/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:57:34,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:57:34,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:57:34,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:57:34,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:57:34,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:57:34,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:57:34,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:57:34,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:57:34,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:57:34,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:57:34,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:57:34,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:57:34,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:57:34,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:57:34,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:57:34,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:57:34,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:57:34,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:57:34,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:57:34,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:57:34,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:57:34,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:57:34,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:57:34,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:57:34,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:57:34,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:57:34,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:57:34,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:57:34,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:57:34,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:57:34,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:57:34,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:57:34,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:57:34,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:57:34,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:57:34,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:57:34,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:57:34,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:57:34,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:57:34,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:57:34,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 10:57:34,730 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:57:34,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:57:34,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:57:34,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:57:34,733 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:57:34,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:57:34,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:57:34,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:57:34,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:57:34,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:57:34,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:57:34,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:57:34,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:57:34,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:57:34,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:57:34,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:57:34,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:57:34,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:57:34,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:57:34,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:57:34,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:57:34,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:57:34,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:57:34,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:57:34,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:57:34,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:57:34,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:57:34,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:57:34,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:57:34,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:57:35,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:57:35,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:57:35,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:57:35,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:57:35,160 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:57:35,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label12.c [2020-10-28 10:57:35,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/408939fb8/087735d1ed9343a19150b15080538fd4/FLAGe84279dfc [2020-10-28 10:57:36,490 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:57:36,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label12.c [2020-10-28 10:57:36,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/408939fb8/087735d1ed9343a19150b15080538fd4/FLAGe84279dfc [2020-10-28 10:57:36,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/408939fb8/087735d1ed9343a19150b15080538fd4 [2020-10-28 10:57:36,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:57:36,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:57:36,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:57:36,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:57:36,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:57:36,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:57:36" (1/1) ... [2020-10-28 10:57:36,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac6e77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:36, skipping insertion in model container [2020-10-28 10:57:36,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:57:36" (1/1) ... [2020-10-28 10:57:36,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:57:36,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:57:39,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:57:39,329 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:57:40,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:57:40,514 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:57:40,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:40 WrapperNode [2020-10-28 10:57:40,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:57:40,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:57:40,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:57:40,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:57:40,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:40" (1/1) ... [2020-10-28 10:57:40,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:40" (1/1) ... [2020-10-28 10:57:40,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:40" (1/1) ... [2020-10-28 10:57:40,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:40" (1/1) ... [2020-10-28 10:57:40,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:40" (1/1) ... [2020-10-28 10:57:40,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:40" (1/1) ... [2020-10-28 10:57:40,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:40" (1/1) ... [2020-10-28 10:57:40,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:57:40,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:57:40,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:57:41,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:57:41,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:57:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:57:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:57:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:57:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:57:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:57:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:57:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:57:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:57:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:57:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:57:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:57:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:57:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:57:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:57:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:57:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:57:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:57:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:57:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:57:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:57:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:57:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:57:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:57:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:57:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:57:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:57:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:57:49,150 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:57:49,151 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:57:49,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:57:49 BoogieIcfgContainer [2020-10-28 10:57:49,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:57:49,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:57:49,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:57:49,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:57:49,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:57:36" (1/3) ... [2020-10-28 10:57:49,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f418ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:57:49, skipping insertion in model container [2020-10-28 10:57:49,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:40" (2/3) ... [2020-10-28 10:57:49,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f418ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:57:49, skipping insertion in model container [2020-10-28 10:57:49,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:57:49" (3/3) ... [2020-10-28 10:57:49,165 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label12.c [2020-10-28 10:57:49,177 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:57:49,184 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:57:49,196 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:57:49,238 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:57:49,238 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:57:49,238 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:57:49,238 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:57:49,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:57:49,239 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:57:49,239 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:57:49,239 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:57:49,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-28 10:57:49,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2020-10-28 10:57:49,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:57:49,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:57:49,347 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:57:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:57:49,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1438978004, now seen corresponding path program 1 times [2020-10-28 10:57:49,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:57:49,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356153444] [2020-10-28 10:57:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:57:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:57:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:57:52,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:57:55,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:57:55,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 963 [2020-10-28 10:57:55,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:57:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5237 [2020-10-28 10:57:55,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:57:55,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:57:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 10:57:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:57:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 954 [2020-10-28 10:57:55,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:57:57,337 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:57:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:57:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:57:57,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:57:57,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:57:57,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:57:57,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:57:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:57:57,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:57:57,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:57:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:57:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:57:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:57:57,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:57:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:57:58,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356153444] [2020-10-28 10:57:58,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:57:58,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:57:58,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679648733] [2020-10-28 10:57:58,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:57:58,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:57:58,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:57:58,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:57:58,573 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 5 states. [2020-10-28 10:57:58,821 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:57:59,203 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:58:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:58:23,819 INFO L93 Difference]: Finished difference Result 4885 states and 9214 transitions. [2020-10-28 10:58:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:58:23,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 945 [2020-10-28 10:58:23,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:58:23,887 INFO L225 Difference]: With dead ends: 4885 [2020-10-28 10:58:23,887 INFO L226 Difference]: Without dead ends: 3498 [2020-10-28 10:58:23,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:58:23,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2020-10-28 10:58:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 3404. [2020-10-28 10:58:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2020-10-28 10:58:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 5931 transitions. [2020-10-28 10:58:24,168 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 5931 transitions. Word has length 945 [2020-10-28 10:58:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:58:24,172 INFO L481 AbstractCegarLoop]: Abstraction has 3404 states and 5931 transitions. [2020-10-28 10:58:24,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:58:24,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 5931 transitions. [2020-10-28 10:58:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2020-10-28 10:58:24,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:58:24,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:58:24,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:58:24,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:58:24,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:58:24,219 INFO L82 PathProgramCache]: Analyzing trace with hash 73849803, now seen corresponding path program 1 times [2020-10-28 10:58:24,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:58:24,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010463888] [2020-10-28 10:58:24,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:58:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:58:24,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:26,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:29,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:58:29,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 973 [2020-10-28 10:58:29,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:58:29,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-28 10:58:29,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:58:29,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:58:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:58:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:58:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:58:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:58:29,901 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:58:29,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:58:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:58:29,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:29,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:58:29,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:58:29,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:58:29,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:58:29,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:58:29,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:58:29,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:58:29,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:58:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:58:29,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:58:30,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:58:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:58:30,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:30,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:58:30,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:58:30,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:58:30,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:58:30,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:58:30,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:58:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:58:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:58:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 10:58:30,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:58:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:58:30,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010463888] [2020-10-28 10:58:30,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:58:30,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:58:30,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673198884] [2020-10-28 10:58:30,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:58:30,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:58:30,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:58:30,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:58:30,834 INFO L87 Difference]: Start difference. First operand 3404 states and 5931 transitions. Second operand 7 states. [2020-10-28 10:58:31,093 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:58:52,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:58:52,732 INFO L93 Difference]: Finished difference Result 10267 states and 18023 transitions. [2020-10-28 10:58:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:58:52,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 953 [2020-10-28 10:58:52,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:58:52,775 INFO L225 Difference]: With dead ends: 10267 [2020-10-28 10:58:52,775 INFO L226 Difference]: Without dead ends: 6869 [2020-10-28 10:58:52,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 10:58:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6869 states. [2020-10-28 10:58:53,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6869 to 6827. [2020-10-28 10:58:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6827 states. [2020-10-28 10:58:53,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6827 states to 6827 states and 11952 transitions. [2020-10-28 10:58:53,040 INFO L78 Accepts]: Start accepts. Automaton has 6827 states and 11952 transitions. Word has length 953 [2020-10-28 10:58:53,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:58:53,040 INFO L481 AbstractCegarLoop]: Abstraction has 6827 states and 11952 transitions. [2020-10-28 10:58:53,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:58:53,041 INFO L276 IsEmpty]: Start isEmpty. Operand 6827 states and 11952 transitions. [2020-10-28 10:58:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2020-10-28 10:58:53,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:58:53,072 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:58:53,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:58:53,072 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:58:53,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:58:53,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1172787102, now seen corresponding path program 1 times [2020-10-28 10:58:53,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:58:53,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78128477] [2020-10-28 10:58:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:58:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:58:53,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:55,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:58,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:58:58,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 980 [2020-10-28 10:58:58,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:58:58,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5270 [2020-10-28 10:58:58,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:58:58,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:58:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:58:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:58:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:58:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:58:58,918 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:58:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:58:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:58:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:58,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:58:58,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:58:58,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:58:58,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:58:58,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:58:58,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:58:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:58:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:58:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:58:58,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:58:59,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:58:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:58:59,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:59,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:58:59,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:58:59,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:58:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 10:58:59,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:58:59,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:58:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:58:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:58:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:58:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:58:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:58:59,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78128477] [2020-10-28 10:58:59,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:58:59,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:58:59,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684331893] [2020-10-28 10:58:59,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:58:59,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:58:59,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:58:59,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:58:59,768 INFO L87 Difference]: Start difference. First operand 6827 states and 11952 transitions. Second operand 7 states. [2020-10-28 10:59:00,034 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:59:01,041 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:59:20,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:59:20,634 INFO L93 Difference]: Finished difference Result 20426 states and 36679 transitions. [2020-10-28 10:59:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:59:20,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 960 [2020-10-28 10:59:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:59:20,726 INFO L225 Difference]: With dead ends: 20426 [2020-10-28 10:59:20,727 INFO L226 Difference]: Without dead ends: 13605 [2020-10-28 10:59:20,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:59:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13605 states. [2020-10-28 10:59:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13605 to 13389. [2020-10-28 10:59:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13389 states. [2020-10-28 10:59:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13389 states to 13389 states and 21718 transitions. [2020-10-28 10:59:21,212 INFO L78 Accepts]: Start accepts. Automaton has 13389 states and 21718 transitions. Word has length 960 [2020-10-28 10:59:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:59:21,218 INFO L481 AbstractCegarLoop]: Abstraction has 13389 states and 21718 transitions. [2020-10-28 10:59:21,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:59:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 13389 states and 21718 transitions. [2020-10-28 10:59:21,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2020-10-28 10:59:21,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:59:21,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:59:21,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:59:21,275 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:59:21,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:59:21,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1144741798, now seen corresponding path program 1 times [2020-10-28 10:59:21,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:59:21,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896724063] [2020-10-28 10:59:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:59:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:23,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:26,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:26,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 993 [2020-10-28 10:59:26,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:59:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5188 [2020-10-28 10:59:26,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:26,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:59:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:59:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 10:59:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:27,125 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:59:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:59:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:27,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:27,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:59:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:59:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:59:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:27,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:59:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:59:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:59:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:27,269 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:59:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:59:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:27,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:27,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:59:27,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:59:27,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 10:59:27,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:27,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:27,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:59:27,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:59:27,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 10:59:27,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:59:27,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896724063] [2020-10-28 10:59:27,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:59:27,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:59:27,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91968367] [2020-10-28 10:59:27,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:59:27,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:59:27,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:59:27,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:59:27,855 INFO L87 Difference]: Start difference. First operand 13389 states and 21718 transitions. Second operand 7 states. [2020-10-28 10:59:28,137 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:59:29,323 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:59:48,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:59:48,507 INFO L93 Difference]: Finished difference Result 40622 states and 69200 transitions. [2020-10-28 10:59:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:59:48,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 973 [2020-10-28 10:59:48,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:59:48,632 INFO L225 Difference]: With dead ends: 40622 [2020-10-28 10:59:48,632 INFO L226 Difference]: Without dead ends: 27239 [2020-10-28 10:59:48,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:59:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27239 states. [2020-10-28 10:59:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27239 to 26934. [2020-10-28 10:59:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26934 states. [2020-10-28 10:59:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26934 states to 26934 states and 41823 transitions. [2020-10-28 10:59:49,676 INFO L78 Accepts]: Start accepts. Automaton has 26934 states and 41823 transitions. Word has length 973 [2020-10-28 10:59:49,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:59:49,677 INFO L481 AbstractCegarLoop]: Abstraction has 26934 states and 41823 transitions. [2020-10-28 10:59:49,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:59:49,677 INFO L276 IsEmpty]: Start isEmpty. Operand 26934 states and 41823 transitions. [2020-10-28 10:59:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2020-10-28 10:59:49,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:59:49,789 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:59:49,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:59:49,790 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:59:49,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:59:49,791 INFO L82 PathProgramCache]: Analyzing trace with hash 37830202, now seen corresponding path program 1 times [2020-10-28 10:59:49,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:59:49,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823410869] [2020-10-28 10:59:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:59:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:54,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:54,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-28 10:59:54,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:59:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 10:59:54,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:54,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:59:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:59:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:59:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:55,318 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:59:55,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:59:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:55,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:55,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:55,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:59:55,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:59:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:59:55,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:55,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:59:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:59:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:59:55,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:55,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:59:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:55,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:55,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 10:59:55,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:59:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 10:59:55,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:55,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:59:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:59:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 10:59:55,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:59:56,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823410869] [2020-10-28 10:59:56,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:59:56,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:59:56,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432430310] [2020-10-28 10:59:56,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:59:56,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:59:56,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:59:56,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:59:56,013 INFO L87 Difference]: Start difference. First operand 26934 states and 41823 transitions. Second operand 7 states. [2020-10-28 10:59:56,276 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:59:56,825 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 11:00:16,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:00:16,076 INFO L93 Difference]: Finished difference Result 81674 states and 135699 transitions. [2020-10-28 11:00:16,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 11:00:16,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 974 [2020-10-28 11:00:16,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:00:16,340 INFO L225 Difference]: With dead ends: 81674 [2020-10-28 11:00:16,340 INFO L226 Difference]: Without dead ends: 54746 [2020-10-28 11:00:16,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 11:00:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54746 states. [2020-10-28 11:00:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54746 to 54021. [2020-10-28 11:00:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54021 states. [2020-10-28 11:00:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54021 states to 54021 states and 84366 transitions. [2020-10-28 11:00:18,404 INFO L78 Accepts]: Start accepts. Automaton has 54021 states and 84366 transitions. Word has length 974 [2020-10-28 11:00:18,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:00:18,404 INFO L481 AbstractCegarLoop]: Abstraction has 54021 states and 84366 transitions. [2020-10-28 11:00:18,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:00:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 54021 states and 84366 transitions. [2020-10-28 11:00:18,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2020-10-28 11:00:18,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:00:18,566 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:00:18,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 11:00:18,567 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:00:18,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:00:18,568 INFO L82 PathProgramCache]: Analyzing trace with hash 997067304, now seen corresponding path program 1 times [2020-10-28 11:00:18,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:00:18,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613346941] [2020-10-28 11:00:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:00:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:20,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:23,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:23,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1054 [2020-10-28 11:00:23,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 11:00:23,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-28 11:00:23,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:23,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 11:00:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 11:00:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 11:00:23,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:24,242 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:00:24,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:00:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:24,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:24,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:00:24,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:00:24,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 11:00:24,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:24,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:00:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:00:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:00:24,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:24,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:00:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:24,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:24,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 11:00:24,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:00:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 11:00:24,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:24,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:24,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:00:24,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:00:24,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 11:00:24,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:24,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 11:00:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:24,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:24,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 11:00:24,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:00:24,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 11:00:24,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:24,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:00:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:00:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 11:00:24,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:24,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 11:00:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:24,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:24,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:24,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 11:00:24,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:00:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 11:00:24,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:24,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:00:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 11:00:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:00:24,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:24,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 11:00:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:24,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:24,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:24,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 11:00:24,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:00:24,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 11:00:24,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:24,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:00:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 11:00:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:00:24,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-28 11:00:25,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613346941] [2020-10-28 11:00:25,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 11:00:25,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 11:00:25,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498208071] [2020-10-28 11:00:25,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:00:25,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:00:25,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:00:25,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:00:25,340 INFO L87 Difference]: Start difference. First operand 54021 states and 84366 transitions. Second operand 7 states. [2020-10-28 11:00:25,618 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 11:00:26,077 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 11:00:26,986 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 11:01:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:01:08,892 INFO L93 Difference]: Finished difference Result 265477 states and 487382 transitions. [2020-10-28 11:01:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 11:01:08,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1028 [2020-10-28 11:01:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted.