./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg --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 8e0b8e6efb6fc18f3ca2ba094d3acbfc6a07fbc0100e70485e3a3a84ea56105b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:04:03,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:04:03,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:04:03,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:04:03,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:04:03,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:04:03,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:04:03,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:04:03,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:04:03,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:04:03,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:04:03,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:04:03,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:04:03,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:04:03,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:04:03,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:04:03,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:04:03,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:04:03,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:04:03,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:04:03,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:04:03,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:04:03,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:04:03,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:04:03,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:04:03,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:04:03,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:04:03,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:04:03,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:04:03,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:04:03,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:04:03,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:04:03,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:04:03,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:04:03,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:04:03,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:04:03,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:04:03,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:04:03,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:04:03,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:04:03,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:04:03,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:04:03,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:04:03,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:04:03,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:04:03,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:04:03,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:04:03,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:04:03,927 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:04:03,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:04:03,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:04:03,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:04:03,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:04:03,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:04:03,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:04:03,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:04:03,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:04:03,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:04:03,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:04:03,931 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:04:03,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:04:03,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:04:03,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:04:03,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:04:03,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:04:03,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:04:03,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:04:03,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:04:03,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:04:03,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:04:03,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:04:03,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:04:03,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:04:03,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:04:03,936 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_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0b8e6efb6fc18f3ca2ba094d3acbfc6a07fbc0100e70485e3a3a84ea56105b [2021-10-28 09:04:04,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:04:04,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:04:04,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:04:04,255 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:04:04,259 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:04:04,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 09:04:04,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/data/95eced433/2c153b0fb48c456f85e8065131f34299/FLAGeb1e13e12 [2021-10-28 09:04:04,982 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:04:04,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 09:04:05,021 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/data/95eced433/2c153b0fb48c456f85e8065131f34299/FLAGeb1e13e12 [2021-10-28 09:04:05,278 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/data/95eced433/2c153b0fb48c456f85e8065131f34299 [2021-10-28 09:04:05,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:04:05,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:04:05,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:04:05,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:04:05,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:04:05,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:05,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25147fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05, skipping insertion in model container [2021-10-28 09:04:05,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:05,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:04:05,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:04:05,625 WARN L228 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_9841dccd-616d-46e4-8965-81f5bd16cf89/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-28 09:04:05,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:04:05,836 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:04:05,854 WARN L228 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_9841dccd-616d-46e4-8965-81f5bd16cf89/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-28 09:04:05,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:04:05,981 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:04:05,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05 WrapperNode [2021-10-28 09:04:05,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:04:05,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:04:05,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:04:05,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:04:05,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:06,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:06,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:04:06,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:04:06,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:04:06,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:04:06,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:06,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:06,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:06,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:06,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:06,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:06,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:06,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:04:06,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:04:06,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:04:06,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:04:06,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05" (1/1) ... [2021-10-28 09:04:06,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:04:06,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:06,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:04:06,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:04:06,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:04:06,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:04:06,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:04:06,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:04:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 09:04:06,240 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 09:04:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 09:04:06,240 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 09:04:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 09:04:06,240 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 09:04:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:04:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:04:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:04:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:04:06,243 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:04:06,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:04:06,633 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 09:04:06,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:06 BoogieIcfgContainer [2021-10-28 09:04:06,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:04:06,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:04:06,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:04:06,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:04:06,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:04:05" (1/3) ... [2021-10-28 09:04:06,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2038bead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:04:06, skipping insertion in model container [2021-10-28 09:04:06,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:05" (2/3) ... [2021-10-28 09:04:06,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2038bead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:04:06, skipping insertion in model container [2021-10-28 09:04:06,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:06" (3/3) ... [2021-10-28 09:04:06,646 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 09:04:06,651 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:04:06,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:04:06,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:04:06,652 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:04:06,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,699 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,699 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,700 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,700 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,701 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,701 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,701 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,701 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,703 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,703 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,704 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,704 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,708 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,709 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,710 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,711 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,711 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,711 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,711 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,720 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,720 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,720 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,721 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,730 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,731 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:04:06,733 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 09:04:06,795 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:04:06,811 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 [2021-10-28 09:04:06,812 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 09:04:06,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-10-28 09:04:06,914 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-10-28 09:04:06,914 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:04:06,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-28 09:04:06,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-10-28 09:04:06,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-10-28 09:04:07,003 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-10-28 09:04:07,003 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:04:07,003 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:07,004 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] [2021-10-28 09:04:07,005 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:04:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash 939149912, now seen corresponding path program 1 times [2021-10-28 09:04:07,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:07,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121768496] [2021-10-28 09:04:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:07,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:07,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:07,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121768496] [2021-10-28 09:04:07,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121768496] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:07,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:07,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:04:07,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969477410] [2021-10-28 09:04:07,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:04:07,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:07,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:04:07,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:04:07,764 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-10-28 09:04:07,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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) [2021-10-28 09:04:07,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:07,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-10-28 09:04:07,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:08,292 INFO L129 PetriNetUnfolder]: 87/302 cut-off events. [2021-10-28 09:04:08,297 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:04:08,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 302 events. 87/302 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1337 event pairs, 10 based on Foata normal form. 14/305 useless extension candidates. Maximal degree in co-relation 466. Up to 60 conditions per place. [2021-10-28 09:04:08,308 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 5 changer transitions 35/109 dead transitions. [2021-10-28 09:04:08,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 339 flow [2021-10-28 09:04:08,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:04:08,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:04:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2021-10-28 09:04:08,336 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.850844277673546 [2021-10-28 09:04:08,337 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 907 transitions. [2021-10-28 09:04:08,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 907 transitions. [2021-10-28 09:04:08,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:08,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 907 transitions. [2021-10-28 09:04:08,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.76923076923077) internal successors, (907), 13 states have internal predecessors, (907), 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) [2021-10-28 09:04:08,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-10-28 09:04:08,374 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-10-28 09:04:08,376 INFO L186 Difference]: Start difference. First operand has 76 places, 67 transitions, 143 flow. Second operand 13 states and 907 transitions. [2021-10-28 09:04:08,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 339 flow [2021-10-28 09:04:08,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 09:04:08,390 INFO L242 Difference]: Finished difference. Result has 96 places, 68 transitions, 195 flow [2021-10-28 09:04:08,392 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=195, PETRI_PLACES=96, PETRI_TRANSITIONS=68} [2021-10-28 09:04:08,393 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2021-10-28 09:04:08,394 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 68 transitions, 195 flow [2021-10-28 09:04:08,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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) [2021-10-28 09:04:08,395 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:08,395 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] [2021-10-28 09:04:08,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:04:08,397 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:04:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:08,397 INFO L85 PathProgramCache]: Analyzing trace with hash -676079175, now seen corresponding path program 1 times [2021-10-28 09:04:08,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:08,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215454458] [2021-10-28 09:04:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:08,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:08,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:08,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:08,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215454458] [2021-10-28 09:04:08,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215454458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:08,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:08,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:04:08,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465027148] [2021-10-28 09:04:08,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:04:08,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:08,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:04:08,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:04:08,654 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-10-28 09:04:08,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 68 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 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) [2021-10-28 09:04:08,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:08,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-10-28 09:04:08,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:09,043 INFO L129 PetriNetUnfolder]: 51/261 cut-off events. [2021-10-28 09:04:09,044 INFO L130 PetriNetUnfolder]: For 414/468 co-relation queries the response was YES. [2021-10-28 09:04:09,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 261 events. 51/261 cut-off events. For 414/468 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1208 event pairs, 10 based on Foata normal form. 9/265 useless extension candidates. Maximal degree in co-relation 648. Up to 48 conditions per place. [2021-10-28 09:04:09,051 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 14 selfloop transitions, 7 changer transitions 28/102 dead transitions. [2021-10-28 09:04:09,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 509 flow [2021-10-28 09:04:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:04:09,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:04:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 897 transitions. [2021-10-28 09:04:09,056 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8414634146341463 [2021-10-28 09:04:09,056 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 897 transitions. [2021-10-28 09:04:09,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 897 transitions. [2021-10-28 09:04:09,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:09,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 897 transitions. [2021-10-28 09:04:09,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.0) internal successors, (897), 13 states have internal predecessors, (897), 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) [2021-10-28 09:04:09,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-10-28 09:04:09,066 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-10-28 09:04:09,066 INFO L186 Difference]: Start difference. First operand has 96 places, 68 transitions, 195 flow. Second operand 13 states and 897 transitions. [2021-10-28 09:04:09,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 509 flow [2021-10-28 09:04:09,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 102 transitions, 431 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-10-28 09:04:09,080 INFO L242 Difference]: Finished difference. Result has 101 places, 69 transitions, 215 flow [2021-10-28 09:04:09,081 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=215, PETRI_PLACES=101, PETRI_TRANSITIONS=69} [2021-10-28 09:04:09,081 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2021-10-28 09:04:09,082 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 69 transitions, 215 flow [2021-10-28 09:04:09,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 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) [2021-10-28 09:04:09,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:09,085 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] [2021-10-28 09:04:09,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:04:09,086 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:04:09,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:09,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1789674506, now seen corresponding path program 1 times [2021-10-28 09:04:09,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:09,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655061960] [2021-10-28 09:04:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:09,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:09,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:09,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655061960] [2021-10-28 09:04:09,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655061960] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:09,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:09,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:04:09,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347318741] [2021-10-28 09:04:09,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:04:09,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:09,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:04:09,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:04:09,327 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-10-28 09:04:09,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 69 transitions, 215 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 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) [2021-10-28 09:04:09,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:09,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-10-28 09:04:09,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:09,576 INFO L129 PetriNetUnfolder]: 63/258 cut-off events. [2021-10-28 09:04:09,577 INFO L130 PetriNetUnfolder]: For 607/721 co-relation queries the response was YES. [2021-10-28 09:04:09,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 258 events. 63/258 cut-off events. For 607/721 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1122 event pairs, 6 based on Foata normal form. 9/256 useless extension candidates. Maximal degree in co-relation 723. Up to 66 conditions per place. [2021-10-28 09:04:09,580 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 10 selfloop transitions, 4 changer transitions 26/97 dead transitions. [2021-10-28 09:04:09,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 97 transitions, 492 flow [2021-10-28 09:04:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:04:09,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:04:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 703 transitions. [2021-10-28 09:04:09,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8573170731707317 [2021-10-28 09:04:09,585 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 703 transitions. [2021-10-28 09:04:09,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 703 transitions. [2021-10-28 09:04:09,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:09,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 703 transitions. [2021-10-28 09:04:09,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.3) internal successors, (703), 10 states have internal predecessors, (703), 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) [2021-10-28 09:04:09,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-10-28 09:04:09,591 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-10-28 09:04:09,592 INFO L186 Difference]: Start difference. First operand has 101 places, 69 transitions, 215 flow. Second operand 10 states and 703 transitions. [2021-10-28 09:04:09,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 97 transitions, 492 flow [2021-10-28 09:04:09,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 97 transitions, 430 flow, removed 24 selfloop flow, removed 10 redundant places. [2021-10-28 09:04:09,604 INFO L242 Difference]: Finished difference. Result has 99 places, 69 transitions, 215 flow [2021-10-28 09:04:09,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=215, PETRI_PLACES=99, PETRI_TRANSITIONS=69} [2021-10-28 09:04:09,604 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2021-10-28 09:04:09,605 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 69 transitions, 215 flow [2021-10-28 09:04:09,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 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) [2021-10-28 09:04:09,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:09,606 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] [2021-10-28 09:04:09,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:04:09,609 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:04:09,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:09,612 INFO L85 PathProgramCache]: Analyzing trace with hash 113009271, now seen corresponding path program 1 times [2021-10-28 09:04:09,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:09,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245645227] [2021-10-28 09:04:09,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:09,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:09,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:09,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245645227] [2021-10-28 09:04:09,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245645227] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:09,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:09,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:04:09,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286975077] [2021-10-28 09:04:09,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:04:09,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:04:09,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:04:09,842 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-28 09:04:09,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 69 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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) [2021-10-28 09:04:09,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:09,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-28 09:04:09,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:10,069 INFO L129 PetriNetUnfolder]: 270/675 cut-off events. [2021-10-28 09:04:10,069 INFO L130 PetriNetUnfolder]: For 379/387 co-relation queries the response was YES. [2021-10-28 09:04:10,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 675 events. 270/675 cut-off events. For 379/387 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4321 event pairs, 11 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 1386. Up to 187 conditions per place. [2021-10-28 09:04:10,078 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 21 selfloop transitions, 15 changer transitions 5/99 dead transitions. [2021-10-28 09:04:10,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 357 flow [2021-10-28 09:04:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:04:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:04:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 723 transitions. [2021-10-28 09:04:10,084 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8817073170731707 [2021-10-28 09:04:10,084 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 723 transitions. [2021-10-28 09:04:10,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 723 transitions. [2021-10-28 09:04:10,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:10,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 723 transitions. [2021-10-28 09:04:10,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.3) internal successors, (723), 10 states have internal predecessors, (723), 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) [2021-10-28 09:04:10,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-10-28 09:04:10,092 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-10-28 09:04:10,092 INFO L186 Difference]: Start difference. First operand has 99 places, 69 transitions, 215 flow. Second operand 10 states and 723 transitions. [2021-10-28 09:04:10,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 357 flow [2021-10-28 09:04:10,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 99 transitions, 331 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-10-28 09:04:10,103 INFO L242 Difference]: Finished difference. Result has 98 places, 82 transitions, 298 flow [2021-10-28 09:04:10,104 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=298, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2021-10-28 09:04:10,104 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2021-10-28 09:04:10,105 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 298 flow [2021-10-28 09:04:10,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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) [2021-10-28 09:04:10,105 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:10,106 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] [2021-10-28 09:04:10,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:04:10,106 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:04:10,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:10,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2083302689, now seen corresponding path program 1 times [2021-10-28 09:04:10,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:10,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365936014] [2021-10-28 09:04:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:10,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:10,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:10,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365936014] [2021-10-28 09:04:10,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365936014] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:10,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:10,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:04:10,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764741712] [2021-10-28 09:04:10,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:04:10,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:10,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:04:10,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:04:10,292 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-28 09:04:10,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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) [2021-10-28 09:04:10,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:10,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-28 09:04:10,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:10,631 INFO L129 PetriNetUnfolder]: 250/653 cut-off events. [2021-10-28 09:04:10,631 INFO L130 PetriNetUnfolder]: For 1606/1933 co-relation queries the response was YES. [2021-10-28 09:04:10,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 653 events. 250/653 cut-off events. For 1606/1933 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4300 event pairs, 0 based on Foata normal form. 63/672 useless extension candidates. Maximal degree in co-relation 2216. Up to 275 conditions per place. [2021-10-28 09:04:10,640 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 20 selfloop transitions, 28 changer transitions 11/117 dead transitions. [2021-10-28 09:04:10,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 117 transitions, 640 flow [2021-10-28 09:04:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:04:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:04:10,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 939 transitions. [2021-10-28 09:04:10,647 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8808630393996247 [2021-10-28 09:04:10,647 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 939 transitions. [2021-10-28 09:04:10,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 939 transitions. [2021-10-28 09:04:10,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:10,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 939 transitions. [2021-10-28 09:04:10,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.23076923076923) internal successors, (939), 13 states have internal predecessors, (939), 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) [2021-10-28 09:04:10,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-10-28 09:04:10,661 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-10-28 09:04:10,662 INFO L186 Difference]: Start difference. First operand has 98 places, 82 transitions, 298 flow. Second operand 13 states and 939 transitions. [2021-10-28 09:04:10,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 117 transitions, 640 flow [2021-10-28 09:04:10,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 117 transitions, 633 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-28 09:04:10,672 INFO L242 Difference]: Finished difference. Result has 114 places, 99 transitions, 517 flow [2021-10-28 09:04:10,673 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=517, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2021-10-28 09:04:10,673 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 38 predicate places. [2021-10-28 09:04:10,673 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 517 flow [2021-10-28 09:04:10,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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) [2021-10-28 09:04:10,674 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:10,674 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] [2021-10-28 09:04:10,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:04:10,675 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:04:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:10,676 INFO L85 PathProgramCache]: Analyzing trace with hash 614554604, now seen corresponding path program 1 times [2021-10-28 09:04:10,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:10,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55444141] [2021-10-28 09:04:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:10,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:10,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:10,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55444141] [2021-10-28 09:04:10,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55444141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:10,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:10,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:04:10,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561294295] [2021-10-28 09:04:10,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:04:10,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:10,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:04:10,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:04:10,856 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-28 09:04:10,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 517 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2021-10-28 09:04:10,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:10,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-28 09:04:10,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:11,191 INFO L129 PetriNetUnfolder]: 170/546 cut-off events. [2021-10-28 09:04:11,195 INFO L130 PetriNetUnfolder]: For 2687/3405 co-relation queries the response was YES. [2021-10-28 09:04:11,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 546 events. 170/546 cut-off events. For 2687/3405 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3854 event pairs, 0 based on Foata normal form. 78/587 useless extension candidates. Maximal degree in co-relation 2341. Up to 196 conditions per place. [2021-10-28 09:04:11,204 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 32 changer transitions 19/125 dead transitions. [2021-10-28 09:04:11,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 125 transitions, 833 flow [2021-10-28 09:04:11,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:04:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 09:04:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1140 transitions. [2021-10-28 09:04:11,210 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8689024390243902 [2021-10-28 09:04:11,210 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1140 transitions. [2021-10-28 09:04:11,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1140 transitions. [2021-10-28 09:04:11,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:11,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1140 transitions. [2021-10-28 09:04:11,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.25) internal successors, (1140), 16 states have internal predecessors, (1140), 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) [2021-10-28 09:04:11,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 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) [2021-10-28 09:04:11,222 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 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) [2021-10-28 09:04:11,222 INFO L186 Difference]: Start difference. First operand has 114 places, 99 transitions, 517 flow. Second operand 16 states and 1140 transitions. [2021-10-28 09:04:11,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 125 transitions, 833 flow [2021-10-28 09:04:11,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 125 transitions, 749 flow, removed 34 selfloop flow, removed 8 redundant places. [2021-10-28 09:04:11,246 INFO L242 Difference]: Finished difference. Result has 128 places, 100 transitions, 547 flow [2021-10-28 09:04:11,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=547, PETRI_PLACES=128, PETRI_TRANSITIONS=100} [2021-10-28 09:04:11,247 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 52 predicate places. [2021-10-28 09:04:11,247 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 100 transitions, 547 flow [2021-10-28 09:04:11,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2021-10-28 09:04:11,248 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:11,248 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] [2021-10-28 09:04:11,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:04:11,249 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:04:11,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:11,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1900002659, now seen corresponding path program 1 times [2021-10-28 09:04:11,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:11,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046688922] [2021-10-28 09:04:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:11,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:11,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:11,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:11,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046688922] [2021-10-28 09:04:11,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046688922] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:11,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:11,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:04:11,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979009847] [2021-10-28 09:04:11,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:04:11,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:11,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:04:11,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:04:11,410 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 82 [2021-10-28 09:04:11,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 100 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 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) [2021-10-28 09:04:11,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:11,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 82 [2021-10-28 09:04:11,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:11,585 INFO L129 PetriNetUnfolder]: 101/523 cut-off events. [2021-10-28 09:04:11,585 INFO L130 PetriNetUnfolder]: For 1582/1679 co-relation queries the response was YES. [2021-10-28 09:04:11,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 523 events. 101/523 cut-off events. For 1582/1679 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4027 event pairs, 0 based on Foata normal form. 1/495 useless extension candidates. Maximal degree in co-relation 1712. Up to 81 conditions per place. [2021-10-28 09:04:11,590 INFO L132 encePairwiseOnDemand]: 76/82 looper letters, 7 selfloop transitions, 2 changer transitions 33/104 dead transitions. [2021-10-28 09:04:11,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 104 transitions, 587 flow [2021-10-28 09:04:11,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:04:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 09:04:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2021-10-28 09:04:11,593 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2021-10-28 09:04:11,594 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 429 transitions. [2021-10-28 09:04:11,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 429 transitions. [2021-10-28 09:04:11,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:11,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 429 transitions. [2021-10-28 09:04:11,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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) [2021-10-28 09:04:11,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2021-10-28 09:04:11,603 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2021-10-28 09:04:11,604 INFO L186 Difference]: Start difference. First operand has 128 places, 100 transitions, 547 flow. Second operand 6 states and 429 transitions. [2021-10-28 09:04:11,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 104 transitions, 587 flow [2021-10-28 09:04:11,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 104 transitions, 490 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-10-28 09:04:11,639 INFO L242 Difference]: Finished difference. Result has 119 places, 71 transitions, 256 flow [2021-10-28 09:04:11,639 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=119, PETRI_TRANSITIONS=71} [2021-10-28 09:04:11,640 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 43 predicate places. [2021-10-28 09:04:11,640 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 71 transitions, 256 flow [2021-10-28 09:04:11,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 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) [2021-10-28 09:04:11,641 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:04:11,641 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] [2021-10-28 09:04:11,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:04:11,642 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:04:11,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2136198657, now seen corresponding path program 2 times [2021-10-28 09:04:11,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:11,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786586473] [2021-10-28 09:04:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:11,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:11,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:04:11,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786586473] [2021-10-28 09:04:11,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786586473] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:11,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:11,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:04:11,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819993257] [2021-10-28 09:04:11,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:04:11,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:04:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:04:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:04:11,808 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-10-28 09:04:11,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 71 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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) [2021-10-28 09:04:11,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:04:11,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-10-28 09:04:11,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:04:11,906 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2021-10-28 09:04:11,906 INFO L130 PetriNetUnfolder]: For 57/58 co-relation queries the response was YES. [2021-10-28 09:04:11,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 80 events. 5/80 cut-off events. For 57/58 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 2/81 useless extension candidates. Maximal degree in co-relation 158. Up to 8 conditions per place. [2021-10-28 09:04:11,907 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-10-28 09:04:11,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 69 transitions, 278 flow [2021-10-28 09:04:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:04:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:04:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 519 transitions. [2021-10-28 09:04:11,910 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7911585365853658 [2021-10-28 09:04:11,910 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 519 transitions. [2021-10-28 09:04:11,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 519 transitions. [2021-10-28 09:04:11,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:04:11,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 519 transitions. [2021-10-28 09:04:11,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 64.875) internal successors, (519), 8 states have internal predecessors, (519), 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) [2021-10-28 09:04:11,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2021-10-28 09:04:11,916 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2021-10-28 09:04:11,916 INFO L186 Difference]: Start difference. First operand has 119 places, 71 transitions, 256 flow. Second operand 8 states and 519 transitions. [2021-10-28 09:04:11,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 69 transitions, 278 flow [2021-10-28 09:04:11,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 69 transitions, 198 flow, removed 16 selfloop flow, removed 24 redundant places. [2021-10-28 09:04:11,919 INFO L242 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2021-10-28 09:04:11,919 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2021-10-28 09:04:11,919 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2021-10-28 09:04:11,920 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2021-10-28 09:04:11,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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) [2021-10-28 09:04:11,923 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:04:11,923 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:04:11,924 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:04:11,924 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 09:04:11,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:04:11,927 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:11,930 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:04:11,930 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:04:11,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:04:11 BasicIcfg [2021-10-28 09:04:11,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:04:11,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:04:11,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:04:11,934 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:04:11,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:06" (3/4) ... [2021-10-28 09:04:11,938 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:04:11,944 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 09:04:11,944 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 09:04:11,944 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 09:04:11,951 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 09:04:11,951 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:04:11,951 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:04:11,951 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:04:12,010 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:04:12,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:04:12,012 INFO L168 Benchmark]: Toolchain (without parser) took 6728.87 ms. Allocated memory was 107.0 MB in the beginning and 178.3 MB in the end (delta: 71.3 MB). Free memory was 63.0 MB in the beginning and 98.9 MB in the end (delta: -35.8 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:12,013 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 107.0 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:04:12,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.70 ms. Allocated memory is still 107.0 MB. Free memory was 62.8 MB in the beginning and 71.8 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:12,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.52 ms. Allocated memory is still 107.0 MB. Free memory was 71.8 MB in the beginning and 69.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:12,014 INFO L168 Benchmark]: Boogie Preprocessor took 49.94 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 68.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:12,015 INFO L168 Benchmark]: RCFGBuilder took 519.17 ms. Allocated memory is still 107.0 MB. Free memory was 68.3 MB in the beginning and 56.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:12,015 INFO L168 Benchmark]: TraceAbstraction took 5295.52 ms. Allocated memory was 107.0 MB in the beginning and 178.3 MB in the end (delta: 71.3 MB). Free memory was 55.6 MB in the beginning and 102.0 MB in the end (delta: -46.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:12,016 INFO L168 Benchmark]: Witness Printer took 76.52 ms. Allocated memory is still 178.3 MB. Free memory was 102.0 MB in the beginning and 98.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:12,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 107.0 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 693.70 ms. Allocated memory is still 107.0 MB. Free memory was 62.8 MB in the beginning and 71.8 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.52 ms. Allocated memory is still 107.0 MB. Free memory was 71.8 MB in the beginning and 69.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.94 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 68.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 519.17 ms. Allocated memory is still 107.0 MB. Free memory was 68.3 MB in the beginning and 56.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5295.52 ms. Allocated memory was 107.0 MB in the beginning and 178.3 MB in the end (delta: 71.3 MB). Free memory was 55.6 MB in the beginning and 102.0 MB in the end (delta: -46.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * Witness Printer took 76.52 ms. Allocated memory is still 178.3 MB. Free memory was 102.0 MB in the beginning and 98.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 266 SDslu, 277 SDs, 0 SdLazy, 362 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=547occurred in iteration=6, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 426 ConstructedInterpolants, 0 QuantifiedInterpolants, 1558 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:04:12,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9841dccd-616d-46e4-8965-81f5bd16cf89/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...