/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:58:30,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:58:30,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:58:30,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:58:30,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:58:30,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:58:30,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:58:30,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:58:30,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:58:30,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:58:30,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:58:30,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:58:30,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:58:30,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:58:30,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:58:30,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:58:30,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:58:30,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:58:30,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:58:30,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:58:30,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:58:30,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:58:30,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:58:30,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:58:30,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:58:30,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:58:30,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:58:30,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:58:30,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:58:30,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:58:30,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:58:30,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:58:30,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:58:30,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:58:30,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:58:30,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:58:30,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:58:30,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:58:30,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:58:30,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:58:30,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:58:30,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:58:30,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:58:30,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:58:30,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:58:30,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:58:30,266 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:58:30,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:58:30,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:58:30,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:58:30,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:58:30,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:58:30,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:58:30,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:58:30,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:58:30,268 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:58:30,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:58:30,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:58:30,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:58:30,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:58:30,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:58:30,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:58:30,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:58:30,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:58:30,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:58:30,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:58:30,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:58:30,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:58:30,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:58:30,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:58:30,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:58:30,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:58:30,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:58:30,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:58:30,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:58:30,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:58:30,706 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:58:30,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:58:30,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b831c000/c08621e1a7d74569a8d9ef0ac9b0d8eb/FLAGbae299f04 [2020-10-29 13:58:31,552 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:58:31,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:58:31,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b831c000/c08621e1a7d74569a8d9ef0ac9b0d8eb/FLAGbae299f04 [2020-10-29 13:58:31,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b831c000/c08621e1a7d74569a8d9ef0ac9b0d8eb [2020-10-29 13:58:31,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:58:31,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:58:31,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:58:31,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:58:31,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:58:31,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:58:31" (1/1) ... [2020-10-29 13:58:31,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@172adc38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:31, skipping insertion in model container [2020-10-29 13:58:31,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:58:31" (1/1) ... [2020-10-29 13:58:31,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:58:31,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:58:32,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:58:32,264 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:58:32,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:58:32,444 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:58:32,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:32 WrapperNode [2020-10-29 13:58:32,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:58:32,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:58:32,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:58:32,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:58:32,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:32" (1/1) ... [2020-10-29 13:58:32,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:32" (1/1) ... [2020-10-29 13:58:32,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:32" (1/1) ... [2020-10-29 13:58:32,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:32" (1/1) ... [2020-10-29 13:58:32,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:32" (1/1) ... [2020-10-29 13:58:32,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:32" (1/1) ... [2020-10-29 13:58:32,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:32" (1/1) ... [2020-10-29 13:58:32,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:58:32,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:58:32,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:58:32,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:58:32,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:58:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:58:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:58:32,641 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:58:32,641 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:58:32,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:58:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:58:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:58:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:58:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:58:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:58:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:58:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:58:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:58:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:58:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:58:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:58:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:58:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:58:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:58:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:58:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:58:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:58:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:58:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:58:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:58:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:58:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:58:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:58:33,851 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:58:33,853 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:58:33,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:58:33 BoogieIcfgContainer [2020-10-29 13:58:33,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:58:33,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:58:33,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:58:33,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:58:33,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:58:31" (1/3) ... [2020-10-29 13:58:33,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43872c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:58:33, skipping insertion in model container [2020-10-29 13:58:33,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:32" (2/3) ... [2020-10-29 13:58:33,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43872c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:58:33, skipping insertion in model container [2020-10-29 13:58:33,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:58:33" (3/3) ... [2020-10-29 13:58:33,867 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:58:33,879 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:58:33,886 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:58:33,901 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:58:33,944 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:58:33,945 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:58:33,945 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:58:33,945 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:58:33,945 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:58:33,945 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:58:33,945 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:58:33,946 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:58:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states. [2020-10-29 13:58:33,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:58:33,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:33,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:33,995 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:34,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:34,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1206189751, now seen corresponding path program 1 times [2020-10-29 13:58:34,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:34,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869189187] [2020-10-29 13:58:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:37,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:39,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:39,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:58:39,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:58:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 13:58:39,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:39,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 13:58:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:58:40,143 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:58:40,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:40,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:40,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:40,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:40,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:40,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 13:58:40,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:40,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:40,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:40,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:40,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:40,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:40,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869189187] [2020-10-29 13:58:40,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:40,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:40,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832896673] [2020-10-29 13:58:40,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:40,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:40,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:40,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:40,312 INFO L87 Difference]: Start difference. First operand 256 states. Second operand 5 states. [2020-10-29 13:58:42,131 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:58:43,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:43,121 INFO L93 Difference]: Finished difference Result 713 states and 1238 transitions. [2020-10-29 13:58:43,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:58:43,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-29 13:58:43,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:43,139 INFO L225 Difference]: With dead ends: 713 [2020-10-29 13:58:43,140 INFO L226 Difference]: Without dead ends: 474 [2020-10-29 13:58:43,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:43,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-10-29 13:58:43,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 471. [2020-10-29 13:58:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-29 13:58:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 690 transitions. [2020-10-29 13:58:43,238 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 690 transitions. Word has length 106 [2020-10-29 13:58:43,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:43,239 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 690 transitions. [2020-10-29 13:58:43,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:43,239 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 690 transitions. [2020-10-29 13:58:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:58:43,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:43,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:43,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:58:43,244 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:43,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:43,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1743149799, now seen corresponding path program 1 times [2020-10-29 13:58:43,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:43,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904762052] [2020-10-29 13:58:43,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:44,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:44,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:45,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:48,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:48,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:58:48,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:58:48,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:58:48,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:48,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:48,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 13:58:48,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:48,745 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:58:48,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:48,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:48,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:48,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:48,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:48,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:58:48,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:48,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:48,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:48,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904762052] [2020-10-29 13:58:48,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:48,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:48,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686014361] [2020-10-29 13:58:48,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:48,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:48,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:48,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:48,821 INFO L87 Difference]: Start difference. First operand 471 states and 690 transitions. Second operand 5 states. [2020-10-29 13:58:50,192 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:58:51,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:51,277 INFO L93 Difference]: Finished difference Result 1177 states and 1734 transitions. [2020-10-29 13:58:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:51,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-29 13:58:51,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:51,284 INFO L225 Difference]: With dead ends: 1177 [2020-10-29 13:58:51,284 INFO L226 Difference]: Without dead ends: 892 [2020-10-29 13:58:51,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:51,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-10-29 13:58:51,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 889. [2020-10-29 13:58:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-10-29 13:58:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1288 transitions. [2020-10-29 13:58:51,368 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1288 transitions. Word has length 107 [2020-10-29 13:58:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:51,368 INFO L481 AbstractCegarLoop]: Abstraction has 889 states and 1288 transitions. [2020-10-29 13:58:51,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1288 transitions. [2020-10-29 13:58:51,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:58:51,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:51,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:51,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:58:51,373 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:51,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:51,374 INFO L82 PathProgramCache]: Analyzing trace with hash -526038678, now seen corresponding path program 1 times [2020-10-29 13:58:51,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:51,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565318866] [2020-10-29 13:58:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:51,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:52,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:52,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:52,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:52,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:53,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:56,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:56,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:58:56,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:58:56,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:58:56,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:56,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 13:58:56,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:56,887 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:58:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:56,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:56,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:56,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:56,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:58:56,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:56,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:56,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:56,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565318866] [2020-10-29 13:58:56,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:56,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:56,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642624671] [2020-10-29 13:58:56,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:56,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:56,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:56,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:56,998 INFO L87 Difference]: Start difference. First operand 889 states and 1288 transitions. Second operand 5 states. [2020-10-29 13:58:58,557 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:58:59,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:59,657 INFO L93 Difference]: Finished difference Result 2419 states and 3525 transitions. [2020-10-29 13:58:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:59,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-29 13:58:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:59,674 INFO L225 Difference]: With dead ends: 2419 [2020-10-29 13:58:59,675 INFO L226 Difference]: Without dead ends: 1716 [2020-10-29 13:58:59,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:59,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-10-29 13:58:59,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1713. [2020-10-29 13:58:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1713 states. [2020-10-29 13:58:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2456 transitions. [2020-10-29 13:58:59,815 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2456 transitions. Word has length 108 [2020-10-29 13:58:59,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:59,815 INFO L481 AbstractCegarLoop]: Abstraction has 1713 states and 2456 transitions. [2020-10-29 13:58:59,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:59,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2456 transitions. [2020-10-29 13:58:59,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 13:58:59,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:59,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:59,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:58:59,824 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:59,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:59,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1674345277, now seen corresponding path program 1 times [2020-10-29 13:58:59,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:59,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000053115] [2020-10-29 13:58:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:59,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:59,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:00,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:01,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:04,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:04,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 13:59:04,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:59:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 13:59:04,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:04,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 13:59:04,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:05,404 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:05,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:05,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:05,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:05,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:05,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:59:05,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:05,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:05,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000053115] [2020-10-29 13:59:05,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:05,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:05,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048204668] [2020-10-29 13:59:05,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:05,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:05,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:05,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:05,484 INFO L87 Difference]: Start difference. First operand 1713 states and 2456 transitions. Second operand 5 states. [2020-10-29 13:59:07,029 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:59:08,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:08,134 INFO L93 Difference]: Finished difference Result 4667 states and 6681 transitions. [2020-10-29 13:59:08,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:08,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-29 13:59:08,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:08,152 INFO L225 Difference]: With dead ends: 4667 [2020-10-29 13:59:08,152 INFO L226 Difference]: Without dead ends: 3274 [2020-10-29 13:59:08,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:08,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2020-10-29 13:59:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3271. [2020-10-29 13:59:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3271 states. [2020-10-29 13:59:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 4619 transitions. [2020-10-29 13:59:08,407 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 4619 transitions. Word has length 109 [2020-10-29 13:59:08,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:08,408 INFO L481 AbstractCegarLoop]: Abstraction has 3271 states and 4619 transitions. [2020-10-29 13:59:08,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 4619 transitions. [2020-10-29 13:59:08,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 13:59:08,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:08,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:08,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:59:08,415 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:08,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:08,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1160376500, now seen corresponding path program 1 times [2020-10-29 13:59:08,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:08,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219064932] [2020-10-29 13:59:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:08,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:08,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:08,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:11,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:13,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:13,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 13:59:13,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:59:13,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:59:13,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:13,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:13,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:13,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:13,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:59:13,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:13,851 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:13,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:13,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:13,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:13,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:13,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:13,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:59:13,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:13,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:13,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:13,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:13,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219064932] [2020-10-29 13:59:13,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:13,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:13,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619182253] [2020-10-29 13:59:13,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:13,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:13,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:13,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:13,917 INFO L87 Difference]: Start difference. First operand 3271 states and 4619 transitions. Second operand 5 states. [2020-10-29 13:59:15,525 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:59:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:16,734 INFO L93 Difference]: Finished difference Result 8465 states and 12039 transitions. [2020-10-29 13:59:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:16,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-29 13:59:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:16,764 INFO L225 Difference]: With dead ends: 8465 [2020-10-29 13:59:16,764 INFO L226 Difference]: Without dead ends: 6270 [2020-10-29 13:59:16,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6270 states. [2020-10-29 13:59:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6270 to 6267. [2020-10-29 13:59:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6267 states. [2020-10-29 13:59:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6267 states to 6267 states and 8723 transitions. [2020-10-29 13:59:17,356 INFO L78 Accepts]: Start accepts. Automaton has 6267 states and 8723 transitions. Word has length 110 [2020-10-29 13:59:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:17,357 INFO L481 AbstractCegarLoop]: Abstraction has 6267 states and 8723 transitions. [2020-10-29 13:59:17,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 6267 states and 8723 transitions. [2020-10-29 13:59:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 13:59:17,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:17,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:17,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:59:17,368 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:17,369 INFO L82 PathProgramCache]: Analyzing trace with hash 821966244, now seen corresponding path program 1 times [2020-10-29 13:59:17,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:17,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802598860] [2020-10-29 13:59:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:17,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:17,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:17,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:22,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:22,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 13:59:22,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:59:22,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:59:22,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:22,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 13:59:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 13:59:22,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:22,772 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:22,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:22,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:22,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:22,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:59:22,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:22,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:22,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802598860] [2020-10-29 13:59:22,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:22,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:22,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536209835] [2020-10-29 13:59:22,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:22,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:22,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:22,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:22,818 INFO L87 Difference]: Start difference. First operand 6267 states and 8723 transitions. Second operand 5 states. [2020-10-29 13:59:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:24,279 INFO L93 Difference]: Finished difference Result 10220 states and 14196 transitions. [2020-10-29 13:59:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:59:24,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-29 13:59:24,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:24,296 INFO L225 Difference]: With dead ends: 10220 [2020-10-29 13:59:24,296 INFO L226 Difference]: Without dead ends: 4057 [2020-10-29 13:59:24,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:59:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2020-10-29 13:59:24,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 4055. [2020-10-29 13:59:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4055 states. [2020-10-29 13:59:24,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4055 states to 4055 states and 5630 transitions. [2020-10-29 13:59:24,735 INFO L78 Accepts]: Start accepts. Automaton has 4055 states and 5630 transitions. Word has length 111 [2020-10-29 13:59:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:24,735 INFO L481 AbstractCegarLoop]: Abstraction has 4055 states and 5630 transitions. [2020-10-29 13:59:24,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:24,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4055 states and 5630 transitions. [2020-10-29 13:59:24,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 13:59:24,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:24,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:24,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:59:24,743 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:24,743 INFO L82 PathProgramCache]: Analyzing trace with hash 859109479, now seen corresponding path program 1 times [2020-10-29 13:59:24,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:24,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374280886] [2020-10-29 13:59:24,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:28,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:29,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:29,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 13:59:29,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:59:29,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:59:29,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:29,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 13:59:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:30,179 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:30,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:30,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:30,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:30,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:30,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:59:30,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:30,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:30,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:30,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374280886] [2020-10-29 13:59:30,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:30,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:30,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771491463] [2020-10-29 13:59:30,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:30,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:30,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:30,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:30,231 INFO L87 Difference]: Start difference. First operand 4055 states and 5630 transitions. Second operand 5 states. [2020-10-29 13:59:30,634 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 13:59:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:32,789 INFO L93 Difference]: Finished difference Result 7358 states and 10159 transitions. [2020-10-29 13:59:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:59:32,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-29 13:59:32,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:32,807 INFO L225 Difference]: With dead ends: 7358 [2020-10-29 13:59:32,807 INFO L226 Difference]: Without dead ends: 4040 [2020-10-29 13:59:32,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2020-10-29 13:59:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 4037. [2020-10-29 13:59:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4037 states. [2020-10-29 13:59:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4037 states to 4037 states and 5574 transitions. [2020-10-29 13:59:33,093 INFO L78 Accepts]: Start accepts. Automaton has 4037 states and 5574 transitions. Word has length 112 [2020-10-29 13:59:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:33,094 INFO L481 AbstractCegarLoop]: Abstraction has 4037 states and 5574 transitions. [2020-10-29 13:59:33,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:33,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4037 states and 5574 transitions. [2020-10-29 13:59:33,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 13:59:33,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:33,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:33,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:59:33,101 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:33,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:33,102 INFO L82 PathProgramCache]: Analyzing trace with hash 946396923, now seen corresponding path program 1 times [2020-10-29 13:59:33,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:33,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447750081] [2020-10-29 13:59:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:33,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:37,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:38,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:38,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 13:59:38,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:59:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:59:38,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:38,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 13:59:38,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:38,547 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:38,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:38,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:38,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:38,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:38,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:59:38,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:38,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:38,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:38,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447750081] [2020-10-29 13:59:38,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:38,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:38,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990074504] [2020-10-29 13:59:38,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:38,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:38,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:38,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:38,603 INFO L87 Difference]: Start difference. First operand 4037 states and 5574 transitions. Second operand 5 states. [2020-10-29 13:59:39,976 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:59:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:41,254 INFO L93 Difference]: Finished difference Result 11343 states and 15673 transitions. [2020-10-29 13:59:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:41,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-29 13:59:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:41,320 INFO L225 Difference]: With dead ends: 11343 [2020-10-29 13:59:41,320 INFO L226 Difference]: Without dead ends: 7764 [2020-10-29 13:59:41,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:41,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7764 states. [2020-10-29 13:59:41,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7764 to 7761. [2020-10-29 13:59:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7761 states. [2020-10-29 13:59:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7761 states to 7761 states and 10565 transitions. [2020-10-29 13:59:41,847 INFO L78 Accepts]: Start accepts. Automaton has 7761 states and 10565 transitions. Word has length 113 [2020-10-29 13:59:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:41,847 INFO L481 AbstractCegarLoop]: Abstraction has 7761 states and 10565 transitions. [2020-10-29 13:59:41,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 7761 states and 10565 transitions. [2020-10-29 13:59:41,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 13:59:41,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:41,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:41,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:59:41,859 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:41,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:41,859 INFO L82 PathProgramCache]: Analyzing trace with hash 401981955, now seen corresponding path program 1 times [2020-10-29 13:59:41,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:41,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291615712] [2020-10-29 13:59:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:41,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:41,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:41,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:42,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:42,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:42,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:46,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:46,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 13:59:46,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:59:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:59:46,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:46,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:46,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 13:59:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 13:59:46,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:47,283 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:47,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:47,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:47,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:47,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:47,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:59:47,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:47,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:47,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291615712] [2020-10-29 13:59:47,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:47,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:47,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670394130] [2020-10-29 13:59:47,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:47,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:47,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:47,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:47,326 INFO L87 Difference]: Start difference. First operand 7761 states and 10565 transitions. Second operand 5 states. [2020-10-29 13:59:48,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:48,831 INFO L93 Difference]: Finished difference Result 13412 states and 18333 transitions. [2020-10-29 13:59:48,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:59:48,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-29 13:59:48,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:48,849 INFO L225 Difference]: With dead ends: 13412 [2020-10-29 13:59:48,849 INFO L226 Difference]: Without dead ends: 6323 [2020-10-29 13:59:48,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:59:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6323 states. [2020-10-29 13:59:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6323 to 6319. [2020-10-29 13:59:49,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6319 states. [2020-10-29 13:59:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6319 states to 6319 states and 8577 transitions. [2020-10-29 13:59:49,285 INFO L78 Accepts]: Start accepts. Automaton has 6319 states and 8577 transitions. Word has length 114 [2020-10-29 13:59:49,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:49,285 INFO L481 AbstractCegarLoop]: Abstraction has 6319 states and 8577 transitions. [2020-10-29 13:59:49,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:49,285 INFO L276 IsEmpty]: Start isEmpty. Operand 6319 states and 8577 transitions. [2020-10-29 13:59:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 13:59:49,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:49,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:49,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:59:49,293 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:49,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:49,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1491725013, now seen corresponding path program 1 times [2020-10-29 13:59:49,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:49,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831516629] [2020-10-29 13:59:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:53,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:53,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:53,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:53,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:54,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 13:59:54,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:59:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:59:54,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:54,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 13:59:54,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:54,717 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:54,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:54,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:54,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:59:54,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:54,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:54,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831516629] [2020-10-29 13:59:54,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:54,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:54,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137259611] [2020-10-29 13:59:54,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:54,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:54,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:54,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:54,777 INFO L87 Difference]: Start difference. First operand 6319 states and 8577 transitions. Second operand 5 states. [2020-10-29 13:59:55,123 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 13:59:57,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:57,511 INFO L93 Difference]: Finished difference Result 10205 states and 13981 transitions. [2020-10-29 13:59:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:59:57,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-29 13:59:57,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:57,525 INFO L225 Difference]: With dead ends: 10205 [2020-10-29 13:59:57,526 INFO L226 Difference]: Without dead ends: 6322 [2020-10-29 13:59:57,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2020-10-29 13:59:57,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 6319. [2020-10-29 13:59:57,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6319 states. [2020-10-29 13:59:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6319 states to 6319 states and 8533 transitions. [2020-10-29 13:59:58,004 INFO L78 Accepts]: Start accepts. Automaton has 6319 states and 8533 transitions. Word has length 115 [2020-10-29 13:59:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:58,004 INFO L481 AbstractCegarLoop]: Abstraction has 6319 states and 8533 transitions. [2020-10-29 13:59:58,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6319 states and 8533 transitions. [2020-10-29 13:59:58,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 13:59:58,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:58,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:58,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:59:58,011 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:58,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:58,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2022587697, now seen corresponding path program 1 times [2020-10-29 13:59:58,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:58,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912291715] [2020-10-29 13:59:58,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:58,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:58,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:58,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:58,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:58,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:03,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:03,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 14:00:03,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:00:03,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:00:03,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:03,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:03,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:00:03,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:00:03,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 14:00:03,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:03,476 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:00:03,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:03,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:03,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:03,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:00:03,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:03,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:00:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:03,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912291715] [2020-10-29 14:00:03,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:03,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:00:03,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312271181] [2020-10-29 14:00:03,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:00:03,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:03,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:00:03,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:00:03,524 INFO L87 Difference]: Start difference. First operand 6319 states and 8533 transitions. Second operand 9 states. [2020-10-29 14:00:03,959 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:00:06,055 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 14:00:06,461 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:00:06,840 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 14:00:07,215 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:00:09,550 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:00:09,934 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 14:00:10,396 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 14:00:10,783 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 14:00:11,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:11,576 INFO L93 Difference]: Finished difference Result 28373 states and 41415 transitions. [2020-10-29 14:00:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 14:00:11,576 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-10-29 14:00:11,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:11,632 INFO L225 Difference]: With dead ends: 28373 [2020-10-29 14:00:11,632 INFO L226 Difference]: Without dead ends: 25067 [2020-10-29 14:00:11,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=323, Invalid=799, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 14:00:11,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25067 states. [2020-10-29 14:00:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25067 to 13048. [2020-10-29 14:00:13,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13048 states. [2020-10-29 14:00:13,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13048 states to 13048 states and 18212 transitions. [2020-10-29 14:00:13,045 INFO L78 Accepts]: Start accepts. Automaton has 13048 states and 18212 transitions. Word has length 116 [2020-10-29 14:00:13,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:13,045 INFO L481 AbstractCegarLoop]: Abstraction has 13048 states and 18212 transitions. [2020-10-29 14:00:13,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:00:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13048 states and 18212 transitions. [2020-10-29 14:00:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 14:00:13,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:13,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:13,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:00:13,054 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:13,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:13,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1290302332, now seen corresponding path program 1 times [2020-10-29 14:00:13,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:13,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708728158] [2020-10-29 14:00:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:13,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:13,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:13,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:16,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:18,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:18,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 14:00:18,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:18,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 14:00:18,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:18,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:00:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:00:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 14:00:18,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:18,539 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:00:18,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:18,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:18,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:18,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:18,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:18,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:00:18,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:18,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:18,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:00:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:18,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708728158] [2020-10-29 14:00:18,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:18,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:00:18,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000801119] [2020-10-29 14:00:18,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:00:18,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:18,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:00:18,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:00:18,628 INFO L87 Difference]: Start difference. First operand 13048 states and 18212 transitions. Second operand 9 states. [2020-10-29 14:00:19,033 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:00:20,658 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:00:21,057 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 14:00:23,364 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 14:00:23,846 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 14:00:24,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:24,835 INFO L93 Difference]: Finished difference Result 33302 states and 48706 transitions. [2020-10-29 14:00:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:00:24,836 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-10-29 14:00:24,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:24,881 INFO L225 Difference]: With dead ends: 33302 [2020-10-29 14:00:24,881 INFO L226 Difference]: Without dead ends: 23436 [2020-10-29 14:00:24,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:00:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23436 states. [2020-10-29 14:00:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23436 to 11483. [2020-10-29 14:00:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11483 states. [2020-10-29 14:00:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11483 states to 11483 states and 16057 transitions. [2020-10-29 14:00:26,184 INFO L78 Accepts]: Start accepts. Automaton has 11483 states and 16057 transitions. Word has length 116 [2020-10-29 14:00:26,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:26,184 INFO L481 AbstractCegarLoop]: Abstraction has 11483 states and 16057 transitions. [2020-10-29 14:00:26,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:00:26,185 INFO L276 IsEmpty]: Start isEmpty. Operand 11483 states and 16057 transitions. [2020-10-29 14:00:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 14:00:26,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:26,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:26,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:00:26,192 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:26,192 INFO L82 PathProgramCache]: Analyzing trace with hash -523697969, now seen corresponding path program 1 times [2020-10-29 14:00:26,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:26,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029193642] [2020-10-29 14:00:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:26,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:26,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:26,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:27,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:31,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:31,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 14:00:31,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:00:31,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 14:00:31,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:31,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:00:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:00:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 14:00:31,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:31,685 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:00:31,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:31,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:31,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:31,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:31,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:00:31,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:31,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:00:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:31,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029193642] [2020-10-29 14:00:31,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:31,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:00:31,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981486756] [2020-10-29 14:00:31,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:00:31,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:31,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:00:31,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:00:31,760 INFO L87 Difference]: Start difference. First operand 11483 states and 16057 transitions. Second operand 9 states. [2020-10-29 14:00:32,170 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:00:33,841 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:00:34,240 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 14:00:36,755 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 14:00:37,211 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 14:00:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:38,795 INFO L93 Difference]: Finished difference Result 38579 states and 56173 transitions. [2020-10-29 14:00:38,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:00:38,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-10-29 14:00:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:38,840 INFO L225 Difference]: With dead ends: 38579 [2020-10-29 14:00:38,840 INFO L226 Difference]: Without dead ends: 29164 [2020-10-29 14:00:38,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:00:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29164 states. [2020-10-29 14:00:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29164 to 17675. [2020-10-29 14:00:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17675 states. [2020-10-29 14:00:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17675 states to 17675 states and 24737 transitions. [2020-10-29 14:00:40,986 INFO L78 Accepts]: Start accepts. Automaton has 17675 states and 24737 transitions. Word has length 116 [2020-10-29 14:00:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:40,987 INFO L481 AbstractCegarLoop]: Abstraction has 17675 states and 24737 transitions. [2020-10-29 14:00:40,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:00:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 17675 states and 24737 transitions. [2020-10-29 14:00:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 14:00:41,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:41,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:41,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:00:41,001 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:41,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1398367748, now seen corresponding path program 1 times [2020-10-29 14:00:41,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:41,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8094257] [2020-10-29 14:00:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:41,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:41,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:41,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:43,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 14:00:43,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:00:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2777 [2020-10-29 14:00:43,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:43,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 14:00:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 14:00:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:44,212 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:00:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:44,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:44,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:44,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:44,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:00:44,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:44,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:44,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8094257] [2020-10-29 14:00:44,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:44,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:00:44,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300955695] [2020-10-29 14:00:44,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:00:44,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:44,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:00:44,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:00:44,249 INFO L87 Difference]: Start difference. First operand 17675 states and 24737 transitions. Second operand 4 states. [2020-10-29 14:00:47,057 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-29 14:00:49,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:49,169 INFO L93 Difference]: Finished difference Result 39649 states and 57437 transitions. [2020-10-29 14:00:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:49,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-29 14:00:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:49,203 INFO L225 Difference]: With dead ends: 39649 [2020-10-29 14:00:49,203 INFO L226 Difference]: Without dead ends: 24834 [2020-10-29 14:00:49,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:49,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24834 states. [2020-10-29 14:00:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24834 to 23739. [2020-10-29 14:00:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23739 states. [2020-10-29 14:00:52,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23739 states to 23739 states and 34225 transitions. [2020-10-29 14:00:52,211 INFO L78 Accepts]: Start accepts. Automaton has 23739 states and 34225 transitions. Word has length 116 [2020-10-29 14:00:52,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:52,211 INFO L481 AbstractCegarLoop]: Abstraction has 23739 states and 34225 transitions. [2020-10-29 14:00:52,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:00:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand 23739 states and 34225 transitions. [2020-10-29 14:00:52,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 14:00:52,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:52,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:52,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:00:52,219 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:52,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:52,220 INFO L82 PathProgramCache]: Analyzing trace with hash 323454246, now seen corresponding path program 1 times [2020-10-29 14:00:52,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:52,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076873230] [2020-10-29 14:00:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:53,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:57,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 14:00:57,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:00:57,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:00:57,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:57,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:00:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 14:00:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:57,937 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:00:57,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:57,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:57,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:57,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:00:57,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:57,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:58,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076873230] [2020-10-29 14:00:58,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:58,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 14:00:58,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482406682] [2020-10-29 14:00:58,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 14:00:58,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:58,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 14:00:58,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:00:58,005 INFO L87 Difference]: Start difference. First operand 23739 states and 34225 transitions. Second operand 11 states. [2020-10-29 14:00:58,449 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:01:00,534 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 14:01:00,929 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:01:01,322 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 14:01:01,702 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 14:01:02,068 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 14:01:02,455 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-29 14:01:02,808 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-29 14:01:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:12,542 INFO L93 Difference]: Finished difference Result 81155 states and 121801 transitions. [2020-10-29 14:01:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 14:01:12,542 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 119 [2020-10-29 14:01:12,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:12,630 INFO L225 Difference]: With dead ends: 81155 [2020-10-29 14:01:12,631 INFO L226 Difference]: Without dead ends: 65988 [2020-10-29 14:01:12,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2020-10-29 14:01:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65988 states. [2020-10-29 14:01:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65988 to 23859. [2020-10-29 14:01:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23859 states. [2020-10-29 14:01:16,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23859 states to 23859 states and 34345 transitions. [2020-10-29 14:01:16,598 INFO L78 Accepts]: Start accepts. Automaton has 23859 states and 34345 transitions. Word has length 119 [2020-10-29 14:01:16,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:16,598 INFO L481 AbstractCegarLoop]: Abstraction has 23859 states and 34345 transitions. [2020-10-29 14:01:16,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 14:01:16,598 INFO L276 IsEmpty]: Start isEmpty. Operand 23859 states and 34345 transitions. [2020-10-29 14:01:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 14:01:16,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:16,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:16,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:01:16,606 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:16,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1315491631, now seen corresponding path program 1 times [2020-10-29 14:01:16,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:16,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994573819] [2020-10-29 14:01:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:16,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:16,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:21,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:21,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 14:01:21,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:01:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:01:21,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:21,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:01:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 14:01:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 14:01:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:22,048 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:01:22,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:22,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:22,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:22,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:22,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:22,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:01:22,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:22,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:22,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:22,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:22,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:22,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994573819] [2020-10-29 14:01:22,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:22,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:01:22,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914329990] [2020-10-29 14:01:22,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:01:22,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:22,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:01:22,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:22,111 INFO L87 Difference]: Start difference. First operand 23859 states and 34345 transitions. Second operand 6 states. [2020-10-29 14:01:22,542 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 14:01:24,391 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:01:28,537 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:01:28,962 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 14:01:31,579 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 14:01:44,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:44,020 INFO L93 Difference]: Finished difference Result 131965 states and 199901 transitions. [2020-10-29 14:01:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:01:44,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-29 14:01:44,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:44,222 INFO L225 Difference]: With dead ends: 131965 [2020-10-29 14:01:44,223 INFO L226 Difference]: Without dead ends: 113926 [2020-10-29 14:01:44,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:01:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113926 states. [2020-10-29 14:01:51,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113926 to 41895. [2020-10-29 14:01:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41895 states. [2020-10-29 14:01:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41895 states to 41895 states and 61061 transitions. [2020-10-29 14:01:51,777 INFO L78 Accepts]: Start accepts. Automaton has 41895 states and 61061 transitions. Word has length 119 [2020-10-29 14:01:51,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:51,777 INFO L481 AbstractCegarLoop]: Abstraction has 41895 states and 61061 transitions. [2020-10-29 14:01:51,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:01:51,777 INFO L276 IsEmpty]: Start isEmpty. Operand 41895 states and 61061 transitions. [2020-10-29 14:01:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 14:01:51,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:51,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:51,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:01:51,786 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:51,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1290762458, now seen corresponding path program 1 times [2020-10-29 14:01:51,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:51,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928162170] [2020-10-29 14:01:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:51,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:55,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:55,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 14:01:55,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 14:01:55,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3218 [2020-10-29 14:01:55,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:55,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:55,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:55,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:01:55,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 14:01:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:55,434 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:01:55,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:55,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:55,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:55,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:55,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:55,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:01:55,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:55,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:55,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:55,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:55,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:55,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:55,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928162170] [2020-10-29 14:01:55,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:55,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:55,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485700947] [2020-10-29 14:01:55,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:55,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:55,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:55,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:55,472 INFO L87 Difference]: Start difference. First operand 41895 states and 61061 transitions. Second operand 5 states. [2020-10-29 14:02:01,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:01,379 INFO L93 Difference]: Finished difference Result 69925 states and 101654 transitions. [2020-10-29 14:02:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:02:01,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-29 14:02:01,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:01,427 INFO L225 Difference]: With dead ends: 69925 [2020-10-29 14:02:01,428 INFO L226 Difference]: Without dead ends: 28098 [2020-10-29 14:02:01,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:02:01,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28098 states. [2020-10-29 14:02:06,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28098 to 28098. [2020-10-29 14:02:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28098 states. [2020-10-29 14:02:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28098 states to 28098 states and 40679 transitions. [2020-10-29 14:02:06,311 INFO L78 Accepts]: Start accepts. Automaton has 28098 states and 40679 transitions. Word has length 119 [2020-10-29 14:02:06,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:06,311 INFO L481 AbstractCegarLoop]: Abstraction has 28098 states and 40679 transitions. [2020-10-29 14:02:06,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:06,312 INFO L276 IsEmpty]: Start isEmpty. Operand 28098 states and 40679 transitions. [2020-10-29 14:02:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 14:02:06,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:06,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:06,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 14:02:06,317 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:06,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:06,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2141919559, now seen corresponding path program 1 times [2020-10-29 14:02:06,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:06,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478659501] [2020-10-29 14:02:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:07,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:11,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:11,794 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:02:11,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:11,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:11,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:11,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:02:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:11,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:11,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478659501] [2020-10-29 14:02:11,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:11,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:11,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037454335] [2020-10-29 14:02:11,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:11,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:11,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:11,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:11,837 INFO L87 Difference]: Start difference. First operand 28098 states and 40679 transitions. Second operand 5 states. [2020-10-29 14:02:12,214 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 203