/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:21:19,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:21:19,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:21:19,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:21:19,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:21:19,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:21:19,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:21:19,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:21:19,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:21:19,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:21:19,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:21:19,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:21:19,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:21:19,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:21:19,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:21:19,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:21:19,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:21:19,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:21:19,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:21:19,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:21:19,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:21:19,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:21:19,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:21:19,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:21:19,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:21:19,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:21:19,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:21:19,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:21:19,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:21:19,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:21:19,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:21:19,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:21:19,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:21:19,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:21:19,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:21:19,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:21:19,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:21:19,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:21:19,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:21:19,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:21:19,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:21:19,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:21:19,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:21:19,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:21:19,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:21:19,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:21:19,317 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:21:19,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:21:19,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:21:19,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:21:19,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:21:19,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:21:19,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:21:19,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:21:19,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:21:19,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:21:19,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:21:19,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:21:19,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:21:19,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:21:19,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:21:19,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:21:19,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:21:19,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:21:19,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:21:19,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:21:19,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:21:19,321 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:21:19,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:21:19,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:21:19,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:21:19,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:21:19,710 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:21:19,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 08:21:19,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6c099cbd/1056c0f176c74042827fc4ef0e9e0912/FLAG334fa1652 [2020-12-22 08:21:20,647 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:21:20,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 08:21:20,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6c099cbd/1056c0f176c74042827fc4ef0e9e0912/FLAG334fa1652 [2020-12-22 08:21:20,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6c099cbd/1056c0f176c74042827fc4ef0e9e0912 [2020-12-22 08:21:20,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:21:20,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:21:20,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:21:20,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:21:20,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:21:20,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:21:20" (1/1) ... [2020-12-22 08:21:20,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61849c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:20, skipping insertion in model container [2020-12-22 08:21:20,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:21:20" (1/1) ... [2020-12-22 08:21:20,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:21:20,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:21:21,377 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12056,12069] [2020-12-22 08:21:21,430 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19342,19355] [2020-12-22 08:21:21,448 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21694,21707] [2020-12-22 08:21:21,458 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22814,22827] [2020-12-22 08:21:21,484 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26364,26377] [2020-12-22 08:21:21,497 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27487,27500] [2020-12-22 08:21:21,524 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[29802,29815] [2020-12-22 08:21:22,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:21:22,121 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:21:22,240 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12056,12069] [2020-12-22 08:21:22,301 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19342,19355] [2020-12-22 08:21:22,310 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21694,21707] [2020-12-22 08:21:22,316 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22814,22827] [2020-12-22 08:21:22,329 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26364,26377] [2020-12-22 08:21:22,334 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27487,27500] [2020-12-22 08:21:22,342 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[29802,29815] [2020-12-22 08:21:22,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:21:22,793 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:21:22,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22 WrapperNode [2020-12-22 08:21:22,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:21:22,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:21:22,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:21:22,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:21:22,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22" (1/1) ... [2020-12-22 08:21:22,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22" (1/1) ... [2020-12-22 08:21:23,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:21:23,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:21:23,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:21:23,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:21:23,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22" (1/1) ... [2020-12-22 08:21:23,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22" (1/1) ... [2020-12-22 08:21:23,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22" (1/1) ... [2020-12-22 08:21:23,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22" (1/1) ... [2020-12-22 08:21:23,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22" (1/1) ... [2020-12-22 08:21:23,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22" (1/1) ... [2020-12-22 08:21:23,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22" (1/1) ... [2020-12-22 08:21:23,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:21:23,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:21:23,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:21:23,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:21:23,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 08:21:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:21:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:21:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:21:23,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:21:27,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:21:27,036 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:21:27,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:21:27 BoogieIcfgContainer [2020-12-22 08:21:27,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:21:27,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:21:27,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:21:27,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:21:27,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:21:20" (1/3) ... [2020-12-22 08:21:27,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3610813e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:21:27, skipping insertion in model container [2020-12-22 08:21:27,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:21:22" (2/3) ... [2020-12-22 08:21:27,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3610813e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:21:27, skipping insertion in model container [2020-12-22 08:21:27,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:21:27" (3/3) ... [2020-12-22 08:21:27,049 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 08:21:27,056 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:21:27,061 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 08:21:27,081 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 08:21:27,117 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:21:27,118 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:21:27,118 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:21:27,118 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:21:27,118 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:21:27,118 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:21:27,118 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:21:27,119 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:21:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states. [2020-12-22 08:21:27,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:21:27,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:27,192 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] [2020-12-22 08:21:27,192 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:27,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:27,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1160265217, now seen corresponding path program 1 times [2020-12-22 08:21:27,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:27,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820860480] [2020-12-22 08:21:27,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:27,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820860480] [2020-12-22 08:21:27,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:27,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:27,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304077234] [2020-12-22 08:21:27,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:27,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:27,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:27,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:27,743 INFO L87 Difference]: Start difference. First operand 1106 states. Second operand 3 states. [2020-12-22 08:21:28,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:28,098 INFO L93 Difference]: Finished difference Result 1465 states and 2651 transitions. [2020-12-22 08:21:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:28,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:21:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:28,156 INFO L225 Difference]: With dead ends: 1465 [2020-12-22 08:21:28,156 INFO L226 Difference]: Without dead ends: 1288 [2020-12-22 08:21:28,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2020-12-22 08:21:28,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1280. [2020-12-22 08:21:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-12-22 08:21:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1676 transitions. [2020-12-22 08:21:28,303 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1676 transitions. Word has length 64 [2020-12-22 08:21:28,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:28,304 INFO L481 AbstractCegarLoop]: Abstraction has 1280 states and 1676 transitions. [2020-12-22 08:21:28,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1676 transitions. [2020-12-22 08:21:28,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:21:28,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:28,311 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] [2020-12-22 08:21:28,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:21:28,312 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:28,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1978887998, now seen corresponding path program 1 times [2020-12-22 08:21:28,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:28,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315043653] [2020-12-22 08:21:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:28,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315043653] [2020-12-22 08:21:28,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:28,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:28,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477096495] [2020-12-22 08:21:28,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:28,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:28,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:28,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:28,624 INFO L87 Difference]: Start difference. First operand 1280 states and 1676 transitions. Second operand 3 states. [2020-12-22 08:21:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:28,768 INFO L93 Difference]: Finished difference Result 1930 states and 2622 transitions. [2020-12-22 08:21:28,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:28,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:21:28,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:28,781 INFO L225 Difference]: With dead ends: 1930 [2020-12-22 08:21:28,781 INFO L226 Difference]: Without dead ends: 1576 [2020-12-22 08:21:28,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-12-22 08:21:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1568. [2020-12-22 08:21:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-12-22 08:21:28,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2092 transitions. [2020-12-22 08:21:28,848 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2092 transitions. Word has length 64 [2020-12-22 08:21:28,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:28,849 INFO L481 AbstractCegarLoop]: Abstraction has 1568 states and 2092 transitions. [2020-12-22 08:21:28,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:28,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2092 transitions. [2020-12-22 08:21:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:21:28,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:28,854 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] [2020-12-22 08:21:28,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:21:28,854 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:28,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:28,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1566940908, now seen corresponding path program 1 times [2020-12-22 08:21:28,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:28,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548550026] [2020-12-22 08:21:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:28,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548550026] [2020-12-22 08:21:28,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:28,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:21:28,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511010993] [2020-12-22 08:21:28,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:21:28,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:28,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:21:28,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:21:28,994 INFO L87 Difference]: Start difference. First operand 1568 states and 2092 transitions. Second operand 5 states. [2020-12-22 08:21:29,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:29,881 INFO L93 Difference]: Finished difference Result 3046 states and 4188 transitions. [2020-12-22 08:21:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:21:29,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 08:21:29,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:29,892 INFO L225 Difference]: With dead ends: 3046 [2020-12-22 08:21:29,893 INFO L226 Difference]: Without dead ends: 1787 [2020-12-22 08:21:29,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:21:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-12-22 08:21:30,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1779. [2020-12-22 08:21:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2020-12-22 08:21:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2459 transitions. [2020-12-22 08:21:30,033 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2459 transitions. Word has length 64 [2020-12-22 08:21:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:30,034 INFO L481 AbstractCegarLoop]: Abstraction has 1779 states and 2459 transitions. [2020-12-22 08:21:30,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:21:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2459 transitions. [2020-12-22 08:21:30,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:21:30,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:30,038 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] [2020-12-22 08:21:30,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:21:30,039 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:30,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1913482263, now seen corresponding path program 1 times [2020-12-22 08:21:30,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:30,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220960497] [2020-12-22 08:21:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:30,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220960497] [2020-12-22 08:21:30,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:30,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:30,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897415018] [2020-12-22 08:21:30,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:30,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:30,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:30,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:30,126 INFO L87 Difference]: Start difference. First operand 1779 states and 2459 transitions. Second operand 3 states. [2020-12-22 08:21:30,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:30,272 INFO L93 Difference]: Finished difference Result 4129 states and 5823 transitions. [2020-12-22 08:21:30,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:30,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 08:21:30,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:30,289 INFO L225 Difference]: With dead ends: 4129 [2020-12-22 08:21:30,290 INFO L226 Difference]: Without dead ends: 2953 [2020-12-22 08:21:30,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-12-22 08:21:30,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 2941. [2020-12-22 08:21:30,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2941 states. [2020-12-22 08:21:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 4077 transitions. [2020-12-22 08:21:30,452 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 4077 transitions. Word has length 65 [2020-12-22 08:21:30,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:30,452 INFO L481 AbstractCegarLoop]: Abstraction has 2941 states and 4077 transitions. [2020-12-22 08:21:30,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:30,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 4077 transitions. [2020-12-22 08:21:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:21:30,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:30,458 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] [2020-12-22 08:21:30,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:21:30,458 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:30,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:30,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1759204869, now seen corresponding path program 1 times [2020-12-22 08:21:30,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:30,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980828342] [2020-12-22 08:21:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:30,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980828342] [2020-12-22 08:21:30,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:30,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:21:30,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244020871] [2020-12-22 08:21:30,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:21:30,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:30,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:21:30,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:21:30,637 INFO L87 Difference]: Start difference. First operand 2941 states and 4077 transitions. Second operand 6 states. [2020-12-22 08:21:31,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:31,651 INFO L93 Difference]: Finished difference Result 8182 states and 11592 transitions. [2020-12-22 08:21:31,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:21:31,652 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 08:21:31,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:31,680 INFO L225 Difference]: With dead ends: 8182 [2020-12-22 08:21:31,680 INFO L226 Difference]: Without dead ends: 5567 [2020-12-22 08:21:31,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:21:31,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2020-12-22 08:21:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 5551. [2020-12-22 08:21:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5551 states. [2020-12-22 08:21:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 7869 transitions. [2020-12-22 08:21:31,987 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 7869 transitions. Word has length 65 [2020-12-22 08:21:31,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:31,988 INFO L481 AbstractCegarLoop]: Abstraction has 5551 states and 7869 transitions. [2020-12-22 08:21:31,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:21:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 7869 transitions. [2020-12-22 08:21:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:21:31,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:31,995 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] [2020-12-22 08:21:31,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:21:31,995 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:31,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:31,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1314526104, now seen corresponding path program 1 times [2020-12-22 08:21:31,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:31,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203918503] [2020-12-22 08:21:31,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:32,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203918503] [2020-12-22 08:21:32,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:32,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:32,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640859656] [2020-12-22 08:21:32,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:32,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:32,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:32,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:32,074 INFO L87 Difference]: Start difference. First operand 5551 states and 7869 transitions. Second operand 3 states. [2020-12-22 08:21:32,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:32,533 INFO L93 Difference]: Finished difference Result 12472 states and 17852 transitions. [2020-12-22 08:21:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:32,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:21:32,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:32,573 INFO L225 Difference]: With dead ends: 12472 [2020-12-22 08:21:32,573 INFO L226 Difference]: Without dead ends: 8069 [2020-12-22 08:21:32,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:32,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8069 states. [2020-12-22 08:21:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8069 to 8029. [2020-12-22 08:21:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8029 states. [2020-12-22 08:21:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8029 states to 8029 states and 11303 transitions. [2020-12-22 08:21:33,014 INFO L78 Accepts]: Start accepts. Automaton has 8029 states and 11303 transitions. Word has length 66 [2020-12-22 08:21:33,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:33,016 INFO L481 AbstractCegarLoop]: Abstraction has 8029 states and 11303 transitions. [2020-12-22 08:21:33,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 8029 states and 11303 transitions. [2020-12-22 08:21:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:21:33,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:33,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:21:33,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:21:33,031 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:33,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1742777677, now seen corresponding path program 1 times [2020-12-22 08:21:33,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:33,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400656377] [2020-12-22 08:21:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:33,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400656377] [2020-12-22 08:21:33,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:33,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:21:33,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995651475] [2020-12-22 08:21:33,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:21:33,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:33,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:21:33,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:21:33,191 INFO L87 Difference]: Start difference. First operand 8029 states and 11303 transitions. Second operand 6 states. [2020-12-22 08:21:34,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:34,835 INFO L93 Difference]: Finished difference Result 23361 states and 33165 transitions. [2020-12-22 08:21:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:21:34,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:21:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:34,890 INFO L225 Difference]: With dead ends: 23361 [2020-12-22 08:21:34,891 INFO L226 Difference]: Without dead ends: 15823 [2020-12-22 08:21:34,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:21:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15823 states. [2020-12-22 08:21:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15823 to 15727. [2020-12-22 08:21:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15727 states. [2020-12-22 08:21:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15727 states to 15727 states and 22283 transitions. [2020-12-22 08:21:35,789 INFO L78 Accepts]: Start accepts. Automaton has 15727 states and 22283 transitions. Word has length 66 [2020-12-22 08:21:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:35,790 INFO L481 AbstractCegarLoop]: Abstraction has 15727 states and 22283 transitions. [2020-12-22 08:21:35,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:21:35,790 INFO L276 IsEmpty]: Start isEmpty. Operand 15727 states and 22283 transitions. [2020-12-22 08:21:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:21:35,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:35,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:21:35,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:21:35,801 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:35,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:35,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1028195784, now seen corresponding path program 1 times [2020-12-22 08:21:35,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:35,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072116983] [2020-12-22 08:21:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:35,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072116983] [2020-12-22 08:21:35,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:35,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:21:35,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317513417] [2020-12-22 08:21:35,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:21:35,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:35,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:21:35,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:21:35,913 INFO L87 Difference]: Start difference. First operand 15727 states and 22283 transitions. Second operand 6 states. [2020-12-22 08:21:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:38,198 INFO L93 Difference]: Finished difference Result 48547 states and 68941 transitions. [2020-12-22 08:21:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:21:38,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 08:21:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:38,310 INFO L225 Difference]: With dead ends: 48547 [2020-12-22 08:21:38,310 INFO L226 Difference]: Without dead ends: 33311 [2020-12-22 08:21:38,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:21:38,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33311 states. [2020-12-22 08:21:40,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33311 to 33095. [2020-12-22 08:21:40,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33095 states. [2020-12-22 08:21:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33095 states to 33095 states and 46821 transitions. [2020-12-22 08:21:40,713 INFO L78 Accepts]: Start accepts. Automaton has 33095 states and 46821 transitions. Word has length 67 [2020-12-22 08:21:40,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:40,714 INFO L481 AbstractCegarLoop]: Abstraction has 33095 states and 46821 transitions. [2020-12-22 08:21:40,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:21:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 33095 states and 46821 transitions. [2020-12-22 08:21:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:21:40,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:40,728 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] [2020-12-22 08:21:40,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:21:40,729 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:40,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:40,730 INFO L82 PathProgramCache]: Analyzing trace with hash 185593086, now seen corresponding path program 1 times [2020-12-22 08:21:40,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:40,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598953525] [2020-12-22 08:21:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:40,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598953525] [2020-12-22 08:21:40,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:40,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:21:40,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558392349] [2020-12-22 08:21:40,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:21:40,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:40,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:21:40,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:21:40,905 INFO L87 Difference]: Start difference. First operand 33095 states and 46821 transitions. Second operand 7 states. [2020-12-22 08:21:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:50,293 INFO L93 Difference]: Finished difference Result 194687 states and 277808 transitions. [2020-12-22 08:21:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:21:50,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-12-22 08:21:50,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:51,055 INFO L225 Difference]: With dead ends: 194687 [2020-12-22 08:21:51,055 INFO L226 Difference]: Without dead ends: 180262 [2020-12-22 08:21:51,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:21:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180262 states. [2020-12-22 08:21:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180262 to 33163. [2020-12-22 08:21:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33163 states. [2020-12-22 08:21:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33163 states to 33163 states and 46909 transitions. [2020-12-22 08:21:55,541 INFO L78 Accepts]: Start accepts. Automaton has 33163 states and 46909 transitions. Word has length 68 [2020-12-22 08:21:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:55,541 INFO L481 AbstractCegarLoop]: Abstraction has 33163 states and 46909 transitions. [2020-12-22 08:21:55,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:21:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 33163 states and 46909 transitions. [2020-12-22 08:21:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:21:55,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:55,557 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] [2020-12-22 08:21:55,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:21:55,557 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:55,558 INFO L82 PathProgramCache]: Analyzing trace with hash 290423248, now seen corresponding path program 1 times [2020-12-22 08:21:55,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:55,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385542515] [2020-12-22 08:21:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:55,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385542515] [2020-12-22 08:21:55,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:55,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:21:55,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757679354] [2020-12-22 08:21:55,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:21:55,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:55,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:21:55,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:21:55,682 INFO L87 Difference]: Start difference. First operand 33163 states and 46909 transitions. Second operand 7 states. [2020-12-22 08:22:07,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:07,836 INFO L93 Difference]: Finished difference Result 161149 states and 229258 transitions. [2020-12-22 08:22:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:22:07,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-12-22 08:22:07,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:08,172 INFO L225 Difference]: With dead ends: 161149 [2020-12-22 08:22:08,172 INFO L226 Difference]: Without dead ends: 144302 [2020-12-22 08:22:08,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:22:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144302 states. [2020-12-22 08:22:12,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144302 to 33319. [2020-12-22 08:22:12,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33319 states. [2020-12-22 08:22:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33319 states to 33319 states and 47115 transitions. [2020-12-22 08:22:12,269 INFO L78 Accepts]: Start accepts. Automaton has 33319 states and 47115 transitions. Word has length 68 [2020-12-22 08:22:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:12,269 INFO L481 AbstractCegarLoop]: Abstraction has 33319 states and 47115 transitions. [2020-12-22 08:22:12,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:22:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 33319 states and 47115 transitions. [2020-12-22 08:22:12,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:22:12,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:12,280 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] [2020-12-22 08:22:12,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:22:12,280 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:12,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:12,281 INFO L82 PathProgramCache]: Analyzing trace with hash -770234336, now seen corresponding path program 1 times [2020-12-22 08:22:12,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:12,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233149191] [2020-12-22 08:22:12,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:12,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233149191] [2020-12-22 08:22:12,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:12,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:22:12,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109667938] [2020-12-22 08:22:12,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:22:12,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:12,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:22:12,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:22:12,390 INFO L87 Difference]: Start difference. First operand 33319 states and 47115 transitions. Second operand 7 states. [2020-12-22 08:22:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:25,625 INFO L93 Difference]: Finished difference Result 141113 states and 200122 transitions. [2020-12-22 08:22:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:22:25,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-12-22 08:22:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:25,990 INFO L225 Difference]: With dead ends: 141113 [2020-12-22 08:22:25,991 INFO L226 Difference]: Without dead ends: 124698 [2020-12-22 08:22:26,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:22:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124698 states. [2020-12-22 08:22:30,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124698 to 33407. [2020-12-22 08:22:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33407 states. [2020-12-22 08:22:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33407 states to 33407 states and 47236 transitions. [2020-12-22 08:22:30,147 INFO L78 Accepts]: Start accepts. Automaton has 33407 states and 47236 transitions. Word has length 68 [2020-12-22 08:22:30,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:30,148 INFO L481 AbstractCegarLoop]: Abstraction has 33407 states and 47236 transitions. [2020-12-22 08:22:30,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:22:30,148 INFO L276 IsEmpty]: Start isEmpty. Operand 33407 states and 47236 transitions. [2020-12-22 08:22:30,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:22:30,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:30,158 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] [2020-12-22 08:22:30,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:22:30,158 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:30,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2053099389, now seen corresponding path program 1 times [2020-12-22 08:22:30,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:30,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879220746] [2020-12-22 08:22:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:30,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879220746] [2020-12-22 08:22:30,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:30,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:22:30,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371844279] [2020-12-22 08:22:30,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:22:30,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:30,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:22:30,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:22:30,259 INFO L87 Difference]: Start difference. First operand 33407 states and 47236 transitions. Second operand 7 states. [2020-12-22 08:22:43,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:43,753 INFO L93 Difference]: Finished difference Result 126656 states and 179006 transitions. [2020-12-22 08:22:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:22:43,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-12-22 08:22:43,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:43,907 INFO L225 Difference]: With dead ends: 126656 [2020-12-22 08:22:43,907 INFO L226 Difference]: Without dead ends: 109543 [2020-12-22 08:22:43,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:22:44,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109543 states. [2020-12-22 08:22:48,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109543 to 33442. [2020-12-22 08:22:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33442 states. [2020-12-22 08:22:48,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33442 states to 33442 states and 47281 transitions. [2020-12-22 08:22:48,300 INFO L78 Accepts]: Start accepts. Automaton has 33442 states and 47281 transitions. Word has length 68 [2020-12-22 08:22:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:48,300 INFO L481 AbstractCegarLoop]: Abstraction has 33442 states and 47281 transitions. [2020-12-22 08:22:48,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:22:48,300 INFO L276 IsEmpty]: Start isEmpty. Operand 33442 states and 47281 transitions. [2020-12-22 08:22:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:22:48,310 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:48,310 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] [2020-12-22 08:22:48,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:22:48,311 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:48,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:48,311 INFO L82 PathProgramCache]: Analyzing trace with hash 43383936, now seen corresponding path program 1 times [2020-12-22 08:22:48,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:48,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167084676] [2020-12-22 08:22:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:48,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167084676] [2020-12-22 08:22:48,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:48,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:22:48,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106517255] [2020-12-22 08:22:48,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:22:48,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:48,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:22:48,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:22:48,515 INFO L87 Difference]: Start difference. First operand 33442 states and 47281 transitions. Second operand 8 states. [2020-12-22 08:22:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:58,470 INFO L93 Difference]: Finished difference Result 96159 states and 137303 transitions. [2020-12-22 08:22:58,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:22:58,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-12-22 08:22:58,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:58,545 INFO L225 Difference]: With dead ends: 96159 [2020-12-22 08:22:58,545 INFO L226 Difference]: Without dead ends: 66998 [2020-12-22 08:22:58,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:22:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66998 states. [2020-12-22 08:23:02,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66998 to 32871. [2020-12-22 08:23:02,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32871 states. [2020-12-22 08:23:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32871 states to 32871 states and 46539 transitions. [2020-12-22 08:23:03,016 INFO L78 Accepts]: Start accepts. Automaton has 32871 states and 46539 transitions. Word has length 69 [2020-12-22 08:23:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:03,016 INFO L481 AbstractCegarLoop]: Abstraction has 32871 states and 46539 transitions. [2020-12-22 08:23:03,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:23:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 32871 states and 46539 transitions. [2020-12-22 08:23:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:23:03,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:03,024 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] [2020-12-22 08:23:03,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:23:03,024 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:03,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:03,025 INFO L82 PathProgramCache]: Analyzing trace with hash 80806030, now seen corresponding path program 1 times [2020-12-22 08:23:03,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:03,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513486407] [2020-12-22 08:23:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:03,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513486407] [2020-12-22 08:23:03,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:03,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:23:03,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392387266] [2020-12-22 08:23:03,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:23:03,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:03,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:23:03,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:23:03,167 INFO L87 Difference]: Start difference. First operand 32871 states and 46539 transitions. Second operand 9 states. [2020-12-22 08:23:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:22,868 INFO L93 Difference]: Finished difference Result 155554 states and 222434 transitions. [2020-12-22 08:23:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:23:22,869 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-12-22 08:23:22,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:23,103 INFO L225 Difference]: With dead ends: 155554 [2020-12-22 08:23:23,104 INFO L226 Difference]: Without dead ends: 127351 [2020-12-22 08:23:23,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:23:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127351 states. [2020-12-22 08:23:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127351 to 32685. [2020-12-22 08:23:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32685 states. [2020-12-22 08:23:28,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32685 states to 32685 states and 46292 transitions. [2020-12-22 08:23:28,798 INFO L78 Accepts]: Start accepts. Automaton has 32685 states and 46292 transitions. Word has length 69 [2020-12-22 08:23:28,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:28,798 INFO L481 AbstractCegarLoop]: Abstraction has 32685 states and 46292 transitions. [2020-12-22 08:23:28,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:23:28,798 INFO L276 IsEmpty]: Start isEmpty. Operand 32685 states and 46292 transitions. [2020-12-22 08:23:28,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:23:28,807 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:28,807 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] [2020-12-22 08:23:28,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:23:28,808 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:28,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:28,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1560265185, now seen corresponding path program 1 times [2020-12-22 08:23:28,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:28,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604643154] [2020-12-22 08:23:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:28,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604643154] [2020-12-22 08:23:28,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:28,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:23:28,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964495900] [2020-12-22 08:23:28,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:23:28,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:28,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:23:28,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:23:28,977 INFO L87 Difference]: Start difference. First operand 32685 states and 46292 transitions. Second operand 9 states. [2020-12-22 08:23:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:44,133 INFO L93 Difference]: Finished difference Result 112452 states and 161278 transitions. [2020-12-22 08:23:44,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:23:44,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-12-22 08:23:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:44,237 INFO L225 Difference]: With dead ends: 112452 [2020-12-22 08:23:44,237 INFO L226 Difference]: Without dead ends: 84567 [2020-12-22 08:23:44,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:23:44,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84567 states. [2020-12-22 08:23:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84567 to 32657. [2020-12-22 08:23:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32657 states. [2020-12-22 08:23:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32657 states to 32657 states and 46248 transitions. [2020-12-22 08:23:49,655 INFO L78 Accepts]: Start accepts. Automaton has 32657 states and 46248 transitions. Word has length 69 [2020-12-22 08:23:49,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:49,655 INFO L481 AbstractCegarLoop]: Abstraction has 32657 states and 46248 transitions. [2020-12-22 08:23:49,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:23:49,656 INFO L276 IsEmpty]: Start isEmpty. Operand 32657 states and 46248 transitions. [2020-12-22 08:23:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:23:49,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:49,662 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] [2020-12-22 08:23:49,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:23:49,663 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:49,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1474423363, now seen corresponding path program 1 times [2020-12-22 08:23:49,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:49,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520522514] [2020-12-22 08:23:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:49,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520522514] [2020-12-22 08:23:49,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:49,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:23:49,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453942892] [2020-12-22 08:23:49,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:23:49,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:49,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:23:49,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:23:49,845 INFO L87 Difference]: Start difference. First operand 32657 states and 46248 transitions. Second operand 9 states. [2020-12-22 08:24:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:06,146 INFO L93 Difference]: Finished difference Result 112368 states and 161149 transitions. [2020-12-22 08:24:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:24:06,147 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-12-22 08:24:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:06,406 INFO L225 Difference]: With dead ends: 112368 [2020-12-22 08:24:06,407 INFO L226 Difference]: Without dead ends: 84518 [2020-12-22 08:24:06,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:24:06,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84518 states. [2020-12-22 08:24:12,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84518 to 32645. [2020-12-22 08:24:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32645 states. [2020-12-22 08:24:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32645 states to 32645 states and 46225 transitions. [2020-12-22 08:24:12,381 INFO L78 Accepts]: Start accepts. Automaton has 32645 states and 46225 transitions. Word has length 69 [2020-12-22 08:24:12,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:12,382 INFO L481 AbstractCegarLoop]: Abstraction has 32645 states and 46225 transitions. [2020-12-22 08:24:12,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:24:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 32645 states and 46225 transitions. [2020-12-22 08:24:12,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:24:12,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:12,388 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] [2020-12-22 08:24:12,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:24:12,389 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:12,389 INFO L82 PathProgramCache]: Analyzing trace with hash -688548458, now seen corresponding path program 1 times [2020-12-22 08:24:12,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:12,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064807188] [2020-12-22 08:24:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:12,883 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-12-22 08:24:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:24:13,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064807188] [2020-12-22 08:24:13,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:13,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:24:13,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254996575] [2020-12-22 08:24:13,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:24:13,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:13,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:24:13,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:24:13,603 INFO L87 Difference]: Start difference. First operand 32645 states and 46225 transitions. Second operand 18 states. [2020-12-22 08:24:14,314 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-12-22 08:24:14,796 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:24:14,962 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-12-22 08:24:15,646 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:24:16,121 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 08:24:16,281 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-22 08:24:16,653 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 08:24:16,918 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-22 08:24:17,446 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 08:24:18,140 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:24:18,822 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-22 08:24:22,350 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-22 08:24:36,366 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-22 08:24:40,610 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 08:24:43,346 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-22 08:24:46,339 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33