./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --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_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/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_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/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_77359032-7db0-4083-9a80-7c9fd33dd485/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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- 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 19:33:19,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:33:19,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:33:19,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:33:19,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:33:19,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:33:19,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:33:19,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:33:19,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:33:19,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:33:19,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:33:19,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:33:19,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:33:19,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:33:19,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:33:19,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:33:19,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:33:19,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:33:19,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:33:19,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:33:19,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:33:19,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:33:19,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:33:19,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:33:19,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:33:19,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:33:19,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:33:19,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:33:19,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:33:19,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:33:19,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:33:19,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:33:19,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:33:19,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:33:19,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:33:19,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:33:19,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:33:19,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:33:19,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:33:19,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:33:19,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:33:19,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:33:19,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:33:19,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:33:19,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:33:19,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:33:19,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:33:19,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:33:19,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:33:19,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:33:19,910 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:33:19,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:33:19,912 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:33:19,912 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:33:19,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:33:19,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:33:19,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:33:19,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:33:19,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:33:19,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:33:19,915 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:33:19,915 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:33:19,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:33:19,916 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:33:19,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:33:19,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:33:19,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:33:19,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:33:19,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:19,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:33:19,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:33:19,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:33:19,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:33:19,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:33:19,920 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:33:19,921 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:33:19,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:33:19,921 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_77359032-7db0-4083-9a80-7c9fd33dd485/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2022-11-18 19:33:20,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:33:20,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:33:20,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:33:20,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:33:20,332 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:33:20,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2022-11-18 19:33:20,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/data/33c121862/dec0be534d394894899651a69de8604b/FLAGc26c2bfb1 [2022-11-18 19:33:21,144 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:33:21,145 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2022-11-18 19:33:21,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/data/33c121862/dec0be534d394894899651a69de8604b/FLAGc26c2bfb1 [2022-11-18 19:33:21,398 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/data/33c121862/dec0be534d394894899651a69de8604b [2022-11-18 19:33:21,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:33:21,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:33:21,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:21,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:33:21,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:33:21,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:21" (1/1) ... [2022-11-18 19:33:21,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d75568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:21, skipping insertion in model container [2022-11-18 19:33:21,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:21" (1/1) ... [2022-11-18 19:33:21,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:33:21,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:33:22,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:22,224 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:33:22,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:22,389 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:33:22,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22 WrapperNode [2022-11-18 19:33:22,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:22,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:22,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:33:22,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:33:22,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (1/1) ... [2022-11-18 19:33:22,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (1/1) ... [2022-11-18 19:33:22,482 INFO L138 Inliner]: procedures = 262, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-11-18 19:33:22,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:22,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:33:22,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:33:22,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:33:22,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (1/1) ... [2022-11-18 19:33:22,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (1/1) ... [2022-11-18 19:33:22,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (1/1) ... [2022-11-18 19:33:22,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (1/1) ... [2022-11-18 19:33:22,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (1/1) ... [2022-11-18 19:33:22,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (1/1) ... [2022-11-18 19:33:22,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (1/1) ... [2022-11-18 19:33:22,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (1/1) ... [2022-11-18 19:33:22,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:33:22,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:33:22,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:33:22,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:33:22,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (1/1) ... [2022-11-18 19:33:22,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:22,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:22,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:33:22,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:33:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:33:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:33:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:33:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:33:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:33:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:33:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 19:33:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 19:33:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:33:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:33:22,686 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 19:33:22,918 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:33:22,921 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:33:23,211 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:33:23,220 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:33:23,221 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 19:33:23,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:23 BoogieIcfgContainer [2022-11-18 19:33:23,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:33:23,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:33:23,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:33:23,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:33:23,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:33:21" (1/3) ... [2022-11-18 19:33:23,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6672a23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:23, skipping insertion in model container [2022-11-18 19:33:23,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:22" (2/3) ... [2022-11-18 19:33:23,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6672a23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:23, skipping insertion in model container [2022-11-18 19:33:23,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:23" (3/3) ... [2022-11-18 19:33:23,240 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2022-11-18 19:33:23,257 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:33:23,272 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:33:23,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 19:33:23,273 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:33:23,366 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:33:23,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 98 transitions, 201 flow [2022-11-18 19:33:23,474 INFO L130 PetriNetUnfolder]: 6/97 cut-off events. [2022-11-18 19:33:23,474 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:33:23,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 97 events. 6/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-18 19:33:23,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 98 transitions, 201 flow [2022-11-18 19:33:23,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 97 transitions, 197 flow [2022-11-18 19:33:23,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:33:23,511 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;@2c1e5cca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:33:23,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-18 19:33:23,520 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2022-11-18 19:33:23,521 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:33:23,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:23,522 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:23,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:23,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:23,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1598082456, now seen corresponding path program 1 times [2022-11-18 19:33:23,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:23,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923157415] [2022-11-18 19:33:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:23,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:23,890 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 19:33:23,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:23,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923157415] [2022-11-18 19:33:23,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923157415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:23,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:23,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:23,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508778359] [2022-11-18 19:33:23,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:23,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:23,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:23,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:23,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-18 19:33:23,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 97 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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 19:33:23,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:23,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-18 19:33:23,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:24,094 INFO L130 PetriNetUnfolder]: 3/101 cut-off events. [2022-11-18 19:33:24,094 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:33:24,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 101 events. 3/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 2/90 useless extension candidates. Maximal degree in co-relation 66. Up to 14 conditions per place. [2022-11-18 19:33:24,097 INFO L137 encePairwiseOnDemand]: 88/98 looper letters, 16 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2022-11-18 19:33:24,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 101 transitions, 245 flow [2022-11-18 19:33:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2022-11-18 19:33:24,117 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8918367346938776 [2022-11-18 19:33:24,118 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2022-11-18 19:33:24,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2022-11-18 19:33:24,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:24,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2022-11-18 19:33:24,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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 19:33:24,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:24,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:24,139 INFO L175 Difference]: Start difference. First operand has 95 places, 97 transitions, 197 flow. Second operand 5 states and 437 transitions. [2022-11-18 19:33:24,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 101 transitions, 245 flow [2022-11-18 19:33:24,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 101 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:24,169 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 222 flow [2022-11-18 19:33:24,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2022-11-18 19:33:24,178 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 6 predicate places. [2022-11-18 19:33:24,181 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 222 flow [2022-11-18 19:33:24,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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 19:33:24,182 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:24,183 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:24,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:33:24,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:24,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:24,186 INFO L85 PathProgramCache]: Analyzing trace with hash -532368849, now seen corresponding path program 1 times [2022-11-18 19:33:24,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:24,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131358643] [2022-11-18 19:33:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:33:24,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:24,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131358643] [2022-11-18 19:33:24,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131358643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:24,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:24,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:24,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80660756] [2022-11-18 19:33:24,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:24,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:24,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:24,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:24,347 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-18 19:33:24,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 19:33:24,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:24,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-18 19:33:24,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:24,449 INFO L130 PetriNetUnfolder]: 3/100 cut-off events. [2022-11-18 19:33:24,449 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:33:24,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 100 events. 3/100 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 98. Up to 7 conditions per place. [2022-11-18 19:33:24,455 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 8 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2022-11-18 19:33:24,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 252 flow [2022-11-18 19:33:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2022-11-18 19:33:24,465 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8653061224489796 [2022-11-18 19:33:24,468 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2022-11-18 19:33:24,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2022-11-18 19:33:24,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:24,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2022-11-18 19:33:24,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:24,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:24,478 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:24,478 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 222 flow. Second operand 5 states and 424 transitions. [2022-11-18 19:33:24,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 252 flow [2022-11-18 19:33:24,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 97 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:24,482 INFO L231 Difference]: Finished difference. Result has 104 places, 97 transitions, 240 flow [2022-11-18 19:33:24,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=104, PETRI_TRANSITIONS=97} [2022-11-18 19:33:24,485 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 9 predicate places. [2022-11-18 19:33:24,485 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 97 transitions, 240 flow [2022-11-18 19:33:24,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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 19:33:24,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:24,486 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:24,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:33:24,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:24,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:24,489 INFO L85 PathProgramCache]: Analyzing trace with hash 676435062, now seen corresponding path program 1 times [2022-11-18 19:33:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:24,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408145716] [2022-11-18 19:33:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:24,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:24,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:24,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408145716] [2022-11-18 19:33:24,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408145716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:24,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484001923] [2022-11-18 19:33:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:24,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:24,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:24,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:24,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:33:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:24,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:33:24,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:24,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:24,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484001923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:24,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:24,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:33:24,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034856237] [2022-11-18 19:33:24,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:24,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:24,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:24,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:24,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-18 19:33:24,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:24,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:24,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-18 19:33:24,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:25,058 INFO L130 PetriNetUnfolder]: 3/99 cut-off events. [2022-11-18 19:33:25,059 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-18 19:33:25,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 99 events. 3/99 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 96. Up to 6 conditions per place. [2022-11-18 19:33:25,061 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 12 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2022-11-18 19:33:25,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 99 transitions, 278 flow [2022-11-18 19:33:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:33:25,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:33:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 593 transitions. [2022-11-18 19:33:25,064 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8644314868804664 [2022-11-18 19:33:25,064 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 593 transitions. [2022-11-18 19:33:25,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 593 transitions. [2022-11-18 19:33:25,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:25,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 593 transitions. [2022-11-18 19:33:25,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.71428571428571) internal successors, (593), 7 states have internal predecessors, (593), 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 19:33:25,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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 19:33:25,071 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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 19:33:25,072 INFO L175 Difference]: Start difference. First operand has 104 places, 97 transitions, 240 flow. Second operand 7 states and 593 transitions. [2022-11-18 19:33:25,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 99 transitions, 278 flow [2022-11-18 19:33:25,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 99 transitions, 266 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:33:25,075 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 236 flow [2022-11-18 19:33:25,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2022-11-18 19:33:25,077 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 11 predicate places. [2022-11-18 19:33:25,077 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 236 flow [2022-11-18 19:33:25,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:25,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:25,078 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] [2022-11-18 19:33:25,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:25,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:25,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:25,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:25,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2098150413, now seen corresponding path program 1 times [2022-11-18 19:33:25,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:25,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845620007] [2022-11-18 19:33:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:25,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:25,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:25,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845620007] [2022-11-18 19:33:25,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845620007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:25,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685640586] [2022-11-18 19:33:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:25,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:25,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:25,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:25,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:33:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:25,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:33:25,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:25,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:25,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685640586] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:25,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:25,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 19:33:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668802484] [2022-11-18 19:33:25,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:25,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:33:25,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:25,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:33:25,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:33:25,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-18 19:33:25,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 236 flow. Second operand has 10 states, 10 states have (on average 84.7) internal successors, (847), 10 states have internal predecessors, (847), 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 19:33:25,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:25,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-18 19:33:25,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:25,848 INFO L130 PetriNetUnfolder]: 3/107 cut-off events. [2022-11-18 19:33:25,853 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 19:33:25,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 107 events. 3/107 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 121 event pairs, 0 based on Foata normal form. 2/99 useless extension candidates. Maximal degree in co-relation 86. Up to 7 conditions per place. [2022-11-18 19:33:25,856 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 17 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2022-11-18 19:33:25,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 107 transitions, 326 flow [2022-11-18 19:33:25,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:33:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:33:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 766 transitions. [2022-11-18 19:33:25,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8684807256235828 [2022-11-18 19:33:25,861 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 766 transitions. [2022-11-18 19:33:25,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 766 transitions. [2022-11-18 19:33:25,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:25,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 766 transitions. [2022-11-18 19:33:25,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.11111111111111) internal successors, (766), 9 states have internal predecessors, (766), 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 19:33:25,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 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 19:33:25,867 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 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 19:33:25,867 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 236 flow. Second operand 9 states and 766 transitions. [2022-11-18 19:33:25,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 107 transitions, 326 flow [2022-11-18 19:33:25,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 313 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:25,872 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 283 flow [2022-11-18 19:33:25,872 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=283, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2022-11-18 19:33:25,874 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 18 predicate places. [2022-11-18 19:33:25,874 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 283 flow [2022-11-18 19:33:25,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.7) internal successors, (847), 10 states have internal predecessors, (847), 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 19:33:25,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:25,876 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 19:33:25,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:33:26,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:26,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash 234053075, now seen corresponding path program 2 times [2022-11-18 19:33:26,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:26,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924525393] [2022-11-18 19:33:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:26,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:26,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:26,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924525393] [2022-11-18 19:33:26,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924525393] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:26,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765761514] [2022-11-18 19:33:26,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:33:26,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:26,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:26,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:26,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:33:26,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:33:26,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:26,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:33:26,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:26,449 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 7 treesize of output 6 [2022-11-18 19:33:26,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:26,732 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 13 treesize of output 15 [2022-11-18 19:33:26,832 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 14 treesize of output 10 [2022-11-18 19:33:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 19:33:26,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:26,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765761514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:26,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:26,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2022-11-18 19:33:26,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907778998] [2022-11-18 19:33:26,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:26,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:33:26,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:26,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:33:26,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:33:26,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:33:26,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 283 flow. Second operand has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 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 19:33:26,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:26,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:33:26,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:27,372 INFO L130 PetriNetUnfolder]: 170/685 cut-off events. [2022-11-18 19:33:27,373 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 19:33:27,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 685 events. 170/685 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4032 event pairs, 0 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 989. Up to 198 conditions per place. [2022-11-18 19:33:27,379 INFO L137 encePairwiseOnDemand]: 83/98 looper letters, 51 selfloop transitions, 27 changer transitions 0/151 dead transitions. [2022-11-18 19:33:27,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 151 transitions, 541 flow [2022-11-18 19:33:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:33:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:33:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 963 transitions. [2022-11-18 19:33:27,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7558869701726845 [2022-11-18 19:33:27,382 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 963 transitions. [2022-11-18 19:33:27,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 963 transitions. [2022-11-18 19:33:27,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:27,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 963 transitions. [2022-11-18 19:33:27,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.07692307692308) internal successors, (963), 13 states have internal predecessors, (963), 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 19:33:27,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 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 19:33:27,389 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 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 19:33:27,389 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 283 flow. Second operand 13 states and 963 transitions. [2022-11-18 19:33:27,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 151 transitions, 541 flow [2022-11-18 19:33:27,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 151 transitions, 527 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-18 19:33:27,394 INFO L231 Difference]: Finished difference. Result has 129 places, 127 transitions, 450 flow [2022-11-18 19:33:27,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=450, PETRI_PLACES=129, PETRI_TRANSITIONS=127} [2022-11-18 19:33:27,395 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 34 predicate places. [2022-11-18 19:33:27,395 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 127 transitions, 450 flow [2022-11-18 19:33:27,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 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 19:33:27,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:27,396 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 19:33:27,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:27,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:27,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:27,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:27,603 INFO L85 PathProgramCache]: Analyzing trace with hash 769616982, now seen corresponding path program 1 times [2022-11-18 19:33:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:27,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394732094] [2022-11-18 19:33:27,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:27,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:27,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:27,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394732094] [2022-11-18 19:33:27,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394732094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:27,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110704404] [2022-11-18 19:33:27,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:27,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:27,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:27,841 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:27,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:33:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:27,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:33:27,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:28,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:28,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110704404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:28,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:28,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 19:33:28,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048147328] [2022-11-18 19:33:28,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:28,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:33:28,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:28,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:33:28,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:33:28,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-18 19:33:28,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 127 transitions, 450 flow. Second operand has 18 states, 18 states have (on average 85.05555555555556) internal successors, (1531), 18 states have internal predecessors, (1531), 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 19:33:28,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:28,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-18 19:33:28,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:28,494 INFO L130 PetriNetUnfolder]: 38/486 cut-off events. [2022-11-18 19:33:28,495 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-18 19:33:28,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 486 events. 38/486 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2390 event pairs, 3 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 696. Up to 33 conditions per place. [2022-11-18 19:33:28,499 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 33 selfloop transitions, 21 changer transitions 0/162 dead transitions. [2022-11-18 19:33:28,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 162 transitions, 720 flow [2022-11-18 19:33:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:33:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 19:33:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1780 transitions. [2022-11-18 19:33:28,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8649173955296404 [2022-11-18 19:33:28,504 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1780 transitions. [2022-11-18 19:33:28,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1780 transitions. [2022-11-18 19:33:28,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:28,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1780 transitions. [2022-11-18 19:33:28,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 84.76190476190476) internal successors, (1780), 21 states have internal predecessors, (1780), 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 19:33:28,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 98.0) internal successors, (2156), 22 states have internal predecessors, (2156), 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 19:33:28,517 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 98.0) internal successors, (2156), 22 states have internal predecessors, (2156), 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 19:33:28,518 INFO L175 Difference]: Start difference. First operand has 129 places, 127 transitions, 450 flow. Second operand 21 states and 1780 transitions. [2022-11-18 19:33:28,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 162 transitions, 720 flow [2022-11-18 19:33:28,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 162 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:28,527 INFO L231 Difference]: Finished difference. Result has 153 places, 140 transitions, 612 flow [2022-11-18 19:33:28,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=612, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2022-11-18 19:33:28,530 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 58 predicate places. [2022-11-18 19:33:28,531 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 612 flow [2022-11-18 19:33:28,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 85.05555555555556) internal successors, (1531), 18 states have internal predecessors, (1531), 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 19:33:28,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:28,532 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:28,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:28,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:28,738 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:28,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:28,739 INFO L85 PathProgramCache]: Analyzing trace with hash -916830186, now seen corresponding path program 2 times [2022-11-18 19:33:28,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:28,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338318436] [2022-11-18 19:33:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:28,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:29,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:29,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338318436] [2022-11-18 19:33:29,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338318436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:29,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833285944] [2022-11-18 19:33:29,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:33:29,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:29,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:29,170 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:29,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:33:29,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:33:29,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:29,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:33:29,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:29,342 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 7 treesize of output 6 [2022-11-18 19:33:29,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:29,833 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 13 treesize of output 15 [2022-11-18 19:33:29,972 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 14 treesize of output 10 [2022-11-18 19:33:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-18 19:33:30,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:30,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833285944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:30,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:30,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 26 [2022-11-18 19:33:30,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656161435] [2022-11-18 19:33:30,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:30,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:33:30,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:30,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:33:30,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:33:30,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:33:30,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 140 transitions, 612 flow. Second operand has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 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 19:33:30,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:30,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:33:30,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:30,589 INFO L130 PetriNetUnfolder]: 183/932 cut-off events. [2022-11-18 19:33:30,590 INFO L131 PetriNetUnfolder]: For 531/543 co-relation queries the response was YES. [2022-11-18 19:33:30,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 932 events. 183/932 cut-off events. For 531/543 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6053 event pairs, 34 based on Foata normal form. 10/811 useless extension candidates. Maximal degree in co-relation 1710. Up to 271 conditions per place. [2022-11-18 19:33:30,598 INFO L137 encePairwiseOnDemand]: 84/98 looper letters, 60 selfloop transitions, 26 changer transitions 0/180 dead transitions. [2022-11-18 19:33:30,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 180 transitions, 938 flow [2022-11-18 19:33:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:33:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:33:30,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 747 transitions. [2022-11-18 19:33:30,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7622448979591837 [2022-11-18 19:33:30,602 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 747 transitions. [2022-11-18 19:33:30,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 747 transitions. [2022-11-18 19:33:30,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:30,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 747 transitions. [2022-11-18 19:33:30,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.7) internal successors, (747), 10 states have internal predecessors, (747), 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 19:33:30,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 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 19:33:30,608 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 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 19:33:30,609 INFO L175 Difference]: Start difference. First operand has 153 places, 140 transitions, 612 flow. Second operand 10 states and 747 transitions. [2022-11-18 19:33:30,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 180 transitions, 938 flow [2022-11-18 19:33:30,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 180 transitions, 894 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-11-18 19:33:30,618 INFO L231 Difference]: Finished difference. Result has 160 places, 158 transitions, 727 flow [2022-11-18 19:33:30,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=727, PETRI_PLACES=160, PETRI_TRANSITIONS=158} [2022-11-18 19:33:30,619 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 65 predicate places. [2022-11-18 19:33:30,619 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 158 transitions, 727 flow [2022-11-18 19:33:30,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 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 19:33:30,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:30,620 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:30,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:30,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:30,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:30,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2074543649, now seen corresponding path program 1 times [2022-11-18 19:33:30,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:30,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470059713] [2022-11-18 19:33:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:30,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:31,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:31,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470059713] [2022-11-18 19:33:31,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470059713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:31,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11328158] [2022-11-18 19:33:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:31,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:31,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:31,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:31,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:33:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:31,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:33:31,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:31,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:31,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11328158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:31,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:31,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 19:33:31,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991813173] [2022-11-18 19:33:31,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:31,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:33:31,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:31,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:33:31,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:33:31,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-18 19:33:31,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 158 transitions, 727 flow. Second operand has 23 states, 23 states have (on average 85.30434782608695) internal successors, (1962), 23 states have internal predecessors, (1962), 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 19:33:31,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:31,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-18 19:33:31,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:32,557 INFO L130 PetriNetUnfolder]: 65/701 cut-off events. [2022-11-18 19:33:32,558 INFO L131 PetriNetUnfolder]: For 305/306 co-relation queries the response was YES. [2022-11-18 19:33:32,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 701 events. 65/701 cut-off events. For 305/306 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3999 event pairs, 4 based on Foata normal form. 4/611 useless extension candidates. Maximal degree in co-relation 1145. Up to 43 conditions per place. [2022-11-18 19:33:32,566 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 45 selfloop transitions, 30 changer transitions 0/201 dead transitions. [2022-11-18 19:33:32,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 201 transitions, 1075 flow [2022-11-18 19:33:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:33:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 19:33:32,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2538 transitions. [2022-11-18 19:33:32,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.863265306122449 [2022-11-18 19:33:32,577 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2538 transitions. [2022-11-18 19:33:32,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2538 transitions. [2022-11-18 19:33:32,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:32,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2538 transitions. [2022-11-18 19:33:32,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 84.6) internal successors, (2538), 30 states have internal predecessors, (2538), 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 19:33:32,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 98.0) internal successors, (3038), 31 states have internal predecessors, (3038), 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 19:33:32,599 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 98.0) internal successors, (3038), 31 states have internal predecessors, (3038), 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 19:33:32,599 INFO L175 Difference]: Start difference. First operand has 160 places, 158 transitions, 727 flow. Second operand 30 states and 2538 transitions. [2022-11-18 19:33:32,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 201 transitions, 1075 flow [2022-11-18 19:33:32,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 201 transitions, 1073 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:32,610 INFO L231 Difference]: Finished difference. Result has 192 places, 168 transitions, 891 flow [2022-11-18 19:33:32,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=891, PETRI_PLACES=192, PETRI_TRANSITIONS=168} [2022-11-18 19:33:32,615 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 97 predicate places. [2022-11-18 19:33:32,615 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 168 transitions, 891 flow [2022-11-18 19:33:32,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 85.30434782608695) internal successors, (1962), 23 states have internal predecessors, (1962), 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 19:33:32,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:32,617 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:32,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:32,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77359032-7db0-4083-9a80-7c9fd33dd485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:32,824 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:32,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:32,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1668173254, now seen corresponding path program 2 times [2022-11-18 19:33:32,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:32,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743849128] [2022-11-18 19:33:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:32,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:33:33,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:33,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743849128] [2022-11-18 19:33:33,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743849128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:33,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:33,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:33:33,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613886958] [2022-11-18 19:33:33,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:33,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:33:33,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:33,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:33:33,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:33:33,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:33:33,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 168 transitions, 891 flow. Second operand has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 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 19:33:33,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:33,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:33:33,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:34,203 INFO L130 PetriNetUnfolder]: 283/1258 cut-off events. [2022-11-18 19:33:34,203 INFO L131 PetriNetUnfolder]: For 1057/1081 co-relation queries the response was YES. [2022-11-18 19:33:34,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 1258 events. 283/1258 cut-off events. For 1057/1081 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8499 event pairs, 38 based on Foata normal form. 14/1118 useless extension candidates. Maximal degree in co-relation 2673. Up to 412 conditions per place. [2022-11-18 19:33:34,215 INFO L137 encePairwiseOnDemand]: 83/98 looper letters, 75 selfloop transitions, 40 changer transitions 0/216 dead transitions. [2022-11-18 19:33:34,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 216 transitions, 1347 flow [2022-11-18 19:33:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:33:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 19:33:34,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1253 transitions. [2022-11-18 19:33:34,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7521008403361344 [2022-11-18 19:33:34,220 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1253 transitions. [2022-11-18 19:33:34,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1253 transitions. [2022-11-18 19:33:34,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:34,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1253 transitions. [2022-11-18 19:33:34,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.70588235294117) internal successors, (1253), 17 states have internal predecessors, (1253), 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 19:33:34,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 98.0) internal successors, (1764), 18 states have internal predecessors, (1764), 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 19:33:34,231 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 98.0) internal successors, (1764), 18 states have internal predecessors, (1764), 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 19:33:34,231 INFO L175 Difference]: Start difference. First operand has 192 places, 168 transitions, 891 flow. Second operand 17 states and 1253 transitions. [2022-11-18 19:33:34,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 216 transitions, 1347 flow [2022-11-18 19:33:34,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 216 transitions, 1301 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-18 19:33:34,244 INFO L231 Difference]: Finished difference. Result has 195 places, 177 transitions, 1022 flow [2022-11-18 19:33:34,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1022, PETRI_PLACES=195, PETRI_TRANSITIONS=177} [2022-11-18 19:33:34,246 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 100 predicate places. [2022-11-18 19:33:34,247 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 177 transitions, 1022 flow [2022-11-18 19:33:34,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 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 19:33:34,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:34,248 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:34,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:33:34,249 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:34,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1090785083, now seen corresponding path program 1 times [2022-11-18 19:33:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:34,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323176185] [2022-11-18 19:33:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:33:34,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:34,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323176185] [2022-11-18 19:33:34,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323176185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:34,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:34,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:33:34,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921110438] [2022-11-18 19:33:34,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:34,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:33:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:34,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:33:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:33:34,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-18 19:33:34,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 177 transitions, 1022 flow. Second operand has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 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 19:33:34,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:34,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-18 19:33:34,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:35,495 INFO L130 PetriNetUnfolder]: 266/1314 cut-off events. [2022-11-18 19:33:35,495 INFO L131 PetriNetUnfolder]: For 1575/1640 co-relation queries the response was YES. [2022-11-18 19:33:35,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3272 conditions, 1314 events. 266/1314 cut-off events. For 1575/1640 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9115 event pairs, 37 based on Foata normal form. 20/1196 useless extension candidates. Maximal degree in co-relation 3037. Up to 401 conditions per place. [2022-11-18 19:33:35,510 INFO L137 encePairwiseOnDemand]: 83/98 looper letters, 63 selfloop transitions, 36 changer transitions 0/206 dead transitions. [2022-11-18 19:33:35,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 206 transitions, 1390 flow [2022-11-18 19:33:35,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:33:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:33:35,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 959 transitions. [2022-11-18 19:33:35,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7527472527472527 [2022-11-18 19:33:35,513 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 959 transitions. [2022-11-18 19:33:35,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 959 transitions. [2022-11-18 19:33:35,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:35,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 959 transitions. [2022-11-18 19:33:35,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.76923076923077) internal successors, (959), 13 states have internal predecessors, (959), 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 19:33:35,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 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 19:33:35,520 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 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 19:33:35,521 INFO L175 Difference]: Start difference. First operand has 195 places, 177 transitions, 1022 flow. Second operand 13 states and 959 transitions. [2022-11-18 19:33:35,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 206 transitions, 1390 flow [2022-11-18 19:33:35,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 206 transitions, 1348 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 19:33:35,540 INFO L231 Difference]: Finished difference. Result has 203 places, 181 transitions, 1116 flow [2022-11-18 19:33:35,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1116, PETRI_PLACES=203, PETRI_TRANSITIONS=181} [2022-11-18 19:33:35,541 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 108 predicate places. [2022-11-18 19:33:35,542 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 181 transitions, 1116 flow [2022-11-18 19:33:35,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 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 19:33:35,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:35,543 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:35,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:33:35,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:35,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:35,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1367802321, now seen corresponding path program 1 times [2022-11-18 19:33:35,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:35,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553045830] [2022-11-18 19:33:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:35,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:33:35,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:35,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553045830] [2022-11-18 19:33:35,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553045830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:35,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:35,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313052505] [2022-11-18 19:33:35,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:35,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:35,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:35,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:35,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:35,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-18 19:33:35,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 181 transitions, 1116 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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 19:33:35,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:35,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-18 19:33:35,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:35,999 INFO L130 PetriNetUnfolder]: 109/1140 cut-off events. [2022-11-18 19:33:35,999 INFO L131 PetriNetUnfolder]: For 960/984 co-relation queries the response was YES. [2022-11-18 19:33:36,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 1140 events. 109/1140 cut-off events. For 960/984 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7237 event pairs, 17 based on Foata normal form. 9/1062 useless extension candidates. Maximal degree in co-relation 2236. Up to 119 conditions per place. [2022-11-18 19:33:36,013 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 19 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2022-11-18 19:33:36,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 188 transitions, 1180 flow [2022-11-18 19:33:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2022-11-18 19:33:36,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8836734693877552 [2022-11-18 19:33:36,016 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2022-11-18 19:33:36,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2022-11-18 19:33:36,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:36,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2022-11-18 19:33:36,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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 19:33:36,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:36,020 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:36,020 INFO L175 Difference]: Start difference. First operand has 203 places, 181 transitions, 1116 flow. Second operand 5 states and 433 transitions. [2022-11-18 19:33:36,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 188 transitions, 1180 flow [2022-11-18 19:33:36,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 188 transitions, 1145 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:33:36,039 INFO L231 Difference]: Finished difference. Result has 204 places, 184 transitions, 1113 flow [2022-11-18 19:33:36,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1113, PETRI_PLACES=204, PETRI_TRANSITIONS=184} [2022-11-18 19:33:36,041 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 109 predicate places. [2022-11-18 19:33:36,041 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 184 transitions, 1113 flow [2022-11-18 19:33:36,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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 19:33:36,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:36,042 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:36,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:33:36,042 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:36,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:36,043 INFO L85 PathProgramCache]: Analyzing trace with hash 175245975, now seen corresponding path program 1 times [2022-11-18 19:33:36,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:36,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182264575] [2022-11-18 19:33:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:36,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:33:36,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:36,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182264575] [2022-11-18 19:33:36,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182264575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:36,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:36,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:36,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768894080] [2022-11-18 19:33:36,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:36,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:36,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:36,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:36,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:36,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 98 [2022-11-18 19:33:36,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 184 transitions, 1113 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 19:33:36,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:36,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 98 [2022-11-18 19:33:36,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:36,515 INFO L130 PetriNetUnfolder]: 105/1163 cut-off events. [2022-11-18 19:33:36,516 INFO L131 PetriNetUnfolder]: For 909/926 co-relation queries the response was YES. [2022-11-18 19:33:36,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 1163 events. 105/1163 cut-off events. For 909/926 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7352 event pairs, 21 based on Foata normal form. 6/1116 useless extension candidates. Maximal degree in co-relation 2323. Up to 145 conditions per place. [2022-11-18 19:33:36,531 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 19 selfloop transitions, 4 changer transitions 0/177 dead transitions. [2022-11-18 19:33:36,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 177 transitions, 1063 flow [2022-11-18 19:33:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 429 transitions. [2022-11-18 19:33:36,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755102040816326 [2022-11-18 19:33:36,533 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 429 transitions. [2022-11-18 19:33:36,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 429 transitions. [2022-11-18 19:33:36,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:36,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 429 transitions. [2022-11-18 19:33:36,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:36,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:36,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:36,537 INFO L175 Difference]: Start difference. First operand has 204 places, 184 transitions, 1113 flow. Second operand 5 states and 429 transitions. [2022-11-18 19:33:36,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 177 transitions, 1063 flow [2022-11-18 19:33:36,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 177 transitions, 1041 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-11-18 19:33:36,555 INFO L231 Difference]: Finished difference. Result has 199 places, 173 transitions, 1009 flow [2022-11-18 19:33:36,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1009, PETRI_PLACES=199, PETRI_TRANSITIONS=173} [2022-11-18 19:33:36,556 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 104 predicate places. [2022-11-18 19:33:36,557 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 173 transitions, 1009 flow [2022-11-18 19:33:36,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 19:33:36,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:36,558 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:36,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:33:36,558 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:36,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1831747693, now seen corresponding path program 1 times [2022-11-18 19:33:36,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:36,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93241807] [2022-11-18 19:33:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:33:37,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:37,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93241807] [2022-11-18 19:33:37,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93241807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:37,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:37,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:33:37,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122091363] [2022-11-18 19:33:37,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:37,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:33:37,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:37,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:33:37,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:37,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:33:37,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 173 transitions, 1009 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:33:37,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:37,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:33:37,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:40,325 INFO L130 PetriNetUnfolder]: 1585/4638 cut-off events. [2022-11-18 19:33:40,325 INFO L131 PetriNetUnfolder]: For 4212/4212 co-relation queries the response was YES. [2022-11-18 19:33:40,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12516 conditions, 4638 events. 1585/4638 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 34872 event pairs, 602 based on Foata normal form. 28/4623 useless extension candidates. Maximal degree in co-relation 12235. Up to 2036 conditions per place. [2022-11-18 19:33:40,383 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 216 selfloop transitions, 58 changer transitions 0/365 dead transitions. [2022-11-18 19:33:40,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 365 transitions, 2476 flow [2022-11-18 19:33:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:33:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 19:33:40,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1531 transitions. [2022-11-18 19:33:40,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6792369121561668 [2022-11-18 19:33:40,389 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1531 transitions. [2022-11-18 19:33:40,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1531 transitions. [2022-11-18 19:33:40,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:40,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1531 transitions. [2022-11-18 19:33:40,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 66.56521739130434) internal successors, (1531), 23 states have internal predecessors, (1531), 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 19:33:40,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 98.0) internal successors, (2352), 24 states have internal predecessors, (2352), 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 19:33:40,402 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 98.0) internal successors, (2352), 24 states have internal predecessors, (2352), 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 19:33:40,403 INFO L175 Difference]: Start difference. First operand has 199 places, 173 transitions, 1009 flow. Second operand 23 states and 1531 transitions. [2022-11-18 19:33:40,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 365 transitions, 2476 flow [2022-11-18 19:33:40,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 365 transitions, 2474 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:40,449 INFO L231 Difference]: Finished difference. Result has 233 places, 206 transitions, 1491 flow [2022-11-18 19:33:40,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1491, PETRI_PLACES=233, PETRI_TRANSITIONS=206} [2022-11-18 19:33:40,450 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 138 predicate places. [2022-11-18 19:33:40,450 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 206 transitions, 1491 flow [2022-11-18 19:33:40,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:33:40,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:40,452 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:40,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:33:40,452 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:40,453 INFO L85 PathProgramCache]: Analyzing trace with hash 849732213, now seen corresponding path program 2 times [2022-11-18 19:33:40,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:40,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931327953] [2022-11-18 19:33:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:40,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:33:41,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:41,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931327953] [2022-11-18 19:33:41,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931327953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:41,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:41,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:33:41,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122938721] [2022-11-18 19:33:41,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:41,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:33:41,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:33:41,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:41,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:33:41,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 206 transitions, 1491 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:33:41,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:41,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:33:41,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:45,261 INFO L130 PetriNetUnfolder]: 1915/5681 cut-off events. [2022-11-18 19:33:45,262 INFO L131 PetriNetUnfolder]: For 11160/11160 co-relation queries the response was YES. [2022-11-18 19:33:45,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17198 conditions, 5681 events. 1915/5681 cut-off events. For 11160/11160 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 44550 event pairs, 525 based on Foata normal form. 28/5678 useless extension candidates. Maximal degree in co-relation 16900. Up to 2078 conditions per place. [2022-11-18 19:33:45,344 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 254 selfloop transitions, 102 changer transitions 0/447 dead transitions. [2022-11-18 19:33:45,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 447 transitions, 3690 flow [2022-11-18 19:33:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:33:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 19:33:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2015 transitions. [2022-11-18 19:33:45,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2022-11-18 19:33:45,350 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2015 transitions. [2022-11-18 19:33:45,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2015 transitions. [2022-11-18 19:33:45,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:45,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2015 transitions. [2022-11-18 19:33:45,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 65.0) internal successors, (2015), 31 states have internal predecessors, (2015), 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 19:33:45,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 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 19:33:45,374 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 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 19:33:45,374 INFO L175 Difference]: Start difference. First operand has 233 places, 206 transitions, 1491 flow. Second operand 31 states and 2015 transitions. [2022-11-18 19:33:45,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 447 transitions, 3690 flow [2022-11-18 19:33:45,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 447 transitions, 3528 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-11-18 19:33:45,466 INFO L231 Difference]: Finished difference. Result has 274 places, 262 transitions, 2389 flow [2022-11-18 19:33:45,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2389, PETRI_PLACES=274, PETRI_TRANSITIONS=262} [2022-11-18 19:33:45,468 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 179 predicate places. [2022-11-18 19:33:45,468 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 262 transitions, 2389 flow [2022-11-18 19:33:45,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:33:45,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:45,470 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:45,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:33:45,470 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:45,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1227308000, now seen corresponding path program 1 times [2022-11-18 19:33:45,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:45,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788176215] [2022-11-18 19:33:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:45,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:33:46,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:46,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788176215] [2022-11-18 19:33:46,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788176215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:46,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:46,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:33:46,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117130744] [2022-11-18 19:33:46,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:46,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:33:46,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:46,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:33:46,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:46,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:33:46,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 262 transitions, 2389 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:33:46,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:46,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:33:46,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:51,002 INFO L130 PetriNetUnfolder]: 2273/6576 cut-off events. [2022-11-18 19:33:51,003 INFO L131 PetriNetUnfolder]: For 22140/22140 co-relation queries the response was YES. [2022-11-18 19:33:51,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22219 conditions, 6576 events. 2273/6576 cut-off events. For 22140/22140 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 53986 event pairs, 395 based on Foata normal form. 32/6568 useless extension candidates. Maximal degree in co-relation 21900. Up to 2765 conditions per place. [2022-11-18 19:33:51,105 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 324 selfloop transitions, 127 changer transitions 0/542 dead transitions. [2022-11-18 19:33:51,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 542 transitions, 5450 flow [2022-11-18 19:33:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:33:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 19:33:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2027 transitions. [2022-11-18 19:33:51,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6672152732060567 [2022-11-18 19:33:51,116 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2027 transitions. [2022-11-18 19:33:51,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2027 transitions. [2022-11-18 19:33:51,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:51,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2027 transitions. [2022-11-18 19:33:51,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 65.38709677419355) internal successors, (2027), 31 states have internal predecessors, (2027), 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 19:33:51,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 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 19:33:51,139 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 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 19:33:51,139 INFO L175 Difference]: Start difference. First operand has 274 places, 262 transitions, 2389 flow. Second operand 31 states and 2027 transitions. [2022-11-18 19:33:51,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 542 transitions, 5450 flow [2022-11-18 19:33:51,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 542 transitions, 5189 flow, removed 57 selfloop flow, removed 8 redundant places. [2022-11-18 19:33:51,319 INFO L231 Difference]: Finished difference. Result has 315 places, 318 transitions, 3337 flow [2022-11-18 19:33:51,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3337, PETRI_PLACES=315, PETRI_TRANSITIONS=318} [2022-11-18 19:33:51,320 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 220 predicate places. [2022-11-18 19:33:51,320 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 318 transitions, 3337 flow [2022-11-18 19:33:51,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:33:51,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:51,321 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:51,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:33:51,322 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash -438500185, now seen corresponding path program 3 times [2022-11-18 19:33:51,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:51,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873117244] [2022-11-18 19:33:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:51,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:33:52,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:52,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873117244] [2022-11-18 19:33:52,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873117244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:52,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:52,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:33:52,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652851051] [2022-11-18 19:33:52,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:52,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:33:52,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:52,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:33:52,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:52,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:33:52,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 318 transitions, 3337 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:33:52,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:52,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:33:52,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:57,731 INFO L130 PetriNetUnfolder]: 2694/7780 cut-off events. [2022-11-18 19:33:57,732 INFO L131 PetriNetUnfolder]: For 37413/37413 co-relation queries the response was YES. [2022-11-18 19:33:57,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28974 conditions, 7780 events. 2694/7780 cut-off events. For 37413/37413 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 64906 event pairs, 629 based on Foata normal form. 28/7776 useless extension candidates. Maximal degree in co-relation 28634. Up to 2981 conditions per place. [2022-11-18 19:33:57,906 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 374 selfloop transitions, 168 changer transitions 0/633 dead transitions. [2022-11-18 19:33:57,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 633 transitions, 7113 flow [2022-11-18 19:33:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 19:33:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 19:33:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2301 transitions. [2022-11-18 19:33:57,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6708454810495627 [2022-11-18 19:33:57,924 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2301 transitions. [2022-11-18 19:33:57,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2301 transitions. [2022-11-18 19:33:57,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:57,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2301 transitions. [2022-11-18 19:33:57,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 65.74285714285715) internal successors, (2301), 35 states have internal predecessors, (2301), 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 19:33:57,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 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 19:33:57,954 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 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 19:33:57,955 INFO L175 Difference]: Start difference. First operand has 315 places, 318 transitions, 3337 flow. Second operand 35 states and 2301 transitions. [2022-11-18 19:33:57,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 633 transitions, 7113 flow [2022-11-18 19:33:58,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 633 transitions, 6787 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-11-18 19:33:58,308 INFO L231 Difference]: Finished difference. Result has 360 places, 384 transitions, 4743 flow [2022-11-18 19:33:58,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4743, PETRI_PLACES=360, PETRI_TRANSITIONS=384} [2022-11-18 19:33:58,309 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 265 predicate places. [2022-11-18 19:33:58,310 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 384 transitions, 4743 flow [2022-11-18 19:33:58,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:33:58,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:58,311 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:58,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:33:58,312 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:33:58,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:58,313 INFO L85 PathProgramCache]: Analyzing trace with hash 773389416, now seen corresponding path program 2 times [2022-11-18 19:33:58,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:58,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695819502] [2022-11-18 19:33:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:58,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:33:59,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:59,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695819502] [2022-11-18 19:33:59,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695819502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:59,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:59,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:33:59,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247107388] [2022-11-18 19:33:59,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:59,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:33:59,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:59,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:33:59,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:59,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:33:59,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 384 transitions, 4743 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:33:59,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:59,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:33:59,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:05,412 INFO L130 PetriNetUnfolder]: 3041/8644 cut-off events. [2022-11-18 19:34:05,413 INFO L131 PetriNetUnfolder]: For 58706/58706 co-relation queries the response was YES. [2022-11-18 19:34:05,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34715 conditions, 8644 events. 3041/8644 cut-off events. For 58706/58706 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 74664 event pairs, 507 based on Foata normal form. 32/8634 useless extension candidates. Maximal degree in co-relation 34355. Up to 3639 conditions per place. [2022-11-18 19:34:05,606 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 445 selfloop transitions, 186 changer transitions 0/722 dead transitions. [2022-11-18 19:34:05,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 722 transitions, 9182 flow [2022-11-18 19:34:05,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 19:34:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 19:34:05,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2313 transitions. [2022-11-18 19:34:05,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6743440233236152 [2022-11-18 19:34:05,618 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2313 transitions. [2022-11-18 19:34:05,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2313 transitions. [2022-11-18 19:34:05,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:05,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2313 transitions. [2022-11-18 19:34:05,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 66.08571428571429) internal successors, (2313), 35 states have internal predecessors, (2313), 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 19:34:05,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 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 19:34:05,642 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 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 19:34:05,643 INFO L175 Difference]: Start difference. First operand has 360 places, 384 transitions, 4743 flow. Second operand 35 states and 2313 transitions. [2022-11-18 19:34:05,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 722 transitions, 9182 flow [2022-11-18 19:34:06,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 722 transitions, 8533 flow, removed 202 selfloop flow, removed 11 redundant places. [2022-11-18 19:34:06,495 INFO L231 Difference]: Finished difference. Result has 399 places, 439 transitions, 5757 flow [2022-11-18 19:34:06,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=4306, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5757, PETRI_PLACES=399, PETRI_TRANSITIONS=439} [2022-11-18 19:34:06,497 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 304 predicate places. [2022-11-18 19:34:06,497 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 439 transitions, 5757 flow [2022-11-18 19:34:06,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:34:06,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:06,498 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:06,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:34:06,499 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:34:06,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:06,500 INFO L85 PathProgramCache]: Analyzing trace with hash 384261101, now seen corresponding path program 4 times [2022-11-18 19:34:06,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:06,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902661878] [2022-11-18 19:34:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:06,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:34:07,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:07,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902661878] [2022-11-18 19:34:07,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902661878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:07,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:07,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:34:07,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250508978] [2022-11-18 19:34:07,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:07,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:34:07,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:07,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:34:07,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:34:07,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:34:07,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 439 transitions, 5757 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:34:07,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:07,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:34:07,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:15,212 INFO L130 PetriNetUnfolder]: 3491/9872 cut-off events. [2022-11-18 19:34:15,212 INFO L131 PetriNetUnfolder]: For 84085/84085 co-relation queries the response was YES. [2022-11-18 19:34:15,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42400 conditions, 9872 events. 3491/9872 cut-off events. For 84085/84085 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 87171 event pairs, 816 based on Foata normal form. 28/9862 useless extension candidates. Maximal degree in co-relation 42022. Up to 4520 conditions per place. [2022-11-18 19:34:15,464 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 422 selfloop transitions, 173 changer transitions 0/686 dead transitions. [2022-11-18 19:34:15,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 686 transitions, 9166 flow [2022-11-18 19:34:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 19:34:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 19:34:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1902 transitions. [2022-11-18 19:34:15,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.669247009148487 [2022-11-18 19:34:15,473 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1902 transitions. [2022-11-18 19:34:15,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1902 transitions. [2022-11-18 19:34:15,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:15,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1902 transitions. [2022-11-18 19:34:15,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 65.58620689655173) internal successors, (1902), 29 states have internal predecessors, (1902), 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 19:34:15,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 98.0) internal successors, (2940), 30 states have internal predecessors, (2940), 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 19:34:15,491 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 98.0) internal successors, (2940), 30 states have internal predecessors, (2940), 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 19:34:15,491 INFO L175 Difference]: Start difference. First operand has 399 places, 439 transitions, 5757 flow. Second operand 29 states and 1902 transitions. [2022-11-18 19:34:15,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 686 transitions, 9166 flow [2022-11-18 19:34:16,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 686 transitions, 8550 flow, removed 190 selfloop flow, removed 14 redundant places. [2022-11-18 19:34:16,503 INFO L231 Difference]: Finished difference. Result has 422 places, 478 transitions, 6444 flow [2022-11-18 19:34:16,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=5279, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6444, PETRI_PLACES=422, PETRI_TRANSITIONS=478} [2022-11-18 19:34:16,505 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 327 predicate places. [2022-11-18 19:34:16,505 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 478 transitions, 6444 flow [2022-11-18 19:34:16,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:34:16,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:16,507 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:16,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:34:16,508 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:34:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:16,509 INFO L85 PathProgramCache]: Analyzing trace with hash 251493165, now seen corresponding path program 5 times [2022-11-18 19:34:16,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:16,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855748058] [2022-11-18 19:34:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:16,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:34:17,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:17,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855748058] [2022-11-18 19:34:17,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855748058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:17,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:17,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:34:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430400902] [2022-11-18 19:34:17,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:17,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:34:17,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:17,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:34:17,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:34:17,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:34:17,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 478 transitions, 6444 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:34:17,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:17,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:34:17,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:25,761 INFO L130 PetriNetUnfolder]: 3794/10710 cut-off events. [2022-11-18 19:34:25,762 INFO L131 PetriNetUnfolder]: For 114994/114994 co-relation queries the response was YES. [2022-11-18 19:34:25,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48405 conditions, 10710 events. 3794/10710 cut-off events. For 114994/114994 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 96194 event pairs, 848 based on Foata normal form. 28/10700 useless extension candidates. Maximal degree in co-relation 48019. Up to 4873 conditions per place. [2022-11-18 19:34:26,035 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 475 selfloop transitions, 188 changer transitions 0/754 dead transitions. [2022-11-18 19:34:26,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 754 transitions, 10238 flow [2022-11-18 19:34:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:34:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 19:34:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2174 transitions. [2022-11-18 19:34:26,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6722325293753865 [2022-11-18 19:34:26,043 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2174 transitions. [2022-11-18 19:34:26,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2174 transitions. [2022-11-18 19:34:26,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:26,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2174 transitions. [2022-11-18 19:34:26,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 65.87878787878788) internal successors, (2174), 33 states have internal predecessors, (2174), 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 19:34:26,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 98.0) internal successors, (3332), 34 states have internal predecessors, (3332), 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 19:34:26,063 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 98.0) internal successors, (3332), 34 states have internal predecessors, (3332), 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 19:34:26,064 INFO L175 Difference]: Start difference. First operand has 422 places, 478 transitions, 6444 flow. Second operand 33 states and 2174 transitions. [2022-11-18 19:34:26,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 754 transitions, 10238 flow [2022-11-18 19:34:27,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 754 transitions, 9814 flow, removed 185 selfloop flow, removed 5 redundant places. [2022-11-18 19:34:27,296 INFO L231 Difference]: Finished difference. Result has 461 places, 511 transitions, 7381 flow [2022-11-18 19:34:27,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=6134, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7381, PETRI_PLACES=461, PETRI_TRANSITIONS=511} [2022-11-18 19:34:27,298 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 366 predicate places. [2022-11-18 19:34:27,298 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 511 transitions, 7381 flow [2022-11-18 19:34:27,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:34:27,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:27,300 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:27,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:34:27,300 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:34:27,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:27,301 INFO L85 PathProgramCache]: Analyzing trace with hash -416498069, now seen corresponding path program 6 times [2022-11-18 19:34:27,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:27,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605027253] [2022-11-18 19:34:27,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:27,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:34:28,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:28,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605027253] [2022-11-18 19:34:28,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605027253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:28,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:28,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:34:28,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115193011] [2022-11-18 19:34:28,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:28,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:34:28,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:28,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:34:28,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:34:28,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:34:28,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 511 transitions, 7381 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:34:28,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:28,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:34:28,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:37,686 INFO L130 PetriNetUnfolder]: 4110/11576 cut-off events. [2022-11-18 19:34:37,687 INFO L131 PetriNetUnfolder]: For 158167/158167 co-relation queries the response was YES. [2022-11-18 19:34:37,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55323 conditions, 11576 events. 4110/11576 cut-off events. For 158167/158167 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 105401 event pairs, 895 based on Foata normal form. 30/11569 useless extension candidates. Maximal degree in co-relation 54924. Up to 4560 conditions per place. [2022-11-18 19:34:37,999 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 442 selfloop transitions, 236 changer transitions 0/769 dead transitions. [2022-11-18 19:34:37,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 769 transitions, 11191 flow [2022-11-18 19:34:38,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 19:34:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 19:34:38,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2277 transitions. [2022-11-18 19:34:38,007 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6638483965014578 [2022-11-18 19:34:38,007 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2277 transitions. [2022-11-18 19:34:38,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2277 transitions. [2022-11-18 19:34:38,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:38,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2277 transitions. [2022-11-18 19:34:38,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 65.05714285714286) internal successors, (2277), 35 states have internal predecessors, (2277), 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 19:34:38,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 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 19:34:38,027 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 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 19:34:38,028 INFO L175 Difference]: Start difference. First operand has 461 places, 511 transitions, 7381 flow. Second operand 35 states and 2277 transitions. [2022-11-18 19:34:38,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 769 transitions, 11191 flow [2022-11-18 19:34:39,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 769 transitions, 10754 flow, removed 105 selfloop flow, removed 16 redundant places. [2022-11-18 19:34:39,424 INFO L231 Difference]: Finished difference. Result has 488 places, 538 transitions, 8322 flow [2022-11-18 19:34:39,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=6959, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8322, PETRI_PLACES=488, PETRI_TRANSITIONS=538} [2022-11-18 19:34:39,425 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 393 predicate places. [2022-11-18 19:34:39,425 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 538 transitions, 8322 flow [2022-11-18 19:34:39,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:34:39,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:39,426 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:39,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:34:39,427 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:34:39,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:39,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1737405319, now seen corresponding path program 7 times [2022-11-18 19:34:39,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:39,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201663196] [2022-11-18 19:34:39,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:39,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:34:40,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:40,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201663196] [2022-11-18 19:34:40,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201663196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:40,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:40,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:34:40,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907114681] [2022-11-18 19:34:40,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:40,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:34:40,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:34:40,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:34:40,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:34:40,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 538 transitions, 8322 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:34:40,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:40,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:34:40,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:50,204 INFO L130 PetriNetUnfolder]: 4340/12280 cut-off events. [2022-11-18 19:34:50,204 INFO L131 PetriNetUnfolder]: For 201177/201177 co-relation queries the response was YES. [2022-11-18 19:34:50,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61383 conditions, 12280 events. 4340/12280 cut-off events. For 201177/201177 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 113109 event pairs, 797 based on Foata normal form. 28/12272 useless extension candidates. Maximal degree in co-relation 60978. Up to 3969 conditions per place. [2022-11-18 19:34:50,531 INFO L137 encePairwiseOnDemand]: 80/98 looper letters, 444 selfloop transitions, 280 changer transitions 0/815 dead transitions. [2022-11-18 19:34:50,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 815 transitions, 12270 flow [2022-11-18 19:34:50,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 19:34:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 19:34:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2471 transitions. [2022-11-18 19:34:50,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6635338345864662 [2022-11-18 19:34:50,538 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2471 transitions. [2022-11-18 19:34:50,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2471 transitions. [2022-11-18 19:34:50,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:50,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2471 transitions. [2022-11-18 19:34:50,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 65.02631578947368) internal successors, (2471), 38 states have internal predecessors, (2471), 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 19:34:50,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 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 19:34:50,560 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 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 19:34:50,560 INFO L175 Difference]: Start difference. First operand has 488 places, 538 transitions, 8322 flow. Second operand 38 states and 2471 transitions. [2022-11-18 19:34:50,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 815 transitions, 12270 flow [2022-11-18 19:34:52,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 815 transitions, 11819 flow, removed 107 selfloop flow, removed 20 redundant places. [2022-11-18 19:34:52,106 INFO L231 Difference]: Finished difference. Result has 511 places, 551 transitions, 8943 flow [2022-11-18 19:34:52,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=7877, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8943, PETRI_PLACES=511, PETRI_TRANSITIONS=551} [2022-11-18 19:34:52,107 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 416 predicate places. [2022-11-18 19:34:52,107 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 551 transitions, 8943 flow [2022-11-18 19:34:52,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:34:52,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:52,108 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:52,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:34:52,108 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:34:52,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:52,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1940840716, now seen corresponding path program 3 times [2022-11-18 19:34:52,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:52,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740945298] [2022-11-18 19:34:52,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:52,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:34:53,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:53,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740945298] [2022-11-18 19:34:53,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740945298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:53,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:53,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:34:53,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539954704] [2022-11-18 19:34:53,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:53,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:34:53,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:53,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:34:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:34:53,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:34:53,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 551 transitions, 8943 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:34:53,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:53,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:34:53,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:35:03,670 INFO L130 PetriNetUnfolder]: 4667/13182 cut-off events. [2022-11-18 19:35:03,670 INFO L131 PetriNetUnfolder]: For 249277/249277 co-relation queries the response was YES. [2022-11-18 19:35:03,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68749 conditions, 13182 events. 4667/13182 cut-off events. For 249277/249277 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 125202 event pairs, 729 based on Foata normal form. 32/13159 useless extension candidates. Maximal degree in co-relation 68336. Up to 6104 conditions per place. [2022-11-18 19:35:04,521 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 604 selfloop transitions, 239 changer transitions 0/934 dead transitions. [2022-11-18 19:35:04,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 934 transitions, 15894 flow [2022-11-18 19:35:04,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 19:35:04,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 19:35:04,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2360 transitions. [2022-11-18 19:35:04,529 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6689342403628118 [2022-11-18 19:35:04,529 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2360 transitions. [2022-11-18 19:35:04,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2360 transitions. [2022-11-18 19:35:04,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:04,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2360 transitions. [2022-11-18 19:35:04,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 65.55555555555556) internal successors, (2360), 36 states have internal predecessors, (2360), 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 19:35:04,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 98.0) internal successors, (3626), 37 states have internal predecessors, (3626), 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 19:35:04,548 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 98.0) internal successors, (3626), 37 states have internal predecessors, (3626), 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 19:35:04,549 INFO L175 Difference]: Start difference. First operand has 511 places, 551 transitions, 8943 flow. Second operand 36 states and 2360 transitions. [2022-11-18 19:35:04,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 934 transitions, 15894 flow [2022-11-18 19:35:06,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 934 transitions, 14785 flow, removed 146 selfloop flow, removed 35 redundant places. [2022-11-18 19:35:06,636 INFO L231 Difference]: Finished difference. Result has 523 places, 584 transitions, 9327 flow [2022-11-18 19:35:06,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=8024, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9327, PETRI_PLACES=523, PETRI_TRANSITIONS=584} [2022-11-18 19:35:06,637 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 428 predicate places. [2022-11-18 19:35:06,637 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 584 transitions, 9327 flow [2022-11-18 19:35:06,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:35:06,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:35:06,638 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:35:06,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:35:06,639 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:35:06,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:06,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1234959968, now seen corresponding path program 4 times [2022-11-18 19:35:06,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:06,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488887562] [2022-11-18 19:35:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:06,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:35:07,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:07,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488887562] [2022-11-18 19:35:07,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488887562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:07,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:07,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:35:07,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610713148] [2022-11-18 19:35:07,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:07,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:35:07,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:07,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:35:07,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:35:07,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:35:07,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 584 transitions, 9327 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:35:07,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:35:07,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:35:07,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:35:19,017 INFO L130 PetriNetUnfolder]: 5019/14165 cut-off events. [2022-11-18 19:35:19,017 INFO L131 PetriNetUnfolder]: For 277886/277886 co-relation queries the response was YES. [2022-11-18 19:35:19,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75600 conditions, 14165 events. 5019/14165 cut-off events. For 277886/277886 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 136474 event pairs, 672 based on Foata normal form. 34/14153 useless extension candidates. Maximal degree in co-relation 75179. Up to 5366 conditions per place. [2022-11-18 19:35:19,453 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 535 selfloop transitions, 316 changer transitions 0/942 dead transitions. [2022-11-18 19:35:19,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 942 transitions, 16020 flow [2022-11-18 19:35:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 19:35:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 19:35:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2463 transitions. [2022-11-18 19:35:19,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6613856068743287 [2022-11-18 19:35:19,458 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2463 transitions. [2022-11-18 19:35:19,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2463 transitions. [2022-11-18 19:35:19,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:19,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2463 transitions. [2022-11-18 19:35:19,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 64.8157894736842) internal successors, (2463), 38 states have internal predecessors, (2463), 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 19:35:19,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 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 19:35:19,473 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 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 19:35:19,473 INFO L175 Difference]: Start difference. First operand has 523 places, 584 transitions, 9327 flow. Second operand 38 states and 2463 transitions. [2022-11-18 19:35:19,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 942 transitions, 16020 flow [2022-11-18 19:35:22,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 942 transitions, 15725 flow, removed 52 selfloop flow, removed 14 redundant places. [2022-11-18 19:35:22,333 INFO L231 Difference]: Finished difference. Result has 555 places, 611 transitions, 10566 flow [2022-11-18 19:35:22,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=9032, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10566, PETRI_PLACES=555, PETRI_TRANSITIONS=611} [2022-11-18 19:35:22,335 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 460 predicate places. [2022-11-18 19:35:22,336 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 611 transitions, 10566 flow [2022-11-18 19:35:22,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:35:22,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:35:22,337 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:35:22,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 19:35:22,338 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-18 19:35:22,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:22,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1034817384, now seen corresponding path program 5 times [2022-11-18 19:35:22,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:22,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613301183] [2022-11-18 19:35:22,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:22,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:35:23,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613301183] [2022-11-18 19:35:23,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613301183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:23,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:23,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:35:23,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735448643] [2022-11-18 19:35:23,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:23,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:35:23,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:23,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:35:23,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:35:23,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-18 19:35:23,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 611 transitions, 10566 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 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 19:35:23,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:35:23,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-18 19:35:23,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand