43" (1/3) ... [2020-10-27 23:56:46,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6b1cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:56:46, skipping insertion in model container [2020-10-27 23:56:46,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:44" (2/3) ... [2020-10-27 23:56:46,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6b1cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:56:46, skipping insertion in model container [2020-10-27 23:56:46,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:56:46" (3/3) ... [2020-10-27 23:56:46,175 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:56:46,187 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:56:46,192 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:56:46,206 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:56:46,236 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:56:46,237 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:56:46,237 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:56:46,237 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:56:46,237 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:56:46,237 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:56:46,237 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:56:46,238 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:56:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-10-27 23:56:46,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 23:56:46,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:46,273 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] [2020-10-27 23:56:46,274 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:46,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1904996340, now seen corresponding path program 1 times [2020-10-27 23:56:46,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:46,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759100211] [2020-10-27 23:56:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:46,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:47,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:47,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:47,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:47,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:48,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:48,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:48,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:49,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:49,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:49,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:50,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:50,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:51,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:51,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:51,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:51,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:56:51,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 23:56:51,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 23:56:51,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:56:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 23:56:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 23:56:51,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 23:56:52,576 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:56:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:52,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:52,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:52,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:52,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 23:56:52,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:52,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759100211] [2020-10-27 23:56:52,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:52,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:56:52,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865307506] [2020-10-27 23:56:52,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:56:52,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:52,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:56:52,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:56:52,730 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-10-27 23:56:53,378 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:56:55,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:55,361 INFO L93 Difference]: Finished difference Result 364 states and 601 transitions. [2020-10-27 23:56:55,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:56:55,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-27 23:56:55,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:55,378 INFO L225 Difference]: With dead ends: 364 [2020-10-27 23:56:55,378 INFO L226 Difference]: Without dead ends: 277 [2020-10-27 23:56:55,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:56:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-27 23:56:55,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 274. [2020-10-27 23:56:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-27 23:56:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 396 transitions. [2020-10-27 23:56:55,469 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 396 transitions. Word has length 95 [2020-10-27 23:56:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:55,470 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 396 transitions. [2020-10-27 23:56:55,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:56:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 396 transitions. [2020-10-27 23:56:55,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 23:56:55,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:55,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:56:55,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:56:55,476 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:55,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:55,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1490450090, now seen corresponding path program 1 times [2020-10-27 23:56:55,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:55,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862679572] [2020-10-27 23:56:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:55,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:55,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:55,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:55,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:55,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:56,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:56,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:57,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:58,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:58,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:00,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:00,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 23:57:00,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:57:00,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 23:57:00,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:00,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:57:00,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 23:57:00,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 23:57:00,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:01,256 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:57:01,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:01,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:01,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:01,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:01,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:57:01,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:01,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:01,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:01,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862679572] [2020-10-27 23:57:01,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:01,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:57:01,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070586953] [2020-10-27 23:57:01,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:57:01,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:01,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:57:01,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:57:01,319 INFO L87 Difference]: Start difference. First operand 274 states and 396 transitions. Second operand 7 states. [2020-10-27 23:57:02,074 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:03,698 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:04,328 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:04,951 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:57:05,594 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:57:07,195 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:07,778 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:57:08,741 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:57:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:08,877 INFO L93 Difference]: Finished difference Result 1551 states and 2410 transitions. [2020-10-27 23:57:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:57:08,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-27 23:57:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:08,890 INFO L225 Difference]: With dead ends: 1551 [2020-10-27 23:57:08,890 INFO L226 Difference]: Without dead ends: 1347 [2020-10-27 23:57:08,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:57:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-10-27 23:57:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 624. [2020-10-27 23:57:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-10-27 23:57:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 947 transitions. [2020-10-27 23:57:08,977 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 947 transitions. Word has length 97 [2020-10-27 23:57:08,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:08,978 INFO L481 AbstractCegarLoop]: Abstraction has 624 states and 947 transitions. [2020-10-27 23:57:08,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:57:08,978 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 947 transitions. [2020-10-27 23:57:08,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:57:08,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:08,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:57:08,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:57:08,983 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:08,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1090930890, now seen corresponding path program 1 times [2020-10-27 23:57:08,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:08,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54479795] [2020-10-27 23:57:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:09,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:09,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:09,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:09,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:10,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:10,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:14,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:14,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:57:14,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:57:14,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:57:14,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:57:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:57:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 23:57:14,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:14,716 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:57:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:14,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:14,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:14,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:14,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:57:14,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:14,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54479795] [2020-10-27 23:57:14,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:14,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:57:14,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922996969] [2020-10-27 23:57:14,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:57:14,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:14,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:57:14,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:57:14,802 INFO L87 Difference]: Start difference. First operand 624 states and 947 transitions. Second operand 7 states. [2020-10-27 23:57:15,493 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:17,025 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:17,615 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:57:18,202 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:57:18,817 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:20,408 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:20,995 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:57:21,926 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:57:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:22,028 INFO L93 Difference]: Finished difference Result 3332 states and 5226 transitions. [2020-10-27 23:57:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:57:22,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-27 23:57:22,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:22,051 INFO L225 Difference]: With dead ends: 3332 [2020-10-27 23:57:22,051 INFO L226 Difference]: Without dead ends: 2986 [2020-10-27 23:57:22,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:57:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-10-27 23:57:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1119. [2020-10-27 23:57:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-10-27 23:57:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1721 transitions. [2020-10-27 23:57:22,158 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1721 transitions. Word has length 98 [2020-10-27 23:57:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:22,160 INFO L481 AbstractCegarLoop]: Abstraction has 1119 states and 1721 transitions. [2020-10-27 23:57:22,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:57:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1721 transitions. [2020-10-27 23:57:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:57:22,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:22,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:57:22,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:57:22,175 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:22,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:22,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1578467385, now seen corresponding path program 1 times [2020-10-27 23:57:22,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:22,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576626703] [2020-10-27 23:57:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:22,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:22,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:22,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:22,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:23,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:23,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:23,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:24,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:27,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:27,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:57:27,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:57:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:57:27,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:57:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:57:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 23:57:27,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:27,891 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:57:27,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:27,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:27,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:27,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:27,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 23:57:27,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:27,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576626703] [2020-10-27 23:57:27,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:27,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:57:27,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18237501] [2020-10-27 23:57:27,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:57:27,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:27,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:57:27,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:57:27,971 INFO L87 Difference]: Start difference. First operand 1119 states and 1721 transitions. Second operand 7 states. [2020-10-27 23:57:28,577 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:29,985 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:30,659 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:31,265 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:57:31,897 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:57:33,381 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:34,007 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:57:35,052 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:57:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:35,168 INFO L93 Difference]: Finished difference Result 4396 states and 6906 transitions. [2020-10-27 23:57:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:57:35,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-27 23:57:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:35,191 INFO L225 Difference]: With dead ends: 4396 [2020-10-27 23:57:35,191 INFO L226 Difference]: Without dead ends: 3774 [2020-10-27 23:57:35,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:57:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2020-10-27 23:57:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 1427. [2020-10-27 23:57:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1427 states. [2020-10-27 23:57:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2207 transitions. [2020-10-27 23:57:35,304 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2207 transitions. Word has length 98 [2020-10-27 23:57:35,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:35,305 INFO L481 AbstractCegarLoop]: Abstraction has 1427 states and 2207 transitions. [2020-10-27 23:57:35,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:57:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2207 transitions. [2020-10-27 23:57:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:57:35,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:35,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:57:35,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:57:35,308 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:35,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1738092103, now seen corresponding path program 1 times [2020-10-27 23:57:35,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:35,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941469977] [2020-10-27 23:57:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:35,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:35,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:35,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:35,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:35,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:35,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:40,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:40,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:57:40,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:57:40,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:57:40,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:57:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:57:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 23:57:40,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:41,075 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:57:41,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:41,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:41,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:41,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:41,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:57:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:41,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941469977] [2020-10-27 23:57:41,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:41,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:57:41,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104499122] [2020-10-27 23:57:41,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:57:41,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:41,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:57:41,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:57:41,123 INFO L87 Difference]: Start difference. First operand 1427 states and 2207 transitions. Second operand 7 states. [2020-10-27 23:57:41,728 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:43,262 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:43,857 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:57:44,462 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:57:45,079 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:46,966 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:57:47,585 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:48,562 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:57:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:48,648 INFO L93 Difference]: Finished difference Result 7281 states and 11440 transitions. [2020-10-27 23:57:48,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:57:48,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-27 23:57:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:48,685 INFO L225 Difference]: With dead ends: 7281 [2020-10-27 23:57:48,685 INFO L226 Difference]: Without dead ends: 6647 [2020-10-27 23:57:48,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:57:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2020-10-27 23:57:48,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 2072. [2020-10-27 23:57:48,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2072 states. [2020-10-27 23:57:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3205 transitions. [2020-10-27 23:57:48,901 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3205 transitions. Word has length 99 [2020-10-27 23:57:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:48,901 INFO L481 AbstractCegarLoop]: Abstraction has 2072 states and 3205 transitions. [2020-10-27 23:57:48,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:57:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3205 transitions. [2020-10-27 23:57:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:57:48,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:48,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:57:48,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:57:48,904 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:48,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:48,905 INFO L82 PathProgramCache]: Analyzing trace with hash -761791926, now seen corresponding path program 1 times [2020-10-27 23:57:48,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:48,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761710022] [2020-10-27 23:57:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:49,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:49,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:49,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:49,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:53,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:53,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:57:53,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:57:53,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 23:57:53,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:57:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:57:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 23:57:53,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:54,579 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:57:54,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:54,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:54,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:54,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:54,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:54,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:57:54,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:54,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:54,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761710022] [2020-10-27 23:57:54,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:54,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:57:54,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078156674] [2020-10-27 23:57:54,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:57:54,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:54,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:57:54,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:57:54,657 INFO L87 Difference]: Start difference. First operand 2072 states and 3205 transitions. Second operand 7 states. [2020-10-27 23:57:55,297 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:56,830 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:57,442 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:57:58,041 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:57:58,651 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:00,497 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:58:01,100 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:02,139 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:58:02,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:58:02,285 INFO L93 Difference]: Finished difference Result 8565 states and 13438 transitions. [2020-10-27 23:58:02,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:58:02,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-27 23:58:02,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:58:02,318 INFO L225 Difference]: With dead ends: 8565 [2020-10-27 23:58:02,318 INFO L226 Difference]: Without dead ends: 7389 [2020-10-27 23:58:02,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:58:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7389 states. [2020-10-27 23:58:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7389 to 2670. [2020-10-27 23:58:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2670 states. [2020-10-27 23:58:02,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4145 transitions. [2020-10-27 23:58:02,580 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4145 transitions. Word has length 99 [2020-10-27 23:58:02,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:58:02,580 INFO L481 AbstractCegarLoop]: Abstraction has 2670 states and 4145 transitions. [2020-10-27 23:58:02,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:58:02,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4145 transitions. [2020-10-27 23:58:02,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:58:02,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:58:02,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:58:02,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:58:02,584 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:58:02,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:58:02,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1249328421, now seen corresponding path program 1 times [2020-10-27 23:58:02,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:58:02,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532036083] [2020-10-27 23:58:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:58:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:03,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:03,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:06,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:06,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:07,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:07,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:58:07,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:58:07,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 23:58:07,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:58:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:58:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 23:58:07,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:08,261 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:58:08,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:58:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:08,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:08,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:58:08,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:58:08,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:58:08,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:58:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:58:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:58:08,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:08,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:58:08,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532036083] [2020-10-27 23:58:08,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:58:08,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:58:08,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908429014] [2020-10-27 23:58:08,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:58:08,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:58:08,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:58:08,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:58:08,307 INFO L87 Difference]: Start difference. First operand 2670 states and 4145 transitions. Second operand 7 states. [2020-10-27 23:58:09,037 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:10,630 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:58:11,303 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:11,957 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:58:12,568 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:58:14,444 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:58:15,100 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:16,257 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:58:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:58:16,401 INFO L93 Difference]: Finished difference Result 9399 states and 14752 transitions. [2020-10-27 23:58:16,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:58:16,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-27 23:58:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:58:16,432 INFO L225 Difference]: With dead ends: 9399 [2020-10-27 23:58:16,432 INFO L226 Difference]: Without dead ends: 8207 [2020-10-27 23:58:16,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:58:16,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8207 states. [2020-10-27 23:58:16,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8207 to 3288. [2020-10-27 23:58:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3288 states. [2020-10-27 23:58:16,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 5117 transitions. [2020-10-27 23:58:16,804 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 5117 transitions. Word has length 99 [2020-10-27 23:58:16,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:58:16,805 INFO L481 AbstractCegarLoop]: Abstraction has 3288 states and 5117 transitions. [2020-10-27 23:58:16,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:58:16,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 5117 transitions. [2020-10-27 23:58:16,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:58:16,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:58:16,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:58:16,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:58:16,809 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:58:16,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:58:16,809 INFO L82 PathProgramCache]: Analyzing trace with hash -124718811, now seen corresponding path program 1 times [2020-10-27 23:58:16,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:58:16,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125855535] [2020-10-27 23:58:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:58:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:16,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:16,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:17,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:17,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:17,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:18,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:19,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:21,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:21,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:21,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:21,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:58:21,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:58:21,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:58:21,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:21,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:58:21,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:58:21,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:58:21,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:22,500 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:58:22,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:58:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:22,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:22,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:58:22,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:58:22,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:58:22,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:58:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:58:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:58:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:58:22,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125855535] [2020-10-27 23:58:22,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:58:22,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:58:22,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560140121] [2020-10-27 23:58:22,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:58:22,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:58:22,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:58:22,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:58:22,581 INFO L87 Difference]: Start difference. First operand 3288 states and 5117 transitions. Second operand 7 states. [2020-10-27 23:58:23,255 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:24,930 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:58:25,575 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:26,184 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:58:26,793 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:58:29,200 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:29,815 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:58:30,852 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:58:30,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:58:30,936 INFO L93 Difference]: Finished difference Result 15972 states and 25042 transitions. [2020-10-27 23:58:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:58:30,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-27 23:58:30,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:58:30,970 INFO L225 Difference]: With dead ends: 15972 [2020-10-27 23:58:30,970 INFO L226 Difference]: Without dead ends: 14760 [2020-10-27 23:58:30,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:58:30,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14760 states. [2020-10-27 23:58:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14760 to 3951. [2020-10-27 23:58:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3951 states. [2020-10-27 23:58:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 6119 transitions. [2020-10-27 23:58:31,588 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 6119 transitions. Word has length 100 [2020-10-27 23:58:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:58:31,589 INFO L481 AbstractCegarLoop]: Abstraction has 3951 states and 6119 transitions. [2020-10-27 23:58:31,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:58:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 6119 transitions. [2020-10-27 23:58:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:58:31,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:58:31,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:58:31,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:58:31,593 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:58:31,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:58:31,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2127968694, now seen corresponding path program 1 times [2020-10-27 23:58:31,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:58:31,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806160055] [2020-10-27 23:58:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:58:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:31,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:31,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:32,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:32,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:32,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:32,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:32,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:35,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:36,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:36,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:58:36,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:58:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:58:36,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:58:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:58:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 23:58:36,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:37,282 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:58:37,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:58:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:37,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:37,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:58:37,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:58:37,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:58:37,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:58:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:58:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:58:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:58:37,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806160055] [2020-10-27 23:58:37,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:58:37,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:58:37,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685241129] [2020-10-27 23:58:37,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:58:37,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:58:37,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:58:37,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:58:37,318 INFO L87 Difference]: Start difference. First operand 3951 states and 6119 transitions. Second operand 7 states. [2020-10-27 23:58:38,029 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:39,786 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:58:40,426 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:40,983 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:58:41,557 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:58:43,949 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:44,563 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:58:45,849 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:58:46,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:58:46,041 INFO L93 Difference]: Finished difference Result 16846 states and 26338 transitions. [2020-10-27 23:58:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:58:46,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-27 23:58:46,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:58:46,074 INFO L225 Difference]: With dead ends: 16846 [2020-10-27 23:58:46,074 INFO L226 Difference]: Without dead ends: 14564 [2020-10-27 23:58:46,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:58:46,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14564 states. [2020-10-27 23:58:46,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14564 to 5125. [2020-10-27 23:58:46,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5125 states. [2020-10-27 23:58:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 7955 transitions. [2020-10-27 23:58:46,846 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 7955 transitions. Word has length 100 [2020-10-27 23:58:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:58:46,847 INFO L481 AbstractCegarLoop]: Abstraction has 5125 states and 7955 transitions. [2020-10-27 23:58:46,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:58:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 7955 transitions. [2020-10-27 23:58:46,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:58:46,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:58:46,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:58:46,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:58:46,852 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:58:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:58:46,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1190698425, now seen corresponding path program 1 times [2020-10-27 23:58:46,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:58:46,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709872643] [2020-10-27 23:58:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:58:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:46,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:46,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:47,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:47,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:48,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:48,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:49,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:49,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:51,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:51,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:58:51,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:58:51,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:58:51,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:58:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:58:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 23:58:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:52,516 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:58:52,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:58:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:52,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:52,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:58:52,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:58:52,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:58:52,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:58:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:58:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:58:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:58:52,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709872643] [2020-10-27 23:58:52,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:58:52,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:58:52,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511468298] [2020-10-27 23:58:52,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:58:52,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:58:52,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:58:52,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:58:52,550 INFO L87 Difference]: Start difference. First operand 5125 states and 7955 transitions. Second operand 7 states. [2020-10-27 23:58:53,249 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:55,021 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:58:55,662 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:58:56,265 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:58:56,871 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:58:59,659 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:59:00,286 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:59:01,767 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:59:01,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:59:01,995 INFO L93 Difference]: Finished difference Result 18522 states and 28962 transitions. [2020-10-27 23:59:01,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:59:01,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-27 23:59:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:59:02,033 INFO L225 Difference]: With dead ends: 18522 [2020-10-27 23:59:02,033 INFO L226 Difference]: Without dead ends: 16224 [2020-10-27 23:59:02,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:59:02,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16224 states. [2020-10-27 23:59:03,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16224 to 6319. [2020-10-27 23:59:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6319 states. [2020-10-27 23:59:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6319 states to 6319 states and 9823 transitions. [2020-10-27 23:59:03,021 INFO L78 Accepts]: Start accepts. Automaton has 6319 states and 9823 transitions. Word has length 100 [2020-10-27 23:59:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:59:03,022 INFO L481 AbstractCegarLoop]: Abstraction has 6319 states and 9823 transitions. [2020-10-27 23:59:03,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:59:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 6319 states and 9823 transitions. [2020-10-27 23:59:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:59:03,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:59:03,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:59:03,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:59:03,031 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:59:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:59:03,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1678234920, now seen corresponding path program 1 times [2020-10-27 23:59:03,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:59:03,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867241335] [2020-10-27 23:59:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:59:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:03,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:05,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:08,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:08,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:59:08,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 23:59:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:59:08,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:59:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 23:59:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:59:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:59:08,417 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 14 [2020-10-27 23:59:09,040 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:59:09,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:59:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:09,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:09,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:09,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:59:09,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:59:09,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:59:09,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:09,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:59:09,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:59:09,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:59:09,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:59:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:59:09,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867241335] [2020-10-27 23:59:09,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:59:09,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:59:09,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382584841] [2020-10-27 23:59:09,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:59:09,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:59:09,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:59:09,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:59:09,124 INFO L87 Difference]: Start difference. First operand 6319 states and 9823 transitions. Second operand 10 states. [2020-10-27 23:59:09,778 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:59:12,259 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:59:19,181 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:59:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:59:19,762 INFO L93 Difference]: Finished difference Result 41832 states and 64321 transitions. [2020-10-27 23:59:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:59:19,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-27 23:59:19,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:59:19,822 INFO L225 Difference]: With dead ends: 41832 [2020-10-27 23:59:19,823 INFO L226 Difference]: Without dead ends: 36327 [2020-10-27 23:59:19,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2020-10-27 23:59:19,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36327 states. [2020-10-27 23:59:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36327 to 6282. [2020-10-27 23:59:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6282 states. [2020-10-27 23:59:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 9745 transitions. [2020-10-27 23:59:21,073 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 9745 transitions. Word has length 100 [2020-10-27 23:59:21,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:59:21,073 INFO L481 AbstractCegarLoop]: Abstraction has 6282 states and 9745 transitions. [2020-10-27 23:59:21,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:59:21,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 9745 transitions. [2020-10-27 23:59:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:59:21,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:59:21,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:59:21,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:59:21,079 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:59:21,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:59:21,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1977667609, now seen corresponding path program 1 times [2020-10-27 23:59:21,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:59:21,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415168447] [2020-10-27 23:59:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:59:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:21,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:24,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:26,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:26,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:59:26,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:59:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:59:26,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:59:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 23:59:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:59:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:59:26,873 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:59:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:59:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:26,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:26,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:26,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:59:26,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:59:26,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:59:26,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:26,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:59:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:59:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:59:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:59:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:59:26,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415168447] [2020-10-27 23:59:26,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:59:26,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:59:26,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68835622] [2020-10-27 23:59:26,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:59:26,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:59:26,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:59:26,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:59:26,928 INFO L87 Difference]: Start difference. First operand 6282 states and 9745 transitions. Second operand 10 states. [2020-10-27 23:59:27,532 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:59:29,975 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:59:37,629 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:59:43,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:59:43,172 INFO L93 Difference]: Finished difference Result 79933 states and 123339 transitions. [2020-10-27 23:59:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 23:59:43,173 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-27 23:59:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:59:43,317 INFO L225 Difference]: With dead ends: 79933 [2020-10-27 23:59:43,317 INFO L226 Difference]: Without dead ends: 73884 [2020-10-27 23:59:43,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2020-10-27 23:59:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73884 states. [2020-10-27 23:59:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73884 to 6397. [2020-10-27 23:59:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6397 states. [2020-10-27 23:59:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6397 states to 6397 states and 9790 transitions. [2020-10-27 23:59:45,499 INFO L78 Accepts]: Start accepts. Automaton has 6397 states and 9790 transitions. Word has length 100 [2020-10-27 23:59:45,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:59:45,499 INFO L481 AbstractCegarLoop]: Abstraction has 6397 states and 9790 transitions. [2020-10-27 23:59:45,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:59:45,499 INFO L276 IsEmpty]: Start isEmpty. Operand 6397 states and 9790 transitions. [2020-10-27 23:59:45,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:59:45,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:59:45,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:59:45,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:59:45,505 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:59:45,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:59:45,505 INFO L82 PathProgramCache]: Analyzing trace with hash -65633219, now seen corresponding path program 1 times [2020-10-27 23:59:45,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:59:45,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391851542] [2020-10-27 23:59:45,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:59:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:45,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:45,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:45,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:46,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:47,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:48,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:48,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:50,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:50,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:59:50,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:59:50,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:59:50,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:59:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:59:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 23:59:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:59:50,916 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2020-10-27 23:59:51,664 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:59:51,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:59:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:51,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:51,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:59:51,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:59:51,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:59:51,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:59:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:59:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:59:51,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:59:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:59:51,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391851542] [2020-10-27 23:59:51,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:59:51,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:59:51,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010307807] [2020-10-27 23:59:51,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:59:51,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:59:51,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:59:51,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:59:51,720 INFO L87 Difference]: Start difference. First operand 6397 states and 9790 transitions. Second operand 12 states. [2020-10-27 23:59:52,547 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 23:59:53,295 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-27 23:59:56,512 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:59:57,203 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:59:57,822 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 00:00:06,714 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 00:00:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:00:11,193 INFO L93 Difference]: Finished difference Result 45055 states and 68399 transitions. [2020-10-28 00:00:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-28 00:00:11,193 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-10-28 00:00:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:00:11,269 INFO L225 Difference]: With dead ends: 45055 [2020-10-28 00:00:11,269 INFO L226 Difference]: Without dead ends: 40753 [2020-10-28 00:00:11,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=412, Invalid=2344, Unknown=0, NotChecked=0, Total=2756 [2020-10-28 00:00:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40753 states. [2020-10-28 00:00:13,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40753 to 6424. [2020-10-28 00:00:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6424 states. [2020-10-28 00:00:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6424 states to 6424 states and 9817 transitions. [2020-10-28 00:00:13,070 INFO L78 Accepts]: Start accepts. Automaton has 6424 states and 9817 transitions. Word has length 100 [2020-10-28 00:00:13,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:00:13,070 INFO L481 AbstractCegarLoop]: Abstraction has 6424 states and 9817 transitions. [2020-10-28 00:00:13,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 00:00:13,070 INFO L276 IsEmpty]: Start isEmpty. Operand 6424 states and 9817 transitions. [2020-10-28 00:00:13,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 00:00:13,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:00:13,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:00:13,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:00:13,075 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:00:13,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:00:13,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1242315308, now seen corresponding path program 1 times [2020-10-28 00:00:13,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:00:13,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981225232] [2020-10-28 00:00:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:00:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:00:13,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:13,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:14,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:14,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:14,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:15,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:15,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:15,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:18,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:00:18,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 00:00:18,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:00:18,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:00:18,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:00:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:00:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 00:00:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 00:00:18,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:00:18,759 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 00:00:18,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:00:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:00:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:18,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:00:18,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:00:18,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:00:18,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:00:18,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:00:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:00:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:00:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:00:18,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:00:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:00:18,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981225232] [2020-10-28 00:00:18,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:00:18,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:00:18,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634246455] [2020-10-28 00:00:18,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:00:18,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:00:18,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:00:18,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:00:18,789 INFO L87 Difference]: Start difference. First operand 6424 states and 9817 transitions. Second operand 7 states. [2020-10-28 00:00:19,468 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 185