./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:01:13,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:01:13,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:01:13,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:01:13,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:01:13,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:01:13,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:01:13,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:01:13,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:01:13,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:01:13,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:01:13,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:01:13,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:01:13,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:01:13,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:01:13,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:01:13,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:01:13,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:01:13,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:01:13,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:01:13,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:01:13,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:01:13,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:01:13,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:01:13,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:01:13,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:01:13,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:01:13,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:01:13,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:01:13,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:01:13,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:01:13,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:01:13,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:01:13,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:01:13,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:01:13,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:01:13,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:01:13,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:01:13,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:01:13,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:01:13,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:01:13,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:01:13,219 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:01:13,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:01:13,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:01:13,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:01:13,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:01:13,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:01:13,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:01:13,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:01:13,222 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:01:13,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:01:13,222 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:01:13,222 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:01:13,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:01:13,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:01:13,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:01:13,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:01:13,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:01:13,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:01:13,223 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:01:13,230 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:01:13,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:01:13,230 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:01:13,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:01:13,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:01:13,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:01:13,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:01:13,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:01:13,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:01:13,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:01:13,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:01:13,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:01:13,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:01:13,233 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:01:13,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:01:13,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:01:13,234 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_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 [2022-11-20 12:01:13,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:01:13,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:01:13,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:01:13,577 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:01:13,578 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:01:13,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-11-20 12:01:16,596 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:01:16,820 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:01:16,821 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-11-20 12:01:16,827 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/data/b43863c39/8bf0206867f04e4ca3ddd4ab78f29966/FLAG29883488c [2022-11-20 12:01:16,840 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/data/b43863c39/8bf0206867f04e4ca3ddd4ab78f29966 [2022-11-20 12:01:16,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:01:16,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:01:16,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:01:16,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:01:16,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:01:16,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:01:16" (1/1) ... [2022-11-20 12:01:16,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@900e9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:16, skipping insertion in model container [2022-11-20 12:01:16,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:01:16" (1/1) ... [2022-11-20 12:01:16,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:01:16,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:01:17,040 WARN L237 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_2448e219-0658-428d-9955-636a51e697ba/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-11-20 12:01:17,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:01:17,055 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:01:17,073 WARN L237 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_2448e219-0658-428d-9955-636a51e697ba/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-11-20 12:01:17,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:01:17,091 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:01:17,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17 WrapperNode [2022-11-20 12:01:17,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:01:17,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:01:17,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:01:17,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:01:17,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (1/1) ... [2022-11-20 12:01:17,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (1/1) ... [2022-11-20 12:01:17,133 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 134 [2022-11-20 12:01:17,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:01:17,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:01:17,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:01:17,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:01:17,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (1/1) ... [2022-11-20 12:01:17,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (1/1) ... [2022-11-20 12:01:17,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (1/1) ... [2022-11-20 12:01:17,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (1/1) ... [2022-11-20 12:01:17,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (1/1) ... [2022-11-20 12:01:17,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (1/1) ... [2022-11-20 12:01:17,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (1/1) ... [2022-11-20 12:01:17,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (1/1) ... [2022-11-20 12:01:17,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:01:17,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:01:17,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:01:17,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:01:17,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (1/1) ... [2022-11-20 12:01:17,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:01:17,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:17,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:01:17,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:01:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:01:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:01:17,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:01:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:01:17,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:01:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:01:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:01:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:01:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:01:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:01:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:01:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:01:17,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:01:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:01:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:01:17,338 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:01:17,511 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:01:17,524 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:01:17,811 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:01:17,967 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:01:17,967 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:01:17,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:01:17 BoogieIcfgContainer [2022-11-20 12:01:17,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:01:17,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:01:17,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:01:17,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:01:17,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:01:16" (1/3) ... [2022-11-20 12:01:17,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267abade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:01:17, skipping insertion in model container [2022-11-20 12:01:17,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:17" (2/3) ... [2022-11-20 12:01:17,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267abade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:01:17, skipping insertion in model container [2022-11-20 12:01:17,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:01:17" (3/3) ... [2022-11-20 12:01:17,979 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2022-11-20 12:01:17,987 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:01:17,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:01:17,998 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 12:01:17,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:01:18,057 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:01:18,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 127 transitions, 270 flow [2022-11-20 12:01:18,165 INFO L130 PetriNetUnfolder]: 9/125 cut-off events. [2022-11-20 12:01:18,167 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:01:18,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 125 events. 9/125 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-20 12:01:18,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 127 transitions, 270 flow [2022-11-20 12:01:18,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 106 transitions, 221 flow [2022-11-20 12:01:18,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:01:18,198 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5820acca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:01:18,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-20 12:01:18,217 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-20 12:01:18,217 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:01:18,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:18,218 INFO L209 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] [2022-11-20 12:01:18,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 12:01:18,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:18,225 INFO L85 PathProgramCache]: Analyzing trace with hash 650990987, now seen corresponding path program 1 times [2022-11-20 12:01:18,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:18,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609661947] [2022-11-20 12:01:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:18,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:18,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:18,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609661947] [2022-11-20 12:01:18,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609661947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:18,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:18,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:01:18,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642824061] [2022-11-20 12:01:18,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:18,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:01:18,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:18,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:01:18,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:01:18,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-20 12:01:18,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 106 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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) [2022-11-20 12:01:18,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:18,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-20 12:01:18,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:18,893 INFO L130 PetriNetUnfolder]: 19/166 cut-off events. [2022-11-20 12:01:18,893 INFO L131 PetriNetUnfolder]: For 20/22 co-relation queries the response was YES. [2022-11-20 12:01:18,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 166 events. 19/166 cut-off events. For 20/22 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 319 event pairs, 6 based on Foata normal form. 14/154 useless extension candidates. Maximal degree in co-relation 146. Up to 30 conditions per place. [2022-11-20 12:01:18,899 INFO L137 encePairwiseOnDemand]: 114/127 looper letters, 30 selfloop transitions, 4 changer transitions 2/114 dead transitions. [2022-11-20 12:01:18,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 314 flow [2022-11-20 12:01:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:01:18,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:01:18,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-11-20 12:01:18,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8472440944881889 [2022-11-20 12:01:18,921 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-11-20 12:01:18,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-11-20 12:01:18,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:18,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-11-20 12:01:18,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 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) [2022-11-20 12:01:18,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2022-11-20 12:01:18,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2022-11-20 12:01:18,943 INFO L175 Difference]: Start difference. First operand has 105 places, 106 transitions, 221 flow. Second operand 5 states and 538 transitions. [2022-11-20 12:01:18,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 314 flow [2022-11-20 12:01:18,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 114 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:01:18,978 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 228 flow [2022-11-20 12:01:18,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2022-11-20 12:01:18,985 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 2 predicate places. [2022-11-20 12:01:18,985 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 228 flow [2022-11-20 12:01:18,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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) [2022-11-20 12:01:18,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:18,986 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:18,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:01:18,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 12:01:18,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:18,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1788017742, now seen corresponding path program 1 times [2022-11-20 12:01:18,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:18,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491229218] [2022-11-20 12:01:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:18,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:19,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491229218] [2022-11-20 12:01:19,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491229218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:19,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:19,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:01:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647193226] [2022-11-20 12:01:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:19,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:01:19,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:19,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:01:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:01:19,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 127 [2022-11-20 12:01:19,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:19,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:19,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 127 [2022-11-20 12:01:19,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:19,619 INFO L130 PetriNetUnfolder]: 10/150 cut-off events. [2022-11-20 12:01:19,620 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-20 12:01:19,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 150 events. 10/150 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 243 event pairs, 3 based on Foata normal form. 4/140 useless extension candidates. Maximal degree in co-relation 91. Up to 27 conditions per place. [2022-11-20 12:01:19,623 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 19 selfloop transitions, 6 changer transitions 4/106 dead transitions. [2022-11-20 12:01:19,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 302 flow [2022-11-20 12:01:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:01:19,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:01:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 705 transitions. [2022-11-20 12:01:19,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7930258717660292 [2022-11-20 12:01:19,628 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 705 transitions. [2022-11-20 12:01:19,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 705 transitions. [2022-11-20 12:01:19,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:19,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 705 transitions. [2022-11-20 12:01:19,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.71428571428571) internal successors, (705), 7 states have internal predecessors, (705), 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) [2022-11-20 12:01:19,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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) [2022-11-20 12:01:19,636 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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) [2022-11-20 12:01:19,636 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 228 flow. Second operand 7 states and 705 transitions. [2022-11-20 12:01:19,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 302 flow [2022-11-20 12:01:19,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:01:19,642 INFO L231 Difference]: Finished difference. Result has 112 places, 100 transitions, 250 flow [2022-11-20 12:01:19,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2022-11-20 12:01:19,644 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 7 predicate places. [2022-11-20 12:01:19,644 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 250 flow [2022-11-20 12:01:19,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:19,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:19,646 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:19,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:01:19,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 12:01:19,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:19,649 INFO L85 PathProgramCache]: Analyzing trace with hash -124324023, now seen corresponding path program 1 times [2022-11-20 12:01:19,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:19,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275641186] [2022-11-20 12:01:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:19,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:19,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:19,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275641186] [2022-11-20 12:01:19,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275641186] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:01:19,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562412148] [2022-11-20 12:01:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:19,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:19,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:19,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:01:19,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:01:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:19,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:01:19,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:20,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:20,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562412148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:20,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:01:20,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:01:20,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109676786] [2022-11-20 12:01:20,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:20,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:01:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:01:20,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:01:20,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-20 12:01:20,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 100.66666666666667) internal successors, (1208), 12 states have internal predecessors, (1208), 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) [2022-11-20 12:01:20,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:20,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-20 12:01:20,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:20,605 INFO L130 PetriNetUnfolder]: 37/289 cut-off events. [2022-11-20 12:01:20,605 INFO L131 PetriNetUnfolder]: For 40/44 co-relation queries the response was YES. [2022-11-20 12:01:20,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 289 events. 37/289 cut-off events. For 40/44 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 829 event pairs, 12 based on Foata normal form. 3/252 useless extension candidates. Maximal degree in co-relation 427. Up to 49 conditions per place. [2022-11-20 12:01:20,611 INFO L137 encePairwiseOnDemand]: 120/127 looper letters, 55 selfloop transitions, 18 changer transitions 0/151 dead transitions. [2022-11-20 12:01:20,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 151 transitions, 562 flow [2022-11-20 12:01:20,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:01:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:01:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1840 transitions. [2022-11-20 12:01:20,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8048993875765529 [2022-11-20 12:01:20,626 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1840 transitions. [2022-11-20 12:01:20,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1840 transitions. [2022-11-20 12:01:20,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:20,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1840 transitions. [2022-11-20 12:01:20,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 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) [2022-11-20 12:01:20,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 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) [2022-11-20 12:01:20,641 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 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) [2022-11-20 12:01:20,641 INFO L175 Difference]: Start difference. First operand has 112 places, 100 transitions, 250 flow. Second operand 18 states and 1840 transitions. [2022-11-20 12:01:20,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 151 transitions, 562 flow [2022-11-20 12:01:20,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 151 transitions, 550 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:01:20,646 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 344 flow [2022-11-20 12:01:20,646 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=344, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2022-11-20 12:01:20,647 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 22 predicate places. [2022-11-20 12:01:20,647 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 344 flow [2022-11-20 12:01:20,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 100.66666666666667) internal successors, (1208), 12 states have internal predecessors, (1208), 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) [2022-11-20 12:01:20,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:20,648 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:20,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:20,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:20,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 12:01:20,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:20,855 INFO L85 PathProgramCache]: Analyzing trace with hash 440922962, now seen corresponding path program 1 times [2022-11-20 12:01:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:20,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044421232] [2022-11-20 12:01:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:20,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:20,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044421232] [2022-11-20 12:01:20,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044421232] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:01:20,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982313981] [2022-11-20 12:01:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:20,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:20,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:20,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:01:20,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:01:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:01:21,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:21,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:01:21,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982313981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:21,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:01:21,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:01:21,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264032896] [2022-11-20 12:01:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:21,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:01:21,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:21,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:01:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:01:21,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-20 12:01:21,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 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) [2022-11-20 12:01:21,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:21,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-20 12:01:21,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:21,211 INFO L130 PetriNetUnfolder]: 37/285 cut-off events. [2022-11-20 12:01:21,211 INFO L131 PetriNetUnfolder]: For 74/78 co-relation queries the response was YES. [2022-11-20 12:01:21,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 285 events. 37/285 cut-off events. For 74/78 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 806 event pairs, 12 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 385. Up to 84 conditions per place. [2022-11-20 12:01:21,214 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 23 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2022-11-20 12:01:21,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 112 transitions, 395 flow [2022-11-20 12:01:21,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:01:21,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:01:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 712 transitions. [2022-11-20 12:01:21,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8008998875140607 [2022-11-20 12:01:21,217 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 712 transitions. [2022-11-20 12:01:21,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 712 transitions. [2022-11-20 12:01:21,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:21,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 712 transitions. [2022-11-20 12:01:21,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 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) [2022-11-20 12:01:21,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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) [2022-11-20 12:01:21,223 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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) [2022-11-20 12:01:21,223 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 344 flow. Second operand 7 states and 712 transitions. [2022-11-20 12:01:21,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 112 transitions, 395 flow [2022-11-20 12:01:21,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 112 transitions, 363 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 12:01:21,232 INFO L231 Difference]: Finished difference. Result has 123 places, 108 transitions, 307 flow [2022-11-20 12:01:21,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=123, PETRI_TRANSITIONS=108} [2022-11-20 12:01:21,234 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 18 predicate places. [2022-11-20 12:01:21,235 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 108 transitions, 307 flow [2022-11-20 12:01:21,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 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) [2022-11-20 12:01:21,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:21,235 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:21,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:21,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:21,441 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 12:01:21,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:21,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1780772812, now seen corresponding path program 1 times [2022-11-20 12:01:21,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:21,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027860507] [2022-11-20 12:01:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:21,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:21,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:21,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027860507] [2022-11-20 12:01:21,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027860507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:01:21,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348638324] [2022-11-20 12:01:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:21,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:21,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:21,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:01:21,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:01:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:01:21,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:01:21,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:01:21,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348638324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:21,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:01:21,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 12:01:21,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567353389] [2022-11-20 12:01:21,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:21,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:01:21,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:21,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:01:21,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:21,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 127 [2022-11-20 12:01:21,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 108 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-11-20 12:01:21,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:21,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 127 [2022-11-20 12:01:21,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:21,909 INFO L130 PetriNetUnfolder]: 17/245 cut-off events. [2022-11-20 12:01:21,909 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-20 12:01:21,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 245 events. 17/245 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 553 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 305. Up to 32 conditions per place. [2022-11-20 12:01:21,911 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 3 selfloop transitions, 3 changer transitions 36/106 dead transitions. [2022-11-20 12:01:21,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 106 transitions, 321 flow [2022-11-20 12:01:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:01:21,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:01:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2022-11-20 12:01:21,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.844488188976378 [2022-11-20 12:01:21,914 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 429 transitions. [2022-11-20 12:01:21,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 429 transitions. [2022-11-20 12:01:21,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:21,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 429 transitions. [2022-11-20 12:01:21,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.25) internal successors, (429), 4 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) [2022-11-20 12:01:21,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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) [2022-11-20 12:01:21,917 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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) [2022-11-20 12:01:21,917 INFO L175 Difference]: Start difference. First operand has 123 places, 108 transitions, 307 flow. Second operand 4 states and 429 transitions. [2022-11-20 12:01:21,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 106 transitions, 321 flow [2022-11-20 12:01:21,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 106 transitions, 307 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:01:21,925 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 209 flow [2022-11-20 12:01:21,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=119, PETRI_TRANSITIONS=70} [2022-11-20 12:01:21,927 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 14 predicate places. [2022-11-20 12:01:21,928 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 209 flow [2022-11-20 12:01:21,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-11-20 12:01:21,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:21,928 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:21,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:22,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:22,134 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 12:01:22,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:22,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1047105803, now seen corresponding path program 2 times [2022-11-20 12:01:22,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:22,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635981772] [2022-11-20 12:01:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:22,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:22,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:22,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635981772] [2022-11-20 12:01:22,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635981772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:01:22,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628475697] [2022-11-20 12:01:22,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:01:22,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:22,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:22,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:01:22,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:01:22,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:01:22,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:01:22,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:01:22,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:01:22,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:01:22,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628475697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:22,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:01:22,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 12:01:22,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629626881] [2022-11-20 12:01:22,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:22,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:01:22,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:22,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:01:22,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:01:22,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 127 [2022-11-20 12:01:22,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 70 transitions, 209 flow. Second operand has 18 states, 18 states have (on average 91.61111111111111) internal successors, (1649), 18 states have internal predecessors, (1649), 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) [2022-11-20 12:01:22,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:22,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 127 [2022-11-20 12:01:22,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:23,387 INFO L130 PetriNetUnfolder]: 1/103 cut-off events. [2022-11-20 12:01:23,387 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-20 12:01:23,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 103 events. 1/103 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/105 useless extension candidates. Maximal degree in co-relation 200. Up to 7 conditions per place. [2022-11-20 12:01:23,387 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2022-11-20 12:01:23,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 379 flow [2022-11-20 12:01:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:01:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 12:01:23,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2169 transitions. [2022-11-20 12:01:23,393 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7116141732283464 [2022-11-20 12:01:23,393 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2169 transitions. [2022-11-20 12:01:23,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2169 transitions. [2022-11-20 12:01:23,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:23,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2169 transitions. [2022-11-20 12:01:23,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 90.375) internal successors, (2169), 24 states have internal predecessors, (2169), 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) [2022-11-20 12:01:23,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 127.0) internal successors, (3175), 25 states have internal predecessors, (3175), 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) [2022-11-20 12:01:23,406 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 127.0) internal successors, (3175), 25 states have internal predecessors, (3175), 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) [2022-11-20 12:01:23,406 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 209 flow. Second operand 24 states and 2169 transitions. [2022-11-20 12:01:23,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 379 flow [2022-11-20 12:01:23,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 363 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 12:01:23,409 INFO L231 Difference]: Finished difference. Result has 96 places, 0 transitions, 0 flow [2022-11-20 12:01:23,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=73, 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=24, PETRI_FLOW=0, PETRI_PLACES=96, PETRI_TRANSITIONS=0} [2022-11-20 12:01:23,409 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, -9 predicate places. [2022-11-20 12:01:23,410 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 0 transitions, 0 flow [2022-11-20 12:01:23,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 91.61111111111111) internal successors, (1649), 18 states have internal predecessors, (1649), 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) [2022-11-20 12:01:23,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-11-20 12:01:23,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-20 12:01:23,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-20 12:01:23,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-20 12:01:23,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-20 12:01:23,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-11-20 12:01:23,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2022-11-20 12:01:23,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-11-20 12:01:23,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-20 12:01:23,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-20 12:01:23,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-20 12:01:23,416 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-20 12:01:23,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:23,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:01:23,621 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-11-20 12:01:23,627 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:01:23,627 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:01:23,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:01:23 BasicIcfg [2022-11-20 12:01:23,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:01:23,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:01:23,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:01:23,633 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:01:23,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:01:17" (3/4) ... [2022-11-20 12:01:23,636 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:01:23,640 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 12:01:23,640 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 12:01:23,644 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 12:01:23,644 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:01:23,644 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:01:23,644 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:01:23,681 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:01:23,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:01:23,682 INFO L158 Benchmark]: Toolchain (without parser) took 6837.33ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 116.4MB in the beginning and 110.8MB in the end (delta: 5.6MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2022-11-20 12:01:23,682 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 119.5MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:01:23,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.22ms. Allocated memory is still 153.1MB. Free memory was 116.1MB in the beginning and 105.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:01:23,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.77ms. Allocated memory is still 153.1MB. Free memory was 105.1MB in the beginning and 103.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:01:23,683 INFO L158 Benchmark]: Boogie Preprocessor took 29.16ms. Allocated memory is still 153.1MB. Free memory was 103.1MB in the beginning and 101.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:01:23,683 INFO L158 Benchmark]: RCFGBuilder took 806.33ms. Allocated memory is still 153.1MB. Free memory was 101.7MB in the beginning and 103.1MB in the end (delta: -1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 12:01:23,684 INFO L158 Benchmark]: TraceAbstraction took 5659.80ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 102.4MB in the beginning and 114.6MB in the end (delta: -12.2MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2022-11-20 12:01:23,684 INFO L158 Benchmark]: Witness Printer took 48.42ms. Allocated memory is still 184.5MB. Free memory was 114.6MB in the beginning and 110.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:01:23,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 119.5MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.22ms. Allocated memory is still 153.1MB. Free memory was 116.1MB in the beginning and 105.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.77ms. Allocated memory is still 153.1MB. Free memory was 105.1MB in the beginning and 103.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.16ms. Allocated memory is still 153.1MB. Free memory was 103.1MB in the beginning and 101.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 806.33ms. Allocated memory is still 153.1MB. Free memory was 101.7MB in the beginning and 103.1MB in the end (delta: -1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5659.80ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 102.4MB in the beginning and 114.6MB in the end (delta: -12.2MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Witness Printer took 48.42ms. Allocated memory is still 184.5MB. Free memory was 114.6MB in the beginning and 110.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 139 locations, 12 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: 5.5s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 374 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 374 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 377 IncrementalHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 30 mSDtfsCounter, 377 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 510 GetRequests, 420 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, InterpolantAutomatonStates: 65, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 689 NumberOfCodeBlocks, 653 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 830 ConstructedInterpolants, 0 QuantifiedInterpolants, 1644 SizeOfPredicates, 13 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 124/268 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:01:23,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2448e219-0658-428d-9955-636a51e697ba/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE