./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro --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 b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --- 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-8393723 [2022-11-18 20:23:11,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:23:11,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:23:12,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:23:12,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:23:12,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:23:12,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:23:12,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:23:12,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:23:12,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:23:12,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:23:12,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:23:12,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:23:12,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:23:12,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:23:12,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:23:12,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:23:12,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:23:12,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:23:12,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:23:12,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:23:12,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:23:12,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:23:12,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:23:12,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:23:12,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:23:12,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:23:12,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:23:12,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:23:12,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:23:12,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:23:12,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:23:12,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:23:12,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:23:12,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:23:12,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:23:12,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:23:12,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:23:12,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:23:12,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:23:12,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:23:12,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:23:12,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:23:12,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:23:12,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:23:12,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:23:12,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:23:12,147 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:23:12,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:23:12,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:23:12,149 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:23:12,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:23:12,150 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:23:12,150 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:23:12,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:23:12,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:23:12,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:23:12,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:23:12,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:23:12,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:23:12,152 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:23:12,152 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:23:12,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:23:12,153 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:23:12,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:23:12,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:23:12,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:23:12,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:23:12,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:23:12,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:23:12,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:23:12,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:23:12,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:23:12,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:23:12,158 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:23:12,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:23:12,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:23:12,158 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_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 [2022-11-18 20:23:12,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:23:12,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:23:12,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:23:12,477 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:23:12,478 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:23:12,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-18 20:23:12,568 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/data/af36d3258/8180ca52b16047c786414c8ca39e325a/FLAGe6b301acf [2022-11-18 20:23:13,024 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:23:13,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-18 20:23:13,034 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/data/af36d3258/8180ca52b16047c786414c8ca39e325a/FLAGe6b301acf [2022-11-18 20:23:13,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/data/af36d3258/8180ca52b16047c786414c8ca39e325a [2022-11-18 20:23:13,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:23:13,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:23:13,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:23:13,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:23:13,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:23:13,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59766cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13, skipping insertion in model container [2022-11-18 20:23:13,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:23:13,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:23:13,707 WARN L234 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_56ce12fd-aedc-4709-ab1b-b087e15dc976/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-18 20:23:13,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:23:13,746 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:23:13,800 WARN L234 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_56ce12fd-aedc-4709-ab1b-b087e15dc976/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-18 20:23:13,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:23:13,844 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:23:13,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13 WrapperNode [2022-11-18 20:23:13,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:23:13,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:23:13,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:23:13,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:23:13,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,929 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 329 [2022-11-18 20:23:13,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:23:13,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:23:13,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:23:13,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:23:13,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,990 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:13,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:23:13,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:23:13,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:23:13,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:23:14,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (1/1) ... [2022-11-18 20:23:14,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:23:14,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:14,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:23:14,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:23:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:23:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:23:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:23:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:23:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:23:14,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:23:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:23:14,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:23:14,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:23:14,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:23:14,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:23:14,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:23:14,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:23:14,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:23:14,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:23:14,085 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:23:14,206 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:23:14,208 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:23:14,951 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:23:14,971 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:23:14,972 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:23:14,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:23:14 BoogieIcfgContainer [2022-11-18 20:23:14,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:23:14,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:23:14,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:23:14,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:23:14,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:23:13" (1/3) ... [2022-11-18 20:23:14,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11567378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:23:14, skipping insertion in model container [2022-11-18 20:23:14,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:13" (2/3) ... [2022-11-18 20:23:14,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11567378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:23:14, skipping insertion in model container [2022-11-18 20:23:14,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:23:14" (3/3) ... [2022-11-18 20:23:14,991 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2022-11-18 20:23:15,000 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:23:15,011 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:23:15,012 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-18 20:23:15,012 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:23:15,178 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:23:15,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 453 transitions, 930 flow [2022-11-18 20:23:15,436 INFO L130 PetriNetUnfolder]: 35/450 cut-off events. [2022-11-18 20:23:15,437 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:23:15,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 450 events. 35/450 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 938 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 336. Up to 2 conditions per place. [2022-11-18 20:23:15,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 453 transitions, 930 flow [2022-11-18 20:23:15,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 421 transitions, 857 flow [2022-11-18 20:23:15,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:23:15,502 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;@5d52f797, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:23:15,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2022-11-18 20:23:15,523 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-18 20:23:15,523 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:23:15,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:15,524 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] [2022-11-18 20:23:15,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:15,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1121090442, now seen corresponding path program 1 times [2022-11-18 20:23:15,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:15,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948125855] [2022-11-18 20:23:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:15,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:16,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:16,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948125855] [2022-11-18 20:23:16,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948125855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:16,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:16,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:16,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838998125] [2022-11-18 20:23:16,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:16,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:16,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:16,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 453 [2022-11-18 20:23:16,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 421 transitions, 857 flow. Second operand has 4 states, 4 states have (on average 388.5) internal successors, (1554), 4 states have internal predecessors, (1554), 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) [2022-11-18 20:23:16,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:16,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 453 [2022-11-18 20:23:16,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:16,525 INFO L130 PetriNetUnfolder]: 23/709 cut-off events. [2022-11-18 20:23:16,525 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 20:23:16,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 709 events. 23/709 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2754 event pairs, 0 based on Foata normal form. 52/659 useless extension candidates. Maximal degree in co-relation 613. Up to 44 conditions per place. [2022-11-18 20:23:16,542 INFO L137 encePairwiseOnDemand]: 412/453 looper letters, 58 selfloop transitions, 14 changer transitions 6/431 dead transitions. [2022-11-18 20:23:16,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 431 transitions, 1036 flow [2022-11-18 20:23:16,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2049 transitions. [2022-11-18 20:23:16,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.904635761589404 [2022-11-18 20:23:16,576 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2049 transitions. [2022-11-18 20:23:16,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2049 transitions. [2022-11-18 20:23:16,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:16,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2049 transitions. [2022-11-18 20:23:16,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 409.8) internal successors, (2049), 5 states have internal predecessors, (2049), 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) [2022-11-18 20:23:16,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 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) [2022-11-18 20:23:16,652 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 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) [2022-11-18 20:23:16,654 INFO L175 Difference]: Start difference. First operand has 398 places, 421 transitions, 857 flow. Second operand 5 states and 2049 transitions. [2022-11-18 20:23:16,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 431 transitions, 1036 flow [2022-11-18 20:23:16,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 431 transitions, 1018 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:23:16,678 INFO L231 Difference]: Finished difference. Result has 400 places, 405 transitions, 898 flow [2022-11-18 20:23:16,681 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=898, PETRI_PLACES=400, PETRI_TRANSITIONS=405} [2022-11-18 20:23:16,686 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 2 predicate places. [2022-11-18 20:23:16,687 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 405 transitions, 898 flow [2022-11-18 20:23:16,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 388.5) internal successors, (1554), 4 states have internal predecessors, (1554), 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) [2022-11-18 20:23:16,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:16,689 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] [2022-11-18 20:23:16,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:23:16,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:16,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1872408818, now seen corresponding path program 1 times [2022-11-18 20:23:16,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:16,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600374098] [2022-11-18 20:23:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:16,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:16,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:16,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600374098] [2022-11-18 20:23:16,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600374098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:17,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606687580] [2022-11-18 20:23:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:17,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:17,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:17,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:17,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:23:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:17,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:23:17,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:17,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:17,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606687580] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:23:17,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:23:17,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:23:17,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879879671] [2022-11-18 20:23:17,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:23:17,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:23:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:17,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:23:17,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:23:17,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 453 [2022-11-18 20:23:17,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 405 transitions, 898 flow. Second operand has 12 states, 12 states have (on average 389.6666666666667) internal successors, (4676), 12 states have internal predecessors, (4676), 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) [2022-11-18 20:23:17,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:17,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 453 [2022-11-18 20:23:17,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:18,376 INFO L130 PetriNetUnfolder]: 56/1636 cut-off events. [2022-11-18 20:23:18,377 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 20:23:18,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 1636 events. 56/1636 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 10015 event pairs, 0 based on Foata normal form. 9/1420 useless extension candidates. Maximal degree in co-relation 1176. Up to 35 conditions per place. [2022-11-18 20:23:18,413 INFO L137 encePairwiseOnDemand]: 430/453 looper letters, 109 selfloop transitions, 62 changer transitions 0/524 dead transitions. [2022-11-18 20:23:18,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 524 transitions, 1580 flow [2022-11-18 20:23:18,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:23:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:23:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7146 transitions. [2022-11-18 20:23:18,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763796909492274 [2022-11-18 20:23:18,429 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7146 transitions. [2022-11-18 20:23:18,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7146 transitions. [2022-11-18 20:23:18,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:18,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7146 transitions. [2022-11-18 20:23:18,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 397.0) internal successors, (7146), 18 states have internal predecessors, (7146), 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) [2022-11-18 20:23:18,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 453.0) internal successors, (8607), 19 states have internal predecessors, (8607), 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) [2022-11-18 20:23:18,472 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 453.0) internal successors, (8607), 19 states have internal predecessors, (8607), 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) [2022-11-18 20:23:18,473 INFO L175 Difference]: Start difference. First operand has 400 places, 405 transitions, 898 flow. Second operand 18 states and 7146 transitions. [2022-11-18 20:23:18,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 524 transitions, 1580 flow [2022-11-18 20:23:18,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 524 transitions, 1572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:23:18,485 INFO L231 Difference]: Finished difference. Result has 414 places, 447 transitions, 1260 flow [2022-11-18 20:23:18,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1260, PETRI_PLACES=414, PETRI_TRANSITIONS=447} [2022-11-18 20:23:18,487 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 16 predicate places. [2022-11-18 20:23:18,487 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 447 transitions, 1260 flow [2022-11-18 20:23:18,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 389.6666666666667) internal successors, (4676), 12 states have internal predecessors, (4676), 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) [2022-11-18 20:23:18,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:18,491 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] [2022-11-18 20:23:18,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:23:18,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:18,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:18,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:18,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2084868133, now seen corresponding path program 1 times [2022-11-18 20:23:18,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:18,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822561716] [2022-11-18 20:23:18,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:18,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:18,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:18,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822561716] [2022-11-18 20:23:18,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822561716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:18,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542109074] [2022-11-18 20:23:18,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:18,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:18,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:18,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:18,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:23:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:23:18,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:19,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:19,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542109074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:19,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:19,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:23:19,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966392127] [2022-11-18 20:23:19,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:19,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:23:19,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 453 [2022-11-18 20:23:19,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 447 transitions, 1260 flow. Second operand has 6 states, 6 states have (on average 389.3333333333333) internal successors, (2336), 6 states have internal predecessors, (2336), 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) [2022-11-18 20:23:19,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:19,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 453 [2022-11-18 20:23:19,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:19,783 INFO L130 PetriNetUnfolder]: 56/1624 cut-off events. [2022-11-18 20:23:19,783 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-18 20:23:19,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 1624 events. 56/1624 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9910 event pairs, 0 based on Foata normal form. 12/1411 useless extension candidates. Maximal degree in co-relation 1529. Up to 68 conditions per place. [2022-11-18 20:23:19,825 INFO L137 encePairwiseOnDemand]: 436/453 looper letters, 59 selfloop transitions, 43 changer transitions 0/455 dead transitions. [2022-11-18 20:23:19,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 455 transitions, 1435 flow [2022-11-18 20:23:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:23:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:23:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2781 transitions. [2022-11-18 20:23:19,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8770104068117314 [2022-11-18 20:23:19,831 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2781 transitions. [2022-11-18 20:23:19,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2781 transitions. [2022-11-18 20:23:19,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:19,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2781 transitions. [2022-11-18 20:23:19,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 397.2857142857143) internal successors, (2781), 7 states have internal predecessors, (2781), 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) [2022-11-18 20:23:19,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 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) [2022-11-18 20:23:19,850 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 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) [2022-11-18 20:23:19,851 INFO L175 Difference]: Start difference. First operand has 414 places, 447 transitions, 1260 flow. Second operand 7 states and 2781 transitions. [2022-11-18 20:23:19,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 455 transitions, 1435 flow [2022-11-18 20:23:19,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 455 transitions, 1319 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 20:23:19,869 INFO L231 Difference]: Finished difference. Result has 408 places, 435 transitions, 1149 flow [2022-11-18 20:23:19,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1149, PETRI_PLACES=408, PETRI_TRANSITIONS=435} [2022-11-18 20:23:19,872 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 10 predicate places. [2022-11-18 20:23:19,873 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 435 transitions, 1149 flow [2022-11-18 20:23:19,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 389.3333333333333) internal successors, (2336), 6 states have internal predecessors, (2336), 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) [2022-11-18 20:23:19,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:19,874 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] [2022-11-18 20:23:19,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:20,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 20:23:20,080 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:20,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:20,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1756742794, now seen corresponding path program 2 times [2022-11-18 20:23:20,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:20,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656993966] [2022-11-18 20:23:20,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:20,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:20,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:20,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656993966] [2022-11-18 20:23:20,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656993966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:20,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387743171] [2022-11-18 20:23:20,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:23:20,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:20,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:20,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:20,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:23:20,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:23:20,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:23:20,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:23:20,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:23:20,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:23:20,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387743171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:23:20,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:23:20,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-18 20:23:20,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517505375] [2022-11-18 20:23:20,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:23:20,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:23:20,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:23:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:23:20,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 453 [2022-11-18 20:23:20,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 435 transitions, 1149 flow. Second operand has 18 states, 18 states have (on average 376.0) internal successors, (6768), 18 states have internal predecessors, (6768), 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) [2022-11-18 20:23:20,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:20,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 453 [2022-11-18 20:23:20,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:22,204 INFO L130 PetriNetUnfolder]: 67/1909 cut-off events. [2022-11-18 20:23:22,204 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-11-18 20:23:22,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1909 events. 67/1909 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 12365 event pairs, 0 based on Foata normal form. 3/1642 useless extension candidates. Maximal degree in co-relation 1541. Up to 22 conditions per place. [2022-11-18 20:23:22,249 INFO L137 encePairwiseOnDemand]: 429/453 looper letters, 130 selfloop transitions, 67 changer transitions 0/535 dead transitions. [2022-11-18 20:23:22,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 535 transitions, 1790 flow [2022-11-18 20:23:22,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:23:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 20:23:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 7640 transitions. [2022-11-18 20:23:22,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8432671081677704 [2022-11-18 20:23:22,268 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 7640 transitions. [2022-11-18 20:23:22,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 7640 transitions. [2022-11-18 20:23:22,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:22,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 7640 transitions. [2022-11-18 20:23:22,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 382.0) internal successors, (7640), 20 states have internal predecessors, (7640), 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) [2022-11-18 20:23:22,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 453.0) internal successors, (9513), 21 states have internal predecessors, (9513), 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) [2022-11-18 20:23:22,318 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 453.0) internal successors, (9513), 21 states have internal predecessors, (9513), 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) [2022-11-18 20:23:22,318 INFO L175 Difference]: Start difference. First operand has 408 places, 435 transitions, 1149 flow. Second operand 20 states and 7640 transitions. [2022-11-18 20:23:22,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 535 transitions, 1790 flow [2022-11-18 20:23:22,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 535 transitions, 1707 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:23:22,335 INFO L231 Difference]: Finished difference. Result has 416 places, 440 transitions, 1223 flow [2022-11-18 20:23:22,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1223, PETRI_PLACES=416, PETRI_TRANSITIONS=440} [2022-11-18 20:23:22,338 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 18 predicate places. [2022-11-18 20:23:22,338 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 440 transitions, 1223 flow [2022-11-18 20:23:22,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 376.0) internal successors, (6768), 18 states have internal predecessors, (6768), 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) [2022-11-18 20:23:22,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:22,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:22,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:22,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:22,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:22,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash -29602295, now seen corresponding path program 1 times [2022-11-18 20:23:22,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:22,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766333888] [2022-11-18 20:23:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:22,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:22,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:22,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766333888] [2022-11-18 20:23:22,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766333888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:22,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:22,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:22,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873411004] [2022-11-18 20:23:22,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:22,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:23:22,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:22,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:23:22,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:23:22,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 453 [2022-11-18 20:23:22,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 440 transitions, 1223 flow. Second operand has 5 states, 5 states have (on average 392.0) internal successors, (1960), 5 states have internal predecessors, (1960), 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) [2022-11-18 20:23:22,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:22,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 453 [2022-11-18 20:23:22,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:23,335 INFO L130 PetriNetUnfolder]: 56/1627 cut-off events. [2022-11-18 20:23:23,336 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-11-18 20:23:23,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 1627 events. 56/1627 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9643 event pairs, 0 based on Foata normal form. 3/1420 useless extension candidates. Maximal degree in co-relation 292. Up to 116 conditions per place. [2022-11-18 20:23:23,377 INFO L137 encePairwiseOnDemand]: 438/453 looper letters, 62 selfloop transitions, 20 changer transitions 0/444 dead transitions. [2022-11-18 20:23:23,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 444 transitions, 1391 flow [2022-11-18 20:23:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:23,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1991 transitions. [2022-11-18 20:23:23,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.879028697571744 [2022-11-18 20:23:23,382 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1991 transitions. [2022-11-18 20:23:23,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1991 transitions. [2022-11-18 20:23:23,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:23,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1991 transitions. [2022-11-18 20:23:23,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 398.2) internal successors, (1991), 5 states have internal predecessors, (1991), 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) [2022-11-18 20:23:23,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 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) [2022-11-18 20:23:23,395 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 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) [2022-11-18 20:23:23,395 INFO L175 Difference]: Start difference. First operand has 416 places, 440 transitions, 1223 flow. Second operand 5 states and 1991 transitions. [2022-11-18 20:23:23,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 444 transitions, 1391 flow [2022-11-18 20:23:23,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 444 transitions, 1247 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-18 20:23:23,407 INFO L231 Difference]: Finished difference. Result has 406 places, 438 transitions, 1117 flow [2022-11-18 20:23:23,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1117, PETRI_PLACES=406, PETRI_TRANSITIONS=438} [2022-11-18 20:23:23,409 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 8 predicate places. [2022-11-18 20:23:23,409 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 438 transitions, 1117 flow [2022-11-18 20:23:23,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 392.0) internal successors, (1960), 5 states have internal predecessors, (1960), 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) [2022-11-18 20:23:23,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:23,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:23,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:23:23,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:23,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:23,412 INFO L85 PathProgramCache]: Analyzing trace with hash -435126156, now seen corresponding path program 1 times [2022-11-18 20:23:23,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:23,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657298535] [2022-11-18 20:23:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:23,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:23:23,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:23,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657298535] [2022-11-18 20:23:23,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657298535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:23,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597865247] [2022-11-18 20:23:23,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:23,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:23,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:23,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:23,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:23:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:23:23,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:23:23,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:23:24,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597865247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:23:24,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:23:24,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:23:24,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217144902] [2022-11-18 20:23:24,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:23:24,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:23:24,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:24,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:23:24,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:23:24,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 453 [2022-11-18 20:23:24,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 438 transitions, 1117 flow. Second operand has 15 states, 15 states have (on average 376.6666666666667) internal successors, (5650), 15 states have internal predecessors, (5650), 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) [2022-11-18 20:23:24,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:24,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 453 [2022-11-18 20:23:24,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:24,872 INFO L130 PetriNetUnfolder]: 34/1063 cut-off events. [2022-11-18 20:23:24,872 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-18 20:23:24,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 1063 events. 34/1063 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4797 event pairs, 0 based on Foata normal form. 6/943 useless extension candidates. Maximal degree in co-relation 915. Up to 60 conditions per place. [2022-11-18 20:23:24,893 INFO L137 encePairwiseOnDemand]: 429/453 looper letters, 77 selfloop transitions, 46 changer transitions 0/461 dead transitions. [2022-11-18 20:23:24,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 461 transitions, 1419 flow [2022-11-18 20:23:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:23:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:23:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4193 transitions. [2022-11-18 20:23:24,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8414609672887818 [2022-11-18 20:23:24,903 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4193 transitions. [2022-11-18 20:23:24,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4193 transitions. [2022-11-18 20:23:24,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:24,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4193 transitions. [2022-11-18 20:23:24,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 381.1818181818182) internal successors, (4193), 11 states have internal predecessors, (4193), 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) [2022-11-18 20:23:24,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 453.0) internal successors, (5436), 12 states have internal predecessors, (5436), 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) [2022-11-18 20:23:24,926 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 453.0) internal successors, (5436), 12 states have internal predecessors, (5436), 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) [2022-11-18 20:23:24,926 INFO L175 Difference]: Start difference. First operand has 406 places, 438 transitions, 1117 flow. Second operand 11 states and 4193 transitions. [2022-11-18 20:23:24,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 461 transitions, 1419 flow [2022-11-18 20:23:24,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 461 transitions, 1387 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:23:24,940 INFO L231 Difference]: Finished difference. Result has 415 places, 437 transitions, 1230 flow [2022-11-18 20:23:24,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1230, PETRI_PLACES=415, PETRI_TRANSITIONS=437} [2022-11-18 20:23:24,944 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 17 predicate places. [2022-11-18 20:23:24,944 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 437 transitions, 1230 flow [2022-11-18 20:23:24,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 376.6666666666667) internal successors, (5650), 15 states have internal predecessors, (5650), 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) [2022-11-18 20:23:24,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:24,947 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:24,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:25,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:25,154 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:25,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:25,154 INFO L85 PathProgramCache]: Analyzing trace with hash -989018924, now seen corresponding path program 2 times [2022-11-18 20:23:25,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:25,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3761042] [2022-11-18 20:23:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:25,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 20:23:25,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:25,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3761042] [2022-11-18 20:23:25,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3761042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:25,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332823591] [2022-11-18 20:23:25,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:23:25,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:25,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:25,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:25,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:23:25,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:23:25,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:23:25,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:23:25,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 20:23:26,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 20:23:26,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332823591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:23:26,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:23:26,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-18 20:23:26,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118009392] [2022-11-18 20:23:26,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:23:26,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:23:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:23:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:23:26,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 453 [2022-11-18 20:23:26,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 437 transitions, 1230 flow. Second operand has 22 states, 22 states have (on average 378.72727272727275) internal successors, (8332), 22 states have internal predecessors, (8332), 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) [2022-11-18 20:23:26,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:26,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 453 [2022-11-18 20:23:26,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:27,068 INFO L130 PetriNetUnfolder]: 12/499 cut-off events. [2022-11-18 20:23:27,069 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-18 20:23:27,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 499 events. 12/499 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 797 event pairs, 0 based on Foata normal form. 6/463 useless extension candidates. Maximal degree in co-relation 281. Up to 28 conditions per place. [2022-11-18 20:23:27,077 INFO L137 encePairwiseOnDemand]: 429/453 looper letters, 86 selfloop transitions, 51 changer transitions 0/475 dead transitions. [2022-11-18 20:23:27,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 475 transitions, 1620 flow [2022-11-18 20:23:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:23:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:23:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6467 transitions. [2022-11-18 20:23:27,090 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8397610699909103 [2022-11-18 20:23:27,091 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6467 transitions. [2022-11-18 20:23:27,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6467 transitions. [2022-11-18 20:23:27,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:27,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6467 transitions. [2022-11-18 20:23:27,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 380.4117647058824) internal successors, (6467), 17 states have internal predecessors, (6467), 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) [2022-11-18 20:23:27,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 453.0) internal successors, (8154), 18 states have internal predecessors, (8154), 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) [2022-11-18 20:23:27,127 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 453.0) internal successors, (8154), 18 states have internal predecessors, (8154), 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) [2022-11-18 20:23:27,127 INFO L175 Difference]: Start difference. First operand has 415 places, 437 transitions, 1230 flow. Second operand 17 states and 6467 transitions. [2022-11-18 20:23:27,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 475 transitions, 1620 flow [2022-11-18 20:23:27,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 475 transitions, 1538 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-18 20:23:27,140 INFO L231 Difference]: Finished difference. Result has 424 places, 433 transitions, 1264 flow [2022-11-18 20:23:27,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1264, PETRI_PLACES=424, PETRI_TRANSITIONS=433} [2022-11-18 20:23:27,142 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 26 predicate places. [2022-11-18 20:23:27,142 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 433 transitions, 1264 flow [2022-11-18 20:23:27,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 378.72727272727275) internal successors, (8332), 22 states have internal predecessors, (8332), 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) [2022-11-18 20:23:27,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:27,146 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:27,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:27,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:23:27,357 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:27,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:27,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1564638924, now seen corresponding path program 3 times [2022-11-18 20:23:27,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:27,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527960558] [2022-11-18 20:23:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:27,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 27 proven. 187 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:23:32,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:32,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527960558] [2022-11-18 20:23:32,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527960558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:32,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562054025] [2022-11-18 20:23:32,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:23:32,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:32,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:32,753 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:32,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:23:33,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:23:33,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:23:33,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-18 20:23:33,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:33,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:23:34,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:23:34,427 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 20:23:34,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2022-11-18 20:23:34,904 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 20:23:34,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-18 20:23:35,379 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 20:23:35,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-18 20:23:35,850 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 20:23:35,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-18 20:23:36,798 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:23:36,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:23:36,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:37,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:37,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:37,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:37,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:37,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:23:37,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:37,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:23:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 37 proven. 124 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-18 20:23:37,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:24:04,337 INFO L321 Elim1Store]: treesize reduction 236, result has 35.3 percent of original size [2022-11-18 20:24:04,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 142 [2022-11-18 20:24:04,371 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:24:04,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 212 [2022-11-18 20:24:04,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 102 [2022-11-18 20:24:04,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2022-11-18 20:24:07,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:24:07,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2022-11-18 20:24:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-18 20:24:08,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562054025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:24:08,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:24:08,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 41] total 104 [2022-11-18 20:24:08,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757698241] [2022-11-18 20:24:08,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:24:08,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-11-18 20:24:08,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:08,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-11-18 20:24:08,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=759, Invalid=10094, Unknown=67, NotChecked=0, Total=10920 [2022-11-18 20:24:08,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 453 [2022-11-18 20:24:08,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 433 transitions, 1264 flow. Second operand has 105 states, 105 states have (on average 300.12380952380954) internal successors, (31513), 105 states have internal predecessors, (31513), 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) [2022-11-18 20:24:08,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:08,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 453 [2022-11-18 20:24:08,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:26,230 INFO L130 PetriNetUnfolder]: 5479/22375 cut-off events. [2022-11-18 20:24:26,231 INFO L131 PetriNetUnfolder]: For 194/498 co-relation queries the response was YES. [2022-11-18 20:24:26,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30723 conditions, 22375 events. 5479/22375 cut-off events. For 194/498 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 274227 event pairs, 956 based on Foata normal form. 2/18055 useless extension candidates. Maximal degree in co-relation 30082. Up to 1874 conditions per place. [2022-11-18 20:24:26,618 INFO L137 encePairwiseOnDemand]: 390/453 looper letters, 363 selfloop transitions, 131 changer transitions 0/760 dead transitions. [2022-11-18 20:24:26,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 760 transitions, 2975 flow [2022-11-18 20:24:26,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-18 20:24:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-11-18 20:24:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 22690 transitions. [2022-11-18 20:24:26,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6678440029433407 [2022-11-18 20:24:26,658 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 22690 transitions. [2022-11-18 20:24:26,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 22690 transitions. [2022-11-18 20:24:26,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:26,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 22690 transitions. [2022-11-18 20:24:26,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 302.53333333333336) internal successors, (22690), 75 states have internal predecessors, (22690), 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) [2022-11-18 20:24:26,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 453.0) internal successors, (34428), 76 states have internal predecessors, (34428), 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) [2022-11-18 20:24:26,755 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 453.0) internal successors, (34428), 76 states have internal predecessors, (34428), 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) [2022-11-18 20:24:26,755 INFO L175 Difference]: Start difference. First operand has 424 places, 433 transitions, 1264 flow. Second operand 75 states and 22690 transitions. [2022-11-18 20:24:26,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 760 transitions, 2975 flow [2022-11-18 20:24:26,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 760 transitions, 2873 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-18 20:24:26,772 INFO L231 Difference]: Finished difference. Result has 508 places, 490 transitions, 1734 flow [2022-11-18 20:24:26,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=1734, PETRI_PLACES=508, PETRI_TRANSITIONS=490} [2022-11-18 20:24:26,776 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 110 predicate places. [2022-11-18 20:24:26,776 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 490 transitions, 1734 flow [2022-11-18 20:24:26,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 300.12380952380954) internal successors, (31513), 105 states have internal predecessors, (31513), 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) [2022-11-18 20:24:26,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:26,785 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:26,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:26,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:24:26,993 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:24:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1259165271, now seen corresponding path program 1 times [2022-11-18 20:24:26,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:26,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676842121] [2022-11-18 20:24:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:26,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-18 20:24:27,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:27,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676842121] [2022-11-18 20:24:27,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676842121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:27,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:27,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:27,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014297846] [2022-11-18 20:24:27,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:27,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:27,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:27,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:27,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:27,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 453 [2022-11-18 20:24:27,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 490 transitions, 1734 flow. Second operand has 4 states, 4 states have (on average 401.75) internal successors, (1607), 4 states have internal predecessors, (1607), 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) [2022-11-18 20:24:27,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:27,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 453 [2022-11-18 20:24:27,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:28,421 INFO L130 PetriNetUnfolder]: 217/2581 cut-off events. [2022-11-18 20:24:28,421 INFO L131 PetriNetUnfolder]: For 565/567 co-relation queries the response was YES. [2022-11-18 20:24:28,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 2581 events. 217/2581 cut-off events. For 565/567 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 19008 event pairs, 60 based on Foata normal form. 17/2230 useless extension candidates. Maximal degree in co-relation 3582. Up to 230 conditions per place. [2022-11-18 20:24:28,485 INFO L137 encePairwiseOnDemand]: 446/453 looper letters, 52 selfloop transitions, 8 changer transitions 0/500 dead transitions. [2022-11-18 20:24:28,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 500 transitions, 1864 flow [2022-11-18 20:24:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:24:28,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:24:28,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1645 transitions. [2022-11-18 20:24:28,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9078366445916115 [2022-11-18 20:24:28,488 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1645 transitions. [2022-11-18 20:24:28,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1645 transitions. [2022-11-18 20:24:28,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:28,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1645 transitions. [2022-11-18 20:24:28,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 411.25) internal successors, (1645), 4 states have internal predecessors, (1645), 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) [2022-11-18 20:24:28,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 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) [2022-11-18 20:24:28,495 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 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) [2022-11-18 20:24:28,495 INFO L175 Difference]: Start difference. First operand has 508 places, 490 transitions, 1734 flow. Second operand 4 states and 1645 transitions. [2022-11-18 20:24:28,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 500 transitions, 1864 flow [2022-11-18 20:24:28,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 500 transitions, 1730 flow, removed 0 selfloop flow, removed 31 redundant places. [2022-11-18 20:24:28,510 INFO L231 Difference]: Finished difference. Result has 482 places, 487 transitions, 1620 flow [2022-11-18 20:24:28,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1620, PETRI_PLACES=482, PETRI_TRANSITIONS=487} [2022-11-18 20:24:28,512 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 84 predicate places. [2022-11-18 20:24:28,513 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 487 transitions, 1620 flow [2022-11-18 20:24:28,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 401.75) internal successors, (1607), 4 states have internal predecessors, (1607), 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) [2022-11-18 20:24:28,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:28,514 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:28,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:24:28,514 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:24:28,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:28,515 INFO L85 PathProgramCache]: Analyzing trace with hash -674949534, now seen corresponding path program 1 times [2022-11-18 20:24:28,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:28,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325534405] [2022-11-18 20:24:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 11 proven. 108 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-18 20:24:32,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:32,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325534405] [2022-11-18 20:24:32,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325534405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:32,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216342607] [2022-11-18 20:24:32,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:32,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:32,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:32,764 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:32,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:24:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:32,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-18 20:24:32,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:33,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:24:33,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:24:34,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:34,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:24:34,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:34,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:24:34,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:34,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:24:34,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:34,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:24:35,674 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:24:35,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:24:35,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:36,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:36,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:36,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:36,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:36,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:36,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:36,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:36,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:37,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:24:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 48 proven. 76 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-18 20:24:37,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:24:37,348 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_471 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_471) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-18 20:26:25,386 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-18 20:26:25,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 77 [2022-11-18 20:26:25,414 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:26:25,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 490 treesize of output 476 [2022-11-18 20:26:25,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 462 treesize of output 430 [2022-11-18 20:26:25,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 207 [2022-11-18 20:26:25,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 414 treesize of output 406 [2022-11-18 20:26:46,697 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:26:46,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-11-18 20:26:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 39 proven. 82 refuted. 3 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-18 20:26:47,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216342607] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:26:47,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:26:47,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 32] total 86 [2022-11-18 20:26:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838783246] [2022-11-18 20:26:47,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:26:47,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-11-18 20:26:47,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:47,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-11-18 20:26:47,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=6690, Unknown=99, NotChecked=168, Total=7482 [2022-11-18 20:26:47,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 453 [2022-11-18 20:26:47,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 487 transitions, 1620 flow. Second operand has 87 states, 87 states have (on average 265.5632183908046) internal successors, (23104), 87 states have internal predecessors, (23104), 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) [2022-11-18 20:26:47,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:47,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 453 [2022-11-18 20:26:47,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:27:13,890 INFO L130 PetriNetUnfolder]: 9274/45939 cut-off events. [2022-11-18 20:27:13,890 INFO L131 PetriNetUnfolder]: For 6803/7116 co-relation queries the response was YES. [2022-11-18 20:27:14,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63934 conditions, 45939 events. 9274/45939 cut-off events. For 6803/7116 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 670361 event pairs, 1119 based on Foata normal form. 27/37886 useless extension candidates. Maximal degree in co-relation 63468. Up to 3310 conditions per place. [2022-11-18 20:27:14,910 INFO L137 encePairwiseOnDemand]: 410/453 looper letters, 383 selfloop transitions, 108 changer transitions 0/740 dead transitions. [2022-11-18 20:27:14,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 740 transitions, 3485 flow [2022-11-18 20:27:14,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-18 20:27:14,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-11-18 20:27:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 15286 transitions. [2022-11-18 20:27:14,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5919987606986561 [2022-11-18 20:27:14,942 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 15286 transitions. [2022-11-18 20:27:14,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 15286 transitions. [2022-11-18 20:27:14,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:27:14,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 15286 transitions. [2022-11-18 20:27:14,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 268.17543859649123) internal successors, (15286), 57 states have internal predecessors, (15286), 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) [2022-11-18 20:27:15,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 453.0) internal successors, (26274), 58 states have internal predecessors, (26274), 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) [2022-11-18 20:27:15,028 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 453.0) internal successors, (26274), 58 states have internal predecessors, (26274), 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) [2022-11-18 20:27:15,028 INFO L175 Difference]: Start difference. First operand has 482 places, 487 transitions, 1620 flow. Second operand 57 states and 15286 transitions. [2022-11-18 20:27:15,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 740 transitions, 3485 flow [2022-11-18 20:27:15,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 740 transitions, 3485 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:27:15,092 INFO L231 Difference]: Finished difference. Result has 552 places, 527 transitions, 2211 flow [2022-11-18 20:27:15,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=2211, PETRI_PLACES=552, PETRI_TRANSITIONS=527} [2022-11-18 20:27:15,095 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 154 predicate places. [2022-11-18 20:27:15,096 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 527 transitions, 2211 flow [2022-11-18 20:27:15,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 265.5632183908046) internal successors, (23104), 87 states have internal predecessors, (23104), 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) [2022-11-18 20:27:15,099 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:27:15,099 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:15,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:15,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:27:15,306 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:27:15,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash -57283231, now seen corresponding path program 1 times [2022-11-18 20:27:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:15,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482697994] [2022-11-18 20:27:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:15,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 27 proven. 158 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-18 20:27:20,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:20,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482697994] [2022-11-18 20:27:20,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482697994] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:20,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950564499] [2022-11-18 20:27:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:20,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:20,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:20,572 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:27:20,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ce12fd-aedc-4709-ab1b-b087e15dc976/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:27:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:20,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 20:27:20,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:21,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:27:22,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:22,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:27:22,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:22,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:27:22,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:22,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:27:23,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:23,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:27:23,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:23,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:27:23,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:23,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:27:24,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:27:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 48 proven. 47 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 20:27:24,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:27:28,712 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array Int Int)) (v_ArrVal_574 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_574) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_575) |c_ULTIMATE.start_main_#t~ret15#1.base|) |c_ULTIMATE.start_main_#t~ret15#1.offset|) 9223372039002259456)) is different from false [2022-11-18 20:28:27,667 INFO L321 Elim1Store]: treesize reduction 94, result has 28.2 percent of original size [2022-11-18 20:28:27,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 50 [2022-11-18 20:28:27,678 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:28:27,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 120 [2022-11-18 20:28:27,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2022-11-18 20:28:27,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 20:28:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-11-18 20:28:42,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950564499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:42,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:42,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 26, 26] total 78 [2022-11-18 20:28:42,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051950451] [2022-11-18 20:28:42,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:42,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-11-18 20:28:42,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-11-18 20:28:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=5407, Unknown=113, NotChecked=152, Total=6162 [2022-11-18 20:28:42,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 453 [2022-11-18 20:28:43,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 527 transitions, 2211 flow. Second operand has 79 states, 79 states have (on average 315.0632911392405) internal successors, (24890), 79 states have internal predecessors, (24890), 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) [2022-11-18 20:28:43,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:28:43,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 453 [2022-11-18 20:28:43,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand