./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:13:47,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:13:47,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:13:47,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:13:47,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:13:47,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:13:47,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:13:47,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:13:47,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:13:47,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:13:47,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:13:47,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:13:47,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:13:47,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:13:47,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:13:47,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:13:47,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:13:47,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:13:47,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:13:47,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:13:47,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:13:47,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:13:47,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:13:47,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:13:47,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:13:47,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:13:47,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:13:47,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:13:47,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:13:47,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:13:47,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:13:47,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:13:47,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:13:47,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:13:47,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:13:47,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:13:47,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:13:47,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:13:47,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:13:47,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:13:47,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:13:47,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:13:47,193 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:13:47,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:13:47,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:13:47,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:13:47,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:13:47,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:13:47,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:13:47,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:13:47,196 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:13:47,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:13:47,196 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:13:47,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:13:47,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:13:47,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:13:47,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:13:47,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:13:47,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:13:47,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:13:47,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:13:47,198 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:13:47,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:13:47,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:13:47,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:13:47,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:13:47,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:13:47,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:13:47,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:13:47,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:13:47,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:13:47,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:13:47,200 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:13:47,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:13:47,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:13:47,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:13:47,200 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 [2021-12-06 20:13:47,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:13:47,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:13:47,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:13:47,397 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:13:47,397 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:13:47,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2021-12-06 20:13:47,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/data/64e628c3f/6c9cf60a6b9a4bcda17dffb30b99ee17/FLAG56dd1fe08 [2021-12-06 20:13:47,826 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:13:47,827 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2021-12-06 20:13:47,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/data/64e628c3f/6c9cf60a6b9a4bcda17dffb30b99ee17/FLAG56dd1fe08 [2021-12-06 20:13:47,841 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/data/64e628c3f/6c9cf60a6b9a4bcda17dffb30b99ee17 [2021-12-06 20:13:47,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:13:47,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:13:47,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:13:47,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:13:47,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:13:47,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:13:47" (1/1) ... [2021-12-06 20:13:47,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbe84cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:47, skipping insertion in model container [2021-12-06 20:13:47,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:13:47" (1/1) ... [2021-12-06 20:13:47,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:13:47,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:13:47,987 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2021-12-06 20:13:47,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:13:47,995 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:13:48,014 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2021-12-06 20:13:48,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:13:48,025 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:13:48,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48 WrapperNode [2021-12-06 20:13:48,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:13:48,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:13:48,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:13:48,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:13:48,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48" (1/1) ... [2021-12-06 20:13:48,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48" (1/1) ... [2021-12-06 20:13:48,054 INFO L137 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2021-12-06 20:13:48,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:13:48,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:13:48,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:13:48,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:13:48,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48" (1/1) ... [2021-12-06 20:13:48,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48" (1/1) ... [2021-12-06 20:13:48,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48" (1/1) ... [2021-12-06 20:13:48,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48" (1/1) ... [2021-12-06 20:13:48,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48" (1/1) ... [2021-12-06 20:13:48,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48" (1/1) ... [2021-12-06 20:13:48,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48" (1/1) ... [2021-12-06 20:13:48,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:13:48,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:13:48,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:13:48,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:13:48,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48" (1/1) ... [2021-12-06 20:13:48,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:13:48,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:13:48,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:13:48,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:13:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:13:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-06 20:13:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-06 20:13:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-06 20:13:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-06 20:13:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-06 20:13:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-06 20:13:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-12-06 20:13:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-12-06 20:13:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:13:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:13:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:13:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:13:48,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:13:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:13:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:13:48,135 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 20:13:48,200 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:13:48,201 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:13:48,414 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:13:48,423 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:13:48,423 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 20:13:48,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:13:48 BoogieIcfgContainer [2021-12-06 20:13:48,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:13:48,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:13:48,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:13:48,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:13:48,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:13:47" (1/3) ... [2021-12-06 20:13:48,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576484f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:13:48, skipping insertion in model container [2021-12-06 20:13:48,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:48" (2/3) ... [2021-12-06 20:13:48,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576484f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:13:48, skipping insertion in model container [2021-12-06 20:13:48,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:13:48" (3/3) ... [2021-12-06 20:13:48,432 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2021-12-06 20:13:48,436 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 20:13:48,436 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:13:48,436 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:13:48,436 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 20:13:48,466 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,466 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,466 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,466 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,467 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,467 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,467 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,467 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,468 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,468 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,468 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,468 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,469 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,469 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,469 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,469 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,474 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,474 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,475 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,475 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,476 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,476 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:13:48,480 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-12-06 20:13:48,516 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:13:48,521 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 20:13:48,522 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-06 20:13:48,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 330 flow [2021-12-06 20:13:48,579 INFO L129 PetriNetUnfolder]: 10/145 cut-off events. [2021-12-06 20:13:48,579 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-06 20:13:48,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 10/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2021-12-06 20:13:48,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 149 transitions, 330 flow [2021-12-06 20:13:48,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 132 transitions, 288 flow [2021-12-06 20:13:48,611 INFO L129 PetriNetUnfolder]: 10/131 cut-off events. [2021-12-06 20:13:48,611 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-06 20:13:48,612 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:13:48,612 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:48,613 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 20:13:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1414166451, now seen corresponding path program 1 times [2021-12-06 20:13:48,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:13:48,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176174445] [2021-12-06 20:13:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:48,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:13:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:48,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:13:48,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176174445] [2021-12-06 20:13:48,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176174445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:48,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:48,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:13:48,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313416822] [2021-12-06 20:13:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:48,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:13:48,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:13:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:13:48,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:13:48,826 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 149 [2021-12-06 20:13:48,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:48,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:13:48,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 149 [2021-12-06 20:13:48,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:13:48,870 INFO L129 PetriNetUnfolder]: 4/126 cut-off events. [2021-12-06 20:13:48,870 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-12-06 20:13:48,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 126 events. 4/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 18/138 useless extension candidates. Maximal degree in co-relation 101. Up to 9 conditions per place. [2021-12-06 20:13:48,873 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 8 selfloop transitions, 0 changer transitions 2/126 dead transitions. [2021-12-06 20:13:48,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 292 flow [2021-12-06 20:13:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:13:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-06 20:13:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 282 transitions. [2021-12-06 20:13:48,883 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9463087248322147 [2021-12-06 20:13:48,884 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 282 transitions. [2021-12-06 20:13:48,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 282 transitions. [2021-12-06 20:13:48,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:13:48,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 282 transitions. [2021-12-06 20:13:48,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:48,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:48,894 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:48,895 INFO L186 Difference]: Start difference. First operand has 135 places, 132 transitions, 288 flow. Second operand 2 states and 282 transitions. [2021-12-06 20:13:48,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 292 flow [2021-12-06 20:13:48,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 276 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-12-06 20:13:48,901 INFO L242 Difference]: Finished difference. Result has 128 places, 124 transitions, 256 flow [2021-12-06 20:13:48,903 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2021-12-06 20:13:48,907 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -7 predicate places. [2021-12-06 20:13:48,907 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 256 flow [2021-12-06 20:13:48,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:48,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:13:48,908 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:48,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:13:48,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 20:13:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash 735830245, now seen corresponding path program 1 times [2021-12-06 20:13:48,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:13:48,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668438744] [2021-12-06 20:13:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:48,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:13:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:49,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:13:49,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668438744] [2021-12-06 20:13:49,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668438744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:49,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:49,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:13:49,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252340064] [2021-12-06 20:13:49,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:49,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:13:49,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:13:49,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:13:49,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:13:49,271 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 149 [2021-12-06 20:13:49,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:49,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:13:49,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 149 [2021-12-06 20:13:49,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:13:51,906 INFO L129 PetriNetUnfolder]: 24847/33594 cut-off events. [2021-12-06 20:13:51,906 INFO L130 PetriNetUnfolder]: For 860/935 co-relation queries the response was YES. [2021-12-06 20:13:51,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67682 conditions, 33594 events. 24847/33594 cut-off events. For 860/935 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 189881 event pairs, 11708 based on Foata normal form. 1/29807 useless extension candidates. Maximal degree in co-relation 67679. Up to 32788 conditions per place. [2021-12-06 20:13:52,207 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 71 selfloop transitions, 7 changer transitions 4/146 dead transitions. [2021-12-06 20:13:52,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 471 flow [2021-12-06 20:13:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:13:52,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 20:13:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2021-12-06 20:13:52,212 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6164908916586769 [2021-12-06 20:13:52,212 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2021-12-06 20:13:52,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2021-12-06 20:13:52,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:13:52,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2021-12-06 20:13:52,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:52,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:52,219 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:52,220 INFO L186 Difference]: Start difference. First operand has 128 places, 124 transitions, 256 flow. Second operand 7 states and 643 transitions. [2021-12-06 20:13:52,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 471 flow [2021-12-06 20:13:52,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 146 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 20:13:52,223 INFO L242 Difference]: Finished difference. Result has 135 places, 128 transitions, 297 flow [2021-12-06 20:13:52,224 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2021-12-06 20:13:52,224 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2021-12-06 20:13:52,225 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 297 flow [2021-12-06 20:13:52,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:52,225 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:13:52,225 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:52,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:13:52,226 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 20:13:52,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:52,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1435785726, now seen corresponding path program 1 times [2021-12-06 20:13:52,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:13:52,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509755245] [2021-12-06 20:13:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:52,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:13:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:52,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:13:52,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509755245] [2021-12-06 20:13:52,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509755245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:52,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:52,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:13:52,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46077009] [2021-12-06 20:13:52,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:52,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:13:52,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:13:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:13:52,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:13:52,491 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-06 20:13:52,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:52,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:13:52,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-06 20:13:52,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:13:54,790 INFO L129 PetriNetUnfolder]: 24821/33501 cut-off events. [2021-12-06 20:13:54,791 INFO L130 PetriNetUnfolder]: For 3786/3861 co-relation queries the response was YES. [2021-12-06 20:13:54,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71364 conditions, 33501 events. 24821/33501 cut-off events. For 3786/3861 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 189180 event pairs, 11557 based on Foata normal form. 0/29743 useless extension candidates. Maximal degree in co-relation 71357. Up to 32790 conditions per place. [2021-12-06 20:13:55,020 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 81 selfloop transitions, 11 changer transitions 1/155 dead transitions. [2021-12-06 20:13:55,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 155 transitions, 554 flow [2021-12-06 20:13:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:13:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 20:13:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2021-12-06 20:13:55,022 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6297539149888143 [2021-12-06 20:13:55,023 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2021-12-06 20:13:55,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2021-12-06 20:13:55,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:13:55,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2021-12-06 20:13:55,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:55,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:55,028 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:55,028 INFO L186 Difference]: Start difference. First operand has 135 places, 128 transitions, 297 flow. Second operand 6 states and 563 transitions. [2021-12-06 20:13:55,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 155 transitions, 554 flow [2021-12-06 20:13:55,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 155 transitions, 539 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-12-06 20:13:55,033 INFO L242 Difference]: Finished difference. Result has 135 places, 132 transitions, 337 flow [2021-12-06 20:13:55,033 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=337, PETRI_PLACES=135, PETRI_TRANSITIONS=132} [2021-12-06 20:13:55,034 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2021-12-06 20:13:55,034 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 132 transitions, 337 flow [2021-12-06 20:13:55,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:55,035 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:13:55,035 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:55,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:13:55,035 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 20:13:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash -678323914, now seen corresponding path program 2 times [2021-12-06 20:13:55,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:13:55,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16520568] [2021-12-06 20:13:55,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:55,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:13:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:55,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:13:55,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16520568] [2021-12-06 20:13:55,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16520568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:55,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:55,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:13:55,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148745305] [2021-12-06 20:13:55,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:55,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:13:55,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:13:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:13:55,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:13:55,256 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-06 20:13:55,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:55,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:13:55,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-06 20:13:55,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:13:57,476 INFO L129 PetriNetUnfolder]: 24709/33724 cut-off events. [2021-12-06 20:13:57,476 INFO L130 PetriNetUnfolder]: For 7516/7601 co-relation queries the response was YES. [2021-12-06 20:13:57,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75024 conditions, 33724 events. 24709/33724 cut-off events. For 7516/7601 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 194599 event pairs, 12405 based on Foata normal form. 37/31819 useless extension candidates. Maximal degree in co-relation 75017. Up to 32735 conditions per place. [2021-12-06 20:13:57,676 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 82 selfloop transitions, 13 changer transitions 1/158 dead transitions. [2021-12-06 20:13:57,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 158 transitions, 613 flow [2021-12-06 20:13:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:13:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 20:13:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2021-12-06 20:13:57,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6286353467561522 [2021-12-06 20:13:57,679 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2021-12-06 20:13:57,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2021-12-06 20:13:57,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:13:57,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2021-12-06 20:13:57,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:57,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:57,683 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:57,683 INFO L186 Difference]: Start difference. First operand has 135 places, 132 transitions, 337 flow. Second operand 6 states and 562 transitions. [2021-12-06 20:13:57,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 158 transitions, 613 flow [2021-12-06 20:13:57,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 158 transitions, 591 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 20:13:57,688 INFO L242 Difference]: Finished difference. Result has 138 places, 136 transitions, 384 flow [2021-12-06 20:13:57,688 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=138, PETRI_TRANSITIONS=136} [2021-12-06 20:13:57,689 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2021-12-06 20:13:57,689 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 136 transitions, 384 flow [2021-12-06 20:13:57,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:57,689 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:13:57,689 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:57,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:13:57,690 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 20:13:57,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:57,690 INFO L85 PathProgramCache]: Analyzing trace with hash 34940876, now seen corresponding path program 3 times [2021-12-06 20:13:57,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:13:57,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763799917] [2021-12-06 20:13:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:57,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:13:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:57,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:13:57,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763799917] [2021-12-06 20:13:57,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763799917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:57,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:57,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:13:57,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737540146] [2021-12-06 20:13:57,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:57,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:13:57,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:13:57,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:13:57,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:13:57,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-06 20:13:57,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 136 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:57,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:13:57,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-06 20:13:57,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:14:00,471 INFO L129 PetriNetUnfolder]: 27400/37091 cut-off events. [2021-12-06 20:14:00,471 INFO L130 PetriNetUnfolder]: For 14775/14847 co-relation queries the response was YES. [2021-12-06 20:14:00,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85484 conditions, 37091 events. 27400/37091 cut-off events. For 14775/14847 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 215849 event pairs, 8744 based on Foata normal form. 902/35852 useless extension candidates. Maximal degree in co-relation 85475. Up to 29078 conditions per place. [2021-12-06 20:14:00,745 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 111 selfloop transitions, 15 changer transitions 1/189 dead transitions. [2021-12-06 20:14:00,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 189 transitions, 783 flow [2021-12-06 20:14:00,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:14:00,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 20:14:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2021-12-06 20:14:00,748 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423777564717162 [2021-12-06 20:14:00,748 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2021-12-06 20:14:00,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2021-12-06 20:14:00,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:14:00,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2021-12-06 20:14:00,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:00,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:00,752 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:00,753 INFO L186 Difference]: Start difference. First operand has 138 places, 136 transitions, 384 flow. Second operand 7 states and 670 transitions. [2021-12-06 20:14:00,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 189 transitions, 783 flow [2021-12-06 20:14:00,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 189 transitions, 760 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-12-06 20:14:00,763 INFO L242 Difference]: Finished difference. Result has 143 places, 137 transitions, 418 flow [2021-12-06 20:14:00,763 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=143, PETRI_TRANSITIONS=137} [2021-12-06 20:14:00,764 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 8 predicate places. [2021-12-06 20:14:00,764 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 137 transitions, 418 flow [2021-12-06 20:14:00,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:00,764 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:14:00,764 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:00,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:14:00,765 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 20:14:00,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:00,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1082751602, now seen corresponding path program 1 times [2021-12-06 20:14:00,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:00,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645045026] [2021-12-06 20:14:00,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:00,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:00,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:14:00,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645045026] [2021-12-06 20:14:00,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645045026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:14:00,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:14:00,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:14:00,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523236303] [2021-12-06 20:14:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:14:00,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:14:00,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:14:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:14:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:14:00,944 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-06 20:14:00,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 137 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:00,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:14:00,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-06 20:14:00,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:14:03,675 INFO L129 PetriNetUnfolder]: 27379/39351 cut-off events. [2021-12-06 20:14:03,675 INFO L130 PetriNetUnfolder]: For 21988/22051 co-relation queries the response was YES. [2021-12-06 20:14:03,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91342 conditions, 39351 events. 27379/39351 cut-off events. For 21988/22051 co-relation queries the response was YES. Maximal size of possible extension queue 1523. Compared 259709 event pairs, 14648 based on Foata normal form. 0/37227 useless extension candidates. Maximal degree in co-relation 91332. Up to 36326 conditions per place. [2021-12-06 20:14:03,903 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 89 selfloop transitions, 21 changer transitions 1/173 dead transitions. [2021-12-06 20:14:03,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 173 transitions, 838 flow [2021-12-06 20:14:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:14:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 20:14:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2021-12-06 20:14:03,906 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6308724832214765 [2021-12-06 20:14:03,906 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2021-12-06 20:14:03,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2021-12-06 20:14:03,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:14:03,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2021-12-06 20:14:03,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:03,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:03,911 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:03,911 INFO L186 Difference]: Start difference. First operand has 143 places, 137 transitions, 418 flow. Second operand 6 states and 564 transitions. [2021-12-06 20:14:03,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 173 transitions, 838 flow [2021-12-06 20:14:03,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 173 transitions, 809 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 20:14:03,922 INFO L242 Difference]: Finished difference. Result has 146 places, 147 transitions, 548 flow [2021-12-06 20:14:03,922 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=146, PETRI_TRANSITIONS=147} [2021-12-06 20:14:03,923 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 11 predicate places. [2021-12-06 20:14:03,923 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 147 transitions, 548 flow [2021-12-06 20:14:03,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:03,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:14:03,924 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:03,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:14:03,924 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 20:14:03,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:03,925 INFO L85 PathProgramCache]: Analyzing trace with hash 267422604, now seen corresponding path program 2 times [2021-12-06 20:14:03,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:03,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77093457] [2021-12-06 20:14:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:03,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:04,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:14:04,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77093457] [2021-12-06 20:14:04,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77093457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:14:04,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:14:04,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:14:04,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047335587] [2021-12-06 20:14:04,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:14:04,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:14:04,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:14:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:14:04,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:14:04,105 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-06 20:14:04,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 147 transitions, 548 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:04,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:14:04,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-06 20:14:04,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:14:06,966 INFO L129 PetriNetUnfolder]: 27326/39130 cut-off events. [2021-12-06 20:14:06,966 INFO L130 PetriNetUnfolder]: For 24540/24603 co-relation queries the response was YES. [2021-12-06 20:14:07,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94991 conditions, 39130 events. 27326/39130 cut-off events. For 24540/24603 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 253803 event pairs, 17526 based on Foata normal form. 20/38872 useless extension candidates. Maximal degree in co-relation 94978. Up to 36297 conditions per place. [2021-12-06 20:14:07,247 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 90 selfloop transitions, 17 changer transitions 2/171 dead transitions. [2021-12-06 20:14:07,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 171 transitions, 844 flow [2021-12-06 20:14:07,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:14:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 20:14:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2021-12-06 20:14:07,250 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6286353467561522 [2021-12-06 20:14:07,250 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2021-12-06 20:14:07,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2021-12-06 20:14:07,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:14:07,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2021-12-06 20:14:07,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:07,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:07,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:07,254 INFO L186 Difference]: Start difference. First operand has 146 places, 147 transitions, 548 flow. Second operand 6 states and 562 transitions. [2021-12-06 20:14:07,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 171 transitions, 844 flow [2021-12-06 20:14:07,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 171 transitions, 827 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-06 20:14:07,267 INFO L242 Difference]: Finished difference. Result has 150 places, 145 transitions, 550 flow [2021-12-06 20:14:07,267 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=550, PETRI_PLACES=150, PETRI_TRANSITIONS=145} [2021-12-06 20:14:07,268 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 15 predicate places. [2021-12-06 20:14:07,268 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 145 transitions, 550 flow [2021-12-06 20:14:07,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:07,269 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:14:07,269 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:07,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:14:07,269 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 20:14:07,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash 620717378, now seen corresponding path program 1 times [2021-12-06 20:14:07,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:07,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366404952] [2021-12-06 20:14:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:07,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:07,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:14:07,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366404952] [2021-12-06 20:14:07,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366404952] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:14:07,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488913040] [2021-12-06 20:14:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:07,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:14:07,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:14:07,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:14:07,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:14:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:07,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 20:14:07,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:14:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:07,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:14:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:08,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488913040] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:14:08,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:14:08,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2021-12-06 20:14:08,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299692388] [2021-12-06 20:14:08,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:14:08,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:14:08,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:14:08,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:14:08,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:14:08,808 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-06 20:14:08,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 145 transitions, 550 flow. Second operand has 14 states, 14 states have (on average 83.35714285714286) internal successors, (1167), 14 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:08,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:14:08,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-06 20:14:08,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:14:13,294 INFO L129 PetriNetUnfolder]: 38104/55867 cut-off events. [2021-12-06 20:14:13,295 INFO L130 PetriNetUnfolder]: For 40938/40979 co-relation queries the response was YES. [2021-12-06 20:14:13,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140707 conditions, 55867 events. 38104/55867 cut-off events. For 40938/40979 co-relation queries the response was YES. Maximal size of possible extension queue 1883. Compared 389838 event pairs, 2933 based on Foata normal form. 1114/56792 useless extension candidates. Maximal degree in co-relation 140692. Up to 30380 conditions per place. [2021-12-06 20:14:13,691 INFO L132 encePairwiseOnDemand]: 134/149 looper letters, 250 selfloop transitions, 32 changer transitions 2/346 dead transitions. [2021-12-06 20:14:13,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 346 transitions, 1826 flow [2021-12-06 20:14:13,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:14:13,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-06 20:14:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1357 transitions. [2021-12-06 20:14:13,695 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6505273250239694 [2021-12-06 20:14:13,695 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1357 transitions. [2021-12-06 20:14:13,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1357 transitions. [2021-12-06 20:14:13,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:14:13,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1357 transitions. [2021-12-06 20:14:13,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 96.92857142857143) internal successors, (1357), 14 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:13,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:13,703 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:13,703 INFO L186 Difference]: Start difference. First operand has 150 places, 145 transitions, 550 flow. Second operand 14 states and 1357 transitions. [2021-12-06 20:14:13,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 346 transitions, 1826 flow [2021-12-06 20:14:13,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 346 transitions, 1785 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-12-06 20:14:13,744 INFO L242 Difference]: Finished difference. Result has 167 places, 157 transitions, 700 flow [2021-12-06 20:14:13,745 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=700, PETRI_PLACES=167, PETRI_TRANSITIONS=157} [2021-12-06 20:14:13,745 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 32 predicate places. [2021-12-06 20:14:13,745 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 157 transitions, 700 flow [2021-12-06 20:14:13,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.35714285714286) internal successors, (1167), 14 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:13,746 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:14:13,746 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:13,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:14:13,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 20:14:13,948 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 20:14:13,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:13,949 INFO L85 PathProgramCache]: Analyzing trace with hash 440214246, now seen corresponding path program 3 times [2021-12-06 20:14:13,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:13,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640163011] [2021-12-06 20:14:13,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:13,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:14,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:14:14,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640163011] [2021-12-06 20:14:14,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640163011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:14:14,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:14:14,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:14:14,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388988147] [2021-12-06 20:14:14,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:14:14,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:14:14,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:14:14,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:14:14,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:14:14,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-06 20:14:14,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 157 transitions, 700 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:14,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:14:14,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-06 20:14:14,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:14:19,151 INFO L129 PetriNetUnfolder]: 41124/59664 cut-off events. [2021-12-06 20:14:19,151 INFO L130 PetriNetUnfolder]: For 79828/79903 co-relation queries the response was YES. [2021-12-06 20:14:19,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169767 conditions, 59664 events. 41124/59664 cut-off events. For 79828/79903 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 410802 event pairs, 23951 based on Foata normal form. 909/60284 useless extension candidates. Maximal degree in co-relation 169746. Up to 44500 conditions per place. [2021-12-06 20:14:19,650 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 133 selfloop transitions, 21 changer transitions 2/218 dead transitions. [2021-12-06 20:14:19,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 218 transitions, 1289 flow [2021-12-06 20:14:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:14:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 20:14:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2021-12-06 20:14:19,652 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423777564717162 [2021-12-06 20:14:19,653 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2021-12-06 20:14:19,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2021-12-06 20:14:19,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:14:19,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2021-12-06 20:14:19,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:19,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:19,656 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:19,657 INFO L186 Difference]: Start difference. First operand has 167 places, 157 transitions, 700 flow. Second operand 7 states and 670 transitions. [2021-12-06 20:14:19,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 218 transitions, 1289 flow [2021-12-06 20:14:20,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 218 transitions, 1258 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-12-06 20:14:20,359 INFO L242 Difference]: Finished difference. Result has 170 places, 158 transitions, 744 flow [2021-12-06 20:14:20,359 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=744, PETRI_PLACES=170, PETRI_TRANSITIONS=158} [2021-12-06 20:14:20,360 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 35 predicate places. [2021-12-06 20:14:20,360 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 158 transitions, 744 flow [2021-12-06 20:14:20,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:20,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:14:20,360 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:20,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:14:20,360 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 20:14:20,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:20,361 INFO L85 PathProgramCache]: Analyzing trace with hash -387427532, now seen corresponding path program 1 times [2021-12-06 20:14:20,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:20,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257453075] [2021-12-06 20:14:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:20,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:20,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:14:20,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257453075] [2021-12-06 20:14:20,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257453075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:14:20,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:14:20,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:14:20,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308762969] [2021-12-06 20:14:20,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:14:20,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:14:20,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:14:20,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:14:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:14:20,497 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-06 20:14:20,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 158 transitions, 744 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:20,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:14:20,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-06 20:14:20,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:14:25,964 INFO L129 PetriNetUnfolder]: 44814/64695 cut-off events. [2021-12-06 20:14:25,965 INFO L130 PetriNetUnfolder]: For 108788/108853 co-relation queries the response was YES. [2021-12-06 20:14:26,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194158 conditions, 64695 events. 44814/64695 cut-off events. For 108788/108853 co-relation queries the response was YES. Maximal size of possible extension queue 2003. Compared 446321 event pairs, 24472 based on Foata normal form. 1271/65805 useless extension candidates. Maximal degree in co-relation 194135. Up to 49580 conditions per place. [2021-12-06 20:14:26,607 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 144 selfloop transitions, 19 changer transitions 2/227 dead transitions. [2021-12-06 20:14:26,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 227 transitions, 1459 flow [2021-12-06 20:14:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:14:26,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 20:14:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2021-12-06 20:14:26,610 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423777564717162 [2021-12-06 20:14:26,610 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2021-12-06 20:14:26,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2021-12-06 20:14:26,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:14:26,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2021-12-06 20:14:26,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:26,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:26,614 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:26,614 INFO L186 Difference]: Start difference. First operand has 170 places, 158 transitions, 744 flow. Second operand 7 states and 670 transitions. [2021-12-06 20:14:26,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 227 transitions, 1459 flow [2021-12-06 20:14:27,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 227 transitions, 1434 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 20:14:27,333 INFO L242 Difference]: Finished difference. Result has 174 places, 159 transitions, 786 flow [2021-12-06 20:14:27,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=786, PETRI_PLACES=174, PETRI_TRANSITIONS=159} [2021-12-06 20:14:27,334 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 39 predicate places. [2021-12-06 20:14:27,334 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 159 transitions, 786 flow [2021-12-06 20:14:27,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:27,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:14:27,335 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:27,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:14:27,335 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 20:14:27,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:27,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1745629947, now seen corresponding path program 1 times [2021-12-06 20:14:27,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:27,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163259631] [2021-12-06 20:14:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:27,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:05,428 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (div c_~x3~0 4294967296)) (.cse0 (* c_~x4~0 (- 8)))) (and (<= (+ (* 8 c_~x4~0) (* 4294967296 (div (+ 4294967295 .cse0 c_~x3~0) 4294967296)) (* 4294967296 (div c_~n~0 4294967296))) (+ (* 4294967296 .cse1) 4261412736 c_~n~0)) (let ((.cse2 (div (+ (- 16) c_~x4~0) 536870912)) (.cse3 (div (+ .cse0 c_~x3~0) 4294967296))) (<= (* 2 (div (+ 72477573135 (* .cse2 (- 69256347648)) (* c_~x4~0 (- 127)) (* .cse3 (- 69256347648)) (* .cse1 18446744142429028352)) 68182605824)) (+ c_~x4~0 (* 4227328 .cse2) (* 541098242 .cse3)))) (= (+ (* 4294967296 (div c_~x2~0 4294967296)) c_~x1~0) (+ c_~x2~0 (* 4294967296 (div c_~x1~0 4294967296)))))) is different from false [2021-12-06 20:16:16,984 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (div c_~x3~0 4294967296)) (.cse0 (* c_~x4~0 (- 2)))) (and (<= (+ (* 4294967296 (div (+ 4294967295 c_~x3~0 .cse0) 4294967296)) (* 2 c_~x4~0) (* 4294967296 (div c_~n~0 4294967296))) (+ (* 4294967296 .cse1) 4261412736 c_~n~0)) (let ((.cse2 (div (+ (- 64) c_~x4~0) 2147483648)) (.cse3 (div (+ c_~x3~0 .cse0) 4294967296))) (<= (* 8 (div (+ 289910292543 (* .cse2 (- 277025390592)) (* .cse1 73786976569716113408) (* c_~x4~0 (- 127)) (* .cse3 (- 277025390592))) 272730423296)) (+ c_~x4~0 (* 16909312 .cse2) (* 2164392968 .cse3)))) (= (+ (* 4294967296 (div c_~x2~0 4294967296)) c_~x1~0) (+ c_~x2~0 (* 4294967296 (div c_~x1~0 4294967296)))))) is different from false [2021-12-06 20:16:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:19,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:19,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163259631] [2021-12-06 20:16:19,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163259631] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:19,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915237012] [2021-12-06 20:16:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:19,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:19,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:19,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:19,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9351b137-7bd6-459b-9f5a-03521654a424/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:16:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:27,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 20:16:27,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:21:59,156 WARN L227 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)