./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8 --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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- 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-e04fb08 [2022-11-16 11:15:13,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:15:13,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:15:13,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:15:13,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:15:13,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:15:13,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:15:13,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:15:13,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:15:13,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:15:13,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:15:13,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:15:13,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:15:13,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:15:13,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:15:13,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:15:13,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:15:13,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:15:13,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:15:13,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:15:13,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:15:13,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:15:13,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:15:13,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:15:13,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:15:13,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:15:13,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:15:13,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:15:13,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:15:13,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:15:13,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:15:13,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:15:13,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:15:13,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:15:13,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:15:13,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:15:13,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:15:13,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:15:13,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:15:13,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:15:13,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:15:13,858 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:15:13,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:15:13,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:15:13,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:15:13,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:15:13,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:15:13,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:15:13,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:15:13,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:15:13,905 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:15:13,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:15:13,906 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:15:13,906 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:15:13,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:15:13,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:15:13,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:15:13,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:15:13,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:15:13,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:15:13,908 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:15:13,908 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:15:13,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:15:13,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:15:13,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:15:13,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:15:13,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:15:13,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:15:13,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:15:13,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:15:13,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:15:13,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:15:13,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:15:13,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:15:13,911 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:15:13,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:15:13,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:15:13,911 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_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2022-11-16 11:15:14,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:15:14,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:15:14,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:15:14,264 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:15:14,265 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:15:14,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2022-11-16 11:15:14,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/data/606190324/e6addb3b2863472bb14b66cc81db7fae/FLAG0901a62de [2022-11-16 11:15:14,937 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:15:14,938 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2022-11-16 11:15:14,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/data/606190324/e6addb3b2863472bb14b66cc81db7fae/FLAG0901a62de [2022-11-16 11:15:15,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/data/606190324/e6addb3b2863472bb14b66cc81db7fae [2022-11-16 11:15:15,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:15:15,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:15:15,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:15:15,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:15:15,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:15:15,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:15:15" (1/1) ... [2022-11-16 11:15:15,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e90a166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:15, skipping insertion in model container [2022-11-16 11:15:15,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:15:15" (1/1) ... [2022-11-16 11:15:15,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:15:15,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:15:16,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:15:16,090 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:15:16,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:15:16,256 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:15:16,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16 WrapperNode [2022-11-16 11:15:16,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:15:16,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:15:16,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:15:16,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:15:16,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (1/1) ... [2022-11-16 11:15:16,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (1/1) ... [2022-11-16 11:15:16,360 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-11-16 11:15:16,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:15:16,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:15:16,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:15:16,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:15:16,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (1/1) ... [2022-11-16 11:15:16,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (1/1) ... [2022-11-16 11:15:16,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (1/1) ... [2022-11-16 11:15:16,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (1/1) ... [2022-11-16 11:15:16,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (1/1) ... [2022-11-16 11:15:16,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (1/1) ... [2022-11-16 11:15:16,429 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (1/1) ... [2022-11-16 11:15:16,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (1/1) ... [2022-11-16 11:15:16,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:15:16,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:15:16,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:15:16,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:15:16,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (1/1) ... [2022-11-16 11:15:16,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:15:16,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:15:16,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:15:16,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:15:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:15:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:15:16,551 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:15:16,770 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:15:16,773 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:15:17,073 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:15:17,083 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:15:17,087 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:15:17,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:15:17 BoogieIcfgContainer [2022-11-16 11:15:17,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:15:17,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:15:17,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:15:17,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:15:17,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:15:15" (1/3) ... [2022-11-16 11:15:17,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee29614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:15:17, skipping insertion in model container [2022-11-16 11:15:17,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:16" (2/3) ... [2022-11-16 11:15:17,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee29614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:15:17, skipping insertion in model container [2022-11-16 11:15:17,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:15:17" (3/3) ... [2022-11-16 11:15:17,124 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2022-11-16 11:15:17,135 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:15:17,149 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:15:17,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 11:15:17,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:15:17,261 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:15:17,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 110 transitions, 225 flow [2022-11-16 11:15:17,391 INFO L130 PetriNetUnfolder]: 6/109 cut-off events. [2022-11-16 11:15:17,392 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:15:17,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 109 events. 6/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2022-11-16 11:15:17,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 110 transitions, 225 flow [2022-11-16 11:15:17,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 109 transitions, 221 flow [2022-11-16 11:15:17,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:15:17,429 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;@52f153fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:15:17,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 11:15:17,437 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2022-11-16 11:15:17,438 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:15:17,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:17,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:17,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:17,448 INFO L85 PathProgramCache]: Analyzing trace with hash -965315634, now seen corresponding path program 1 times [2022-11-16 11:15:17,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:17,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495386327] [2022-11-16 11:15:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:17,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:17,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:17,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495386327] [2022-11-16 11:15:17,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495386327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:17,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:17,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:15:17,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526532099] [2022-11-16 11:15:17,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:17,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:15:17,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:17,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:15:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:15:17,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-16 11:15:17,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 109 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:17,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:17,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-16 11:15:17,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:18,102 INFO L130 PetriNetUnfolder]: 3/113 cut-off events. [2022-11-16 11:15:18,103 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:15:18,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 113 events. 3/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 197 event pairs, 0 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 78. Up to 14 conditions per place. [2022-11-16 11:15:18,108 INFO L137 encePairwiseOnDemand]: 100/110 looper letters, 16 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2022-11-16 11:15:18,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 113 transitions, 269 flow [2022-11-16 11:15:18,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:15:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:15:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 497 transitions. [2022-11-16 11:15:18,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9036363636363637 [2022-11-16 11:15:18,138 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 497 transitions. [2022-11-16 11:15:18,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 497 transitions. [2022-11-16 11:15:18,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:18,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 497 transitions. [2022-11-16 11:15:18,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.4) internal successors, (497), 5 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,158 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,166 INFO L175 Difference]: Start difference. First operand has 107 places, 109 transitions, 221 flow. Second operand 5 states and 497 transitions. [2022-11-16 11:15:18,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 113 transitions, 269 flow [2022-11-16 11:15:18,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 113 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:15:18,181 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 246 flow [2022-11-16 11:15:18,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2022-11-16 11:15:18,191 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 6 predicate places. [2022-11-16 11:15:18,191 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 246 flow [2022-11-16 11:15:18,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:18,192 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] [2022-11-16 11:15:18,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:15:18,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:18,194 INFO L85 PathProgramCache]: Analyzing trace with hash -852436165, now seen corresponding path program 1 times [2022-11-16 11:15:18,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:18,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435137551] [2022-11-16 11:15:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:18,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:15:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:18,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435137551] [2022-11-16 11:15:18,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435137551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:18,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:18,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:15:18,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311478360] [2022-11-16 11:15:18,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:18,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:15:18,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:18,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:15:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:15:18,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-16 11:15:18,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:18,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-16 11:15:18,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:18,475 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-11-16 11:15:18,475 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:15:18,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 112 events. 3/112 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 192 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 110. Up to 7 conditions per place. [2022-11-16 11:15:18,478 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 8 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2022-11-16 11:15:18,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 109 transitions, 276 flow [2022-11-16 11:15:18,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:15:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:15:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 484 transitions. [2022-11-16 11:15:18,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-11-16 11:15:18,481 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 484 transitions. [2022-11-16 11:15:18,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 484 transitions. [2022-11-16 11:15:18,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:18,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 484 transitions. [2022-11-16 11:15:18,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,488 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,488 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 246 flow. Second operand 5 states and 484 transitions. [2022-11-16 11:15:18,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 109 transitions, 276 flow [2022-11-16 11:15:18,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 109 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:15:18,494 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 264 flow [2022-11-16 11:15:18,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2022-11-16 11:15:18,495 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 9 predicate places. [2022-11-16 11:15:18,496 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 264 flow [2022-11-16 11:15:18,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:18,497 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] [2022-11-16 11:15:18,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:15:18,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash -655717080, now seen corresponding path program 1 times [2022-11-16 11:15:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:18,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37646930] [2022-11-16 11:15:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:18,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:18,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37646930] [2022-11-16 11:15:18,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37646930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:15:18,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104858891] [2022-11-16 11:15:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:18,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:18,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:15:18,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:15:18,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:15:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:18,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:15:18,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:15:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:18,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:15:18,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104858891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:18,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:15:18,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:15:18,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838084942] [2022-11-16 11:15:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:18,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:15:18,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:15:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:15:18,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-16 11:15:18,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:18,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-16 11:15:18,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:18,945 INFO L130 PetriNetUnfolder]: 3/111 cut-off events. [2022-11-16 11:15:18,945 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-16 11:15:18,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 111 events. 3/111 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 190 event pairs, 0 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 108. Up to 6 conditions per place. [2022-11-16 11:15:18,947 INFO L137 encePairwiseOnDemand]: 105/110 looper letters, 12 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2022-11-16 11:15:18,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 302 flow [2022-11-16 11:15:18,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:15:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:15:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 677 transitions. [2022-11-16 11:15:18,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8792207792207792 [2022-11-16 11:15:18,951 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 677 transitions. [2022-11-16 11:15:18,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 677 transitions. [2022-11-16 11:15:18,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:18,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 677 transitions. [2022-11-16 11:15:18,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,958 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,958 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 264 flow. Second operand 7 states and 677 transitions. [2022-11-16 11:15:18,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 302 flow [2022-11-16 11:15:18,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 111 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:15:18,963 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 260 flow [2022-11-16 11:15:18,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2022-11-16 11:15:18,965 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 11 predicate places. [2022-11-16 11:15:18,965 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 260 flow [2022-11-16 11:15:18,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:18,966 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] [2022-11-16 11:15:18,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:15:19,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 11:15:19,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:19,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:19,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1921866257, now seen corresponding path program 1 times [2022-11-16 11:15:19,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:19,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604879283] [2022-11-16 11:15:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:19,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:19,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:19,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604879283] [2022-11-16 11:15:19,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604879283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:15:19,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051600258] [2022-11-16 11:15:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:19,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:19,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:15:19,314 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:15:19,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:15:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:19,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:15:19,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:15:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:15:19,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:15:19,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051600258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:19,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:15:19,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 11:15:19,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121613087] [2022-11-16 11:15:19,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:19,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:15:19,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:19,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:15:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:15:19,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 110 [2022-11-16 11:15:19,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:19,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:19,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 110 [2022-11-16 11:15:19,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:19,569 INFO L130 PetriNetUnfolder]: 3/135 cut-off events. [2022-11-16 11:15:19,569 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-16 11:15:19,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 135 events. 3/135 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 149 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 136. Up to 10 conditions per place. [2022-11-16 11:15:19,572 INFO L137 encePairwiseOnDemand]: 107/110 looper letters, 11 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-11-16 11:15:19,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 294 flow [2022-11-16 11:15:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:15:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:15:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2022-11-16 11:15:19,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-11-16 11:15:19,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2022-11-16 11:15:19,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2022-11-16 11:15:19,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:19,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2022-11-16 11:15:19,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:19,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:19,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:19,578 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 260 flow. Second operand 3 states and 308 transitions. [2022-11-16 11:15:19,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 294 flow [2022-11-16 11:15:19,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 112 transitions, 283 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:15:19,583 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 261 flow [2022-11-16 11:15:19,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2022-11-16 11:15:19,584 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 9 predicate places. [2022-11-16 11:15:19,585 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 261 flow [2022-11-16 11:15:19,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:19,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:19,585 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] [2022-11-16 11:15:19,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:15:19,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:19,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:19,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1806466692, now seen corresponding path program 1 times [2022-11-16 11:15:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:19,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766738730] [2022-11-16 11:15:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:19,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:19,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:19,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766738730] [2022-11-16 11:15:19,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766738730] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:15:19,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276339252] [2022-11-16 11:15:19,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:19,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:19,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:15:19,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:15:19,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:15:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:20,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:15:20,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:15:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:20,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:15:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:20,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276339252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:15:20,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:15:20,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:15:20,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480801634] [2022-11-16 11:15:20,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:15:20,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:15:20,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:20,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:15:20,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:15:20,187 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-16 11:15:20,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 261 flow. Second operand has 10 states, 10 states have (on average 96.7) internal successors, (967), 10 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:20,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-16 11:15:20,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:20,353 INFO L130 PetriNetUnfolder]: 3/143 cut-off events. [2022-11-16 11:15:20,353 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 11:15:20,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 143 events. 3/143 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 126. Up to 7 conditions per place. [2022-11-16 11:15:20,358 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 17 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2022-11-16 11:15:20,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 349 flow [2022-11-16 11:15:20,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:15:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:15:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 874 transitions. [2022-11-16 11:15:20,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8828282828282829 [2022-11-16 11:15:20,362 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 874 transitions. [2022-11-16 11:15:20,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 874 transitions. [2022-11-16 11:15:20,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:20,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 874 transitions. [2022-11-16 11:15:20,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.11111111111111) internal successors, (874), 9 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,368 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,368 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 261 flow. Second operand 9 states and 874 transitions. [2022-11-16 11:15:20,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 349 flow [2022-11-16 11:15:20,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 120 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:15:20,373 INFO L231 Difference]: Finished difference. Result has 127 places, 113 transitions, 317 flow [2022-11-16 11:15:20,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=317, PETRI_PLACES=127, PETRI_TRANSITIONS=113} [2022-11-16 11:15:20,377 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 20 predicate places. [2022-11-16 11:15:20,377 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 113 transitions, 317 flow [2022-11-16 11:15:20,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.7) internal successors, (967), 10 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:20,393 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] [2022-11-16 11:15:20,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:15:20,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:20,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:20,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:20,595 INFO L85 PathProgramCache]: Analyzing trace with hash 510163484, now seen corresponding path program 2 times [2022-11-16 11:15:20,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:20,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392219033] [2022-11-16 11:15:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:20,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:20,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:20,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392219033] [2022-11-16 11:15:20,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392219033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:15:20,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850678687] [2022-11-16 11:15:20,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:15:20,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:20,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:15:20,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:15:20,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:15:20,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:15:20,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:15:20,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:15:20,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:15:21,094 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 [2022-11-16 11:15:21,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:15:21,481 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 [2022-11-16 11:15:21,611 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 [2022-11-16 11:15:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:15:21,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:15:21,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850678687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:21,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:15:21,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2022-11-16 11:15:21,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146976882] [2022-11-16 11:15:21,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:21,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:15:21,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:21,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:15:21,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:15:21,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-16 11:15:21,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 113 transitions, 317 flow. Second operand has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:21,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:21,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-16 11:15:21,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:22,223 INFO L130 PetriNetUnfolder]: 274/1168 cut-off events. [2022-11-16 11:15:22,223 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 11:15:22,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 1168 events. 274/1168 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 8131 event pairs, 78 based on Foata normal form. 0/1000 useless extension candidates. Maximal degree in co-relation 1722. Up to 378 conditions per place. [2022-11-16 11:15:22,232 INFO L137 encePairwiseOnDemand]: 99/110 looper letters, 69 selfloop transitions, 15 changer transitions 0/166 dead transitions. [2022-11-16 11:15:22,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 166 transitions, 591 flow [2022-11-16 11:15:22,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:15:22,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:15:22,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 921 transitions. [2022-11-16 11:15:22,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7611570247933884 [2022-11-16 11:15:22,238 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 921 transitions. [2022-11-16 11:15:22,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 921 transitions. [2022-11-16 11:15:22,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:22,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 921 transitions. [2022-11-16 11:15:22,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 83.72727272727273) internal successors, (921), 11 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:22,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 110.0) internal successors, (1320), 12 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:22,245 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 110.0) internal successors, (1320), 12 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:22,246 INFO L175 Difference]: Start difference. First operand has 127 places, 113 transitions, 317 flow. Second operand 11 states and 921 transitions. [2022-11-16 11:15:22,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 166 transitions, 591 flow [2022-11-16 11:15:22,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 166 transitions, 577 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-16 11:15:22,254 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 390 flow [2022-11-16 11:15:22,255 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=390, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2022-11-16 11:15:22,258 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 31 predicate places. [2022-11-16 11:15:22,258 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 390 flow [2022-11-16 11:15:22,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:22,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:22,260 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] [2022-11-16 11:15:22,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:15:22,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:22,467 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1818336817, now seen corresponding path program 1 times [2022-11-16 11:15:22,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:22,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882367995] [2022-11-16 11:15:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:22,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:22,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:22,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882367995] [2022-11-16 11:15:22,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882367995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:15:22,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366642467] [2022-11-16 11:15:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:22,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:22,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:15:22,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:15:22,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:15:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:22,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:15:22,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:15:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:22,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:15:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:23,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366642467] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:15:23,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:15:23,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:15:23,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488011035] [2022-11-16 11:15:23,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:15:23,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:15:23,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:15:23,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:15:23,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-16 11:15:23,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 390 flow. Second operand has 18 states, 18 states have (on average 97.05555555555556) internal successors, (1747), 18 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:23,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-16 11:15:23,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:23,406 INFO L130 PetriNetUnfolder]: 24/629 cut-off events. [2022-11-16 11:15:23,406 INFO L131 PetriNetUnfolder]: For 149/153 co-relation queries the response was YES. [2022-11-16 11:15:23,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 629 events. 24/629 cut-off events. For 149/153 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3133 event pairs, 7 based on Foata normal form. 4/550 useless extension candidates. Maximal degree in co-relation 702. Up to 25 conditions per place. [2022-11-16 11:15:23,414 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 33 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2022-11-16 11:15:23,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 159 transitions, 660 flow [2022-11-16 11:15:23,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:15:23,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:15:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2032 transitions. [2022-11-16 11:15:23,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8796536796536797 [2022-11-16 11:15:23,421 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2032 transitions. [2022-11-16 11:15:23,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2032 transitions. [2022-11-16 11:15:23,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:23,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2032 transitions. [2022-11-16 11:15:23,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.76190476190476) internal successors, (2032), 21 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,438 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,438 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 390 flow. Second operand 21 states and 2032 transitions. [2022-11-16 11:15:23,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 159 transitions, 660 flow [2022-11-16 11:15:23,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 159 transitions, 656 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:15:23,445 INFO L231 Difference]: Finished difference. Result has 161 places, 137 transitions, 550 flow [2022-11-16 11:15:23,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=550, PETRI_PLACES=161, PETRI_TRANSITIONS=137} [2022-11-16 11:15:23,447 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 54 predicate places. [2022-11-16 11:15:23,447 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 137 transitions, 550 flow [2022-11-16 11:15:23,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 97.05555555555556) internal successors, (1747), 18 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:23,449 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] [2022-11-16 11:15:23,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:15:23,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:15:23,669 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:23,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:23,669 INFO L85 PathProgramCache]: Analyzing trace with hash 384223089, now seen corresponding path program 2 times [2022-11-16 11:15:23,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:23,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190054397] [2022-11-16 11:15:23,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:23,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:24,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:24,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190054397] [2022-11-16 11:15:24,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190054397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:15:24,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442342679] [2022-11-16 11:15:24,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:15:24,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:24,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:15:24,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:15:24,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:15:24,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:15:24,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:15:24,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:15:24,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:15:24,349 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 [2022-11-16 11:15:24,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:15:24,822 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 [2022-11-16 11:15:24,965 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 [2022-11-16 11:15:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-16 11:15:25,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:15:25,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442342679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:25,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:15:25,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 26 [2022-11-16 11:15:25,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213732149] [2022-11-16 11:15:25,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:25,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:15:25,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:25,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:15:25,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:15:25,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-16 11:15:25,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 137 transitions, 550 flow. Second operand has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:25,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:25,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-16 11:15:25,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:25,553 INFO L130 PetriNetUnfolder]: 251/1190 cut-off events. [2022-11-16 11:15:25,553 INFO L131 PetriNetUnfolder]: For 411/431 co-relation queries the response was YES. [2022-11-16 11:15:25,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 1190 events. 251/1190 cut-off events. For 411/431 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8063 event pairs, 79 based on Foata normal form. 10/1029 useless extension candidates. Maximal degree in co-relation 2041. Up to 471 conditions per place. [2022-11-16 11:15:25,592 INFO L137 encePairwiseOnDemand]: 97/110 looper letters, 54 selfloop transitions, 17 changer transitions 0/171 dead transitions. [2022-11-16 11:15:25,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 171 transitions, 808 flow [2022-11-16 11:15:25,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:15:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:15:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 824 transitions. [2022-11-16 11:15:25,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7490909090909091 [2022-11-16 11:15:25,599 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 824 transitions. [2022-11-16 11:15:25,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 824 transitions. [2022-11-16 11:15:25,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:25,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 824 transitions. [2022-11-16 11:15:25,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.4) internal successors, (824), 10 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:25,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:25,607 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:25,607 INFO L175 Difference]: Start difference. First operand has 161 places, 137 transitions, 550 flow. Second operand 10 states and 824 transitions. [2022-11-16 11:15:25,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 171 transitions, 808 flow [2022-11-16 11:15:25,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 171 transitions, 764 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-11-16 11:15:25,615 INFO L231 Difference]: Finished difference. Result has 168 places, 152 transitions, 619 flow [2022-11-16 11:15:25,615 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=619, PETRI_PLACES=168, PETRI_TRANSITIONS=152} [2022-11-16 11:15:25,618 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 61 predicate places. [2022-11-16 11:15:25,618 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 152 transitions, 619 flow [2022-11-16 11:15:25,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:25,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:25,619 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] [2022-11-16 11:15:25,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:15:25,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:25,825 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:25,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1422313806, now seen corresponding path program 1 times [2022-11-16 11:15:25,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:25,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300380094] [2022-11-16 11:15:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:25,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:26,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:26,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300380094] [2022-11-16 11:15:26,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300380094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:15:26,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17273961] [2022-11-16 11:15:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:26,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:26,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:15:26,156 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:15:26,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:15:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:26,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:15:26,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:15:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:26,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:15:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:26,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17273961] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:15:26,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:15:26,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 11:15:26,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811113528] [2022-11-16 11:15:26,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:15:26,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:15:26,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:26,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:15:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:15:26,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-16 11:15:26,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 152 transitions, 619 flow. Second operand has 23 states, 23 states have (on average 97.30434782608695) internal successors, (2238), 23 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:26,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:26,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-16 11:15:26,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:27,532 INFO L130 PetriNetUnfolder]: 49/865 cut-off events. [2022-11-16 11:15:27,532 INFO L131 PetriNetUnfolder]: For 298/299 co-relation queries the response was YES. [2022-11-16 11:15:27,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 865 events. 49/865 cut-off events. For 298/299 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4863 event pairs, 12 based on Foata normal form. 4/747 useless extension candidates. Maximal degree in co-relation 1104. Up to 32 conditions per place. [2022-11-16 11:15:27,542 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 45 selfloop transitions, 30 changer transitions 0/195 dead transitions. [2022-11-16 11:15:27,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 195 transitions, 967 flow [2022-11-16 11:15:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:15:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:15:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2898 transitions. [2022-11-16 11:15:27,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8781818181818182 [2022-11-16 11:15:27,550 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2898 transitions. [2022-11-16 11:15:27,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2898 transitions. [2022-11-16 11:15:27,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:27,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2898 transitions. [2022-11-16 11:15:27,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 96.6) internal successors, (2898), 30 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:27,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 110.0) internal successors, (3410), 31 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:27,572 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 110.0) internal successors, (3410), 31 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:27,572 INFO L175 Difference]: Start difference. First operand has 168 places, 152 transitions, 619 flow. Second operand 30 states and 2898 transitions. [2022-11-16 11:15:27,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 195 transitions, 967 flow [2022-11-16 11:15:27,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 195 transitions, 963 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:15:27,582 INFO L231 Difference]: Finished difference. Result has 199 places, 162 transitions, 781 flow [2022-11-16 11:15:27,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=781, PETRI_PLACES=199, PETRI_TRANSITIONS=162} [2022-11-16 11:15:27,583 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 92 predicate places. [2022-11-16 11:15:27,584 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 162 transitions, 781 flow [2022-11-16 11:15:27,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 97.30434782608695) internal successors, (2238), 23 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:27,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:27,586 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] [2022-11-16 11:15:27,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:15:27,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_292014ba-f6b2-41e0-8a7b-843f5a3247bb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:27,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:27,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:27,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2012827109, now seen corresponding path program 2 times [2022-11-16 11:15:27,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:27,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369359777] [2022-11-16 11:15:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:27,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:15:28,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:28,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369359777] [2022-11-16 11:15:28,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369359777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:28,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:28,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:15:28,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106327288] [2022-11-16 11:15:28,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:28,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:15:28,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:28,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:15:28,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:15:28,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-16 11:15:28,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 162 transitions, 781 flow. Second operand has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:28,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:28,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-16 11:15:28,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:29,032 INFO L130 PetriNetUnfolder]: 364/1618 cut-off events. [2022-11-16 11:15:29,034 INFO L131 PetriNetUnfolder]: For 1012/1035 co-relation queries the response was YES. [2022-11-16 11:15:29,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 1618 events. 364/1618 cut-off events. For 1012/1035 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11687 event pairs, 120 based on Foata normal form. 14/1415 useless extension candidates. Maximal degree in co-relation 3039. Up to 566 conditions per place. [2022-11-16 11:15:29,051 INFO L137 encePairwiseOnDemand]: 97/110 looper letters, 74 selfloop transitions, 24 changer transitions 0/208 dead transitions. [2022-11-16 11:15:29,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 208 transitions, 1154 flow [2022-11-16 11:15:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:15:29,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:15:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1078 transitions. [2022-11-16 11:15:29,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7538461538461538 [2022-11-16 11:15:29,058 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1078 transitions. [2022-11-16 11:15:29,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1078 transitions. [2022-11-16 11:15:29,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:29,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1078 transitions. [2022-11-16 11:15:29,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 82.92307692307692) internal successors, (1078), 13 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) [2022-11-16 11:15:29,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:29,068 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:29,068 INFO L175 Difference]: Start difference. First operand has 199 places, 162 transitions, 781 flow. Second operand 13 states and 1078 transitions. [2022-11-16 11:15:29,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 208 transitions, 1154 flow [2022-11-16 11:15:29,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 208 transitions, 1108 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 11:15:29,079 INFO L231 Difference]: Finished difference. Result has 196 places, 167 transitions, 838 flow [2022-11-16 11:15:29,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=838, PETRI_PLACES=196, PETRI_TRANSITIONS=167} [2022-11-16 11:15:29,081 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 89 predicate places. [2022-11-16 11:15:29,081 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 167 transitions, 838 flow [2022-11-16 11:15:29,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:29,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:29,082 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] [2022-11-16 11:15:29,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:15:29,082 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash -114159525, now seen corresponding path program 1 times [2022-11-16 11:15:29,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:29,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223726023] [2022-11-16 11:15:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:29,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:15:29,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:29,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223726023] [2022-11-16 11:15:29,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223726023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:29,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:29,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:15:29,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455992030] [2022-11-16 11:15:29,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:29,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:15:29,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:29,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:15:29,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:15:29,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-16 11:15:29,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 167 transitions, 838 flow. Second operand has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:29,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:29,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-16 11:15:29,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:30,218 INFO L130 PetriNetUnfolder]: 310/1426 cut-off events. [2022-11-16 11:15:30,218 INFO L131 PetriNetUnfolder]: For 1210/1274 co-relation queries the response was YES. [2022-11-16 11:15:30,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3220 conditions, 1426 events. 310/1426 cut-off events. For 1210/1274 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10246 event pairs, 30 based on Foata normal form. 15/1270 useless extension candidates. Maximal degree in co-relation 2946. Up to 525 conditions per place. [2022-11-16 11:15:30,236 INFO L137 encePairwiseOnDemand]: 96/110 looper letters, 59 selfloop transitions, 24 changer transitions 0/195 dead transitions. [2022-11-16 11:15:30,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 195 transitions, 1164 flow [2022-11-16 11:15:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:15:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:15:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1062 transitions. [2022-11-16 11:15:30,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7426573426573426 [2022-11-16 11:15:30,239 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1062 transitions. [2022-11-16 11:15:30,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1062 transitions. [2022-11-16 11:15:30,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:30,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1062 transitions. [2022-11-16 11:15:30,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.6923076923077) internal successors, (1062), 13 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:30,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:30,248 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:30,249 INFO L175 Difference]: Start difference. First operand has 196 places, 167 transitions, 838 flow. Second operand 13 states and 1062 transitions. [2022-11-16 11:15:30,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 195 transitions, 1164 flow [2022-11-16 11:15:30,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 195 transitions, 1113 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-11-16 11:15:30,262 INFO L231 Difference]: Finished difference. Result has 203 places, 171 transitions, 903 flow [2022-11-16 11:15:30,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=903, PETRI_PLACES=203, PETRI_TRANSITIONS=171} [2022-11-16 11:15:30,264 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 96 predicate places. [2022-11-16 11:15:30,264 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 171 transitions, 903 flow [2022-11-16 11:15:30,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:30,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:30,266 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] [2022-11-16 11:15:30,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:15:30,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:30,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:30,268 INFO L85 PathProgramCache]: Analyzing trace with hash -450798860, now seen corresponding path program 1 times [2022-11-16 11:15:30,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:30,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677534701] [2022-11-16 11:15:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:30,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:15:30,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:30,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677534701] [2022-11-16 11:15:30,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677534701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:30,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:30,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:15:30,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298013240] [2022-11-16 11:15:30,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:30,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:15:30,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:30,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:15:30,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:15:30,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-16 11:15:30,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 171 transitions, 903 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:30,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:30,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-16 11:15:30,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:30,741 INFO L130 PetriNetUnfolder]: 75/1136 cut-off events. [2022-11-16 11:15:30,741 INFO L131 PetriNetUnfolder]: For 773/789 co-relation queries the response was YES. [2022-11-16 11:15:30,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1136 events. 75/1136 cut-off events. For 773/789 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7419 event pairs, 19 based on Foata normal form. 6/1035 useless extension candidates. Maximal degree in co-relation 1920. Up to 124 conditions per place. [2022-11-16 11:15:30,754 INFO L137 encePairwiseOnDemand]: 103/110 looper letters, 18 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2022-11-16 11:15:30,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 178 transitions, 963 flow [2022-11-16 11:15:30,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:15:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:15:30,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2022-11-16 11:15:30,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8963636363636364 [2022-11-16 11:15:30,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2022-11-16 11:15:30,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2022-11-16 11:15:30,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:30,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2022-11-16 11:15:30,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:30,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:30,759 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:30,759 INFO L175 Difference]: Start difference. First operand has 203 places, 171 transitions, 903 flow. Second operand 5 states and 493 transitions. [2022-11-16 11:15:30,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 178 transitions, 963 flow [2022-11-16 11:15:30,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 178 transitions, 946 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:15:30,770 INFO L231 Difference]: Finished difference. Result has 204 places, 174 transitions, 918 flow [2022-11-16 11:15:30,771 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=918, PETRI_PLACES=204, PETRI_TRANSITIONS=174} [2022-11-16 11:15:30,771 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 97 predicate places. [2022-11-16 11:15:30,771 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 174 transitions, 918 flow [2022-11-16 11:15:30,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:30,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:30,772 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] [2022-11-16 11:15:30,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:15:30,773 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:30,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:30,773 INFO L85 PathProgramCache]: Analyzing trace with hash 853234883, now seen corresponding path program 1 times [2022-11-16 11:15:30,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:30,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520145938] [2022-11-16 11:15:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:30,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:15:30,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:30,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520145938] [2022-11-16 11:15:30,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520145938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:30,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:30,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:15:30,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244099924] [2022-11-16 11:15:30,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:30,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:15:30,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:30,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:15:30,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:15:30,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 110 [2022-11-16 11:15:30,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 174 transitions, 918 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:30,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:30,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 110 [2022-11-16 11:15:30,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:31,230 INFO L130 PetriNetUnfolder]: 75/1119 cut-off events. [2022-11-16 11:15:31,231 INFO L131 PetriNetUnfolder]: For 749/755 co-relation queries the response was YES. [2022-11-16 11:15:31,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1119 events. 75/1119 cut-off events. For 749/755 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7246 event pairs, 19 based on Foata normal form. 3/1070 useless extension candidates. Maximal degree in co-relation 1977. Up to 83 conditions per place. [2022-11-16 11:15:31,244 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 18 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2022-11-16 11:15:31,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 180 transitions, 976 flow [2022-11-16 11:15:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:15:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:15:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 488 transitions. [2022-11-16 11:15:31,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872727272727273 [2022-11-16 11:15:31,246 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 488 transitions. [2022-11-16 11:15:31,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 488 transitions. [2022-11-16 11:15:31,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:31,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 488 transitions. [2022-11-16 11:15:31,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:31,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:31,250 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:31,250 INFO L175 Difference]: Start difference. First operand has 204 places, 174 transitions, 918 flow. Second operand 5 states and 488 transitions. [2022-11-16 11:15:31,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 180 transitions, 976 flow [2022-11-16 11:15:31,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 180 transitions, 974 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:15:31,263 INFO L231 Difference]: Finished difference. Result has 210 places, 176 transitions, 942 flow [2022-11-16 11:15:31,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=942, PETRI_PLACES=210, PETRI_TRANSITIONS=176} [2022-11-16 11:15:31,265 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 103 predicate places. [2022-11-16 11:15:31,265 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 176 transitions, 942 flow [2022-11-16 11:15:31,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:31,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:31,266 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] [2022-11-16 11:15:31,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:15:31,266 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:31,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:31,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1187987450, now seen corresponding path program 1 times [2022-11-16 11:15:31,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:31,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293052685] [2022-11-16 11:15:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:31,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:15:32,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:32,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293052685] [2022-11-16 11:15:32,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293052685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:32,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:32,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:15:32,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532212357] [2022-11-16 11:15:32,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:32,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:15:32,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:32,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:15:32,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:15:32,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-16 11:15:32,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 176 transitions, 942 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:32,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:32,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-16 11:15:32,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:34,888 INFO L130 PetriNetUnfolder]: 1689/4988 cut-off events. [2022-11-16 11:15:34,888 INFO L131 PetriNetUnfolder]: For 4801/4823 co-relation queries the response was YES. [2022-11-16 11:15:34,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13102 conditions, 4988 events. 1689/4988 cut-off events. For 4801/4823 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 38970 event pairs, 702 based on Foata normal form. 28/4856 useless extension candidates. Maximal degree in co-relation 12821. Up to 2271 conditions per place. [2022-11-16 11:15:34,961 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 214 selfloop transitions, 54 changer transitions 0/367 dead transitions. [2022-11-16 11:15:34,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 367 transitions, 2356 flow [2022-11-16 11:15:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:15:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-16 11:15:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1719 transitions. [2022-11-16 11:15:34,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6794466403162055 [2022-11-16 11:15:34,973 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1719 transitions. [2022-11-16 11:15:34,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1719 transitions. [2022-11-16 11:15:34,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:34,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1719 transitions. [2022-11-16 11:15:34,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 74.73913043478261) internal successors, (1719), 23 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:34,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 110.0) internal successors, (2640), 24 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:34,985 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 110.0) internal successors, (2640), 24 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:34,986 INFO L175 Difference]: Start difference. First operand has 210 places, 176 transitions, 942 flow. Second operand 23 states and 1719 transitions. [2022-11-16 11:15:34,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 367 transitions, 2356 flow [2022-11-16 11:15:35,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 367 transitions, 2352 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:15:35,029 INFO L231 Difference]: Finished difference. Result has 243 places, 208 transitions, 1399 flow [2022-11-16 11:15:35,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1399, PETRI_PLACES=243, PETRI_TRANSITIONS=208} [2022-11-16 11:15:35,031 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 136 predicate places. [2022-11-16 11:15:35,031 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 208 transitions, 1399 flow [2022-11-16 11:15:35,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:35,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:35,032 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] [2022-11-16 11:15:35,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:15:35,033 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:35,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1886310264, now seen corresponding path program 2 times [2022-11-16 11:15:35,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:35,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371222416] [2022-11-16 11:15:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:35,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:15:36,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:36,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371222416] [2022-11-16 11:15:36,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371222416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:36,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:36,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:15:36,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599851268] [2022-11-16 11:15:36,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:36,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:15:36,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:36,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:15:36,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:15:36,114 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-16 11:15:36,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 208 transitions, 1399 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:36,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:36,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-16 11:15:36,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:39,744 INFO L130 PetriNetUnfolder]: 2013/6075 cut-off events. [2022-11-16 11:15:39,744 INFO L131 PetriNetUnfolder]: For 12757/12766 co-relation queries the response was YES. [2022-11-16 11:15:39,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17848 conditions, 6075 events. 2013/6075 cut-off events. For 12757/12766 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 49232 event pairs, 571 based on Foata normal form. 28/5912 useless extension candidates. Maximal degree in co-relation 17550. Up to 2324 conditions per place. [2022-11-16 11:15:39,947 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 244 selfloop transitions, 93 changer transitions 0/436 dead transitions. [2022-11-16 11:15:39,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 436 transitions, 3404 flow [2022-11-16 11:15:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:15:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:15:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2267 transitions. [2022-11-16 11:15:39,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6648093841642229 [2022-11-16 11:15:39,952 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2267 transitions. [2022-11-16 11:15:39,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2267 transitions. [2022-11-16 11:15:39,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:39,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2267 transitions. [2022-11-16 11:15:39,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 73.12903225806451) internal successors, (2267), 31 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:39,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:39,973 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:39,973 INFO L175 Difference]: Start difference. First operand has 243 places, 208 transitions, 1399 flow. Second operand 31 states and 2267 transitions. [2022-11-16 11:15:39,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 436 transitions, 3404 flow [2022-11-16 11:15:40,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 436 transitions, 3250 flow, removed 20 selfloop flow, removed 9 redundant places. [2022-11-16 11:15:40,087 INFO L231 Difference]: Finished difference. Result has 284 places, 260 transitions, 2200 flow [2022-11-16 11:15:40,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2200, PETRI_PLACES=284, PETRI_TRANSITIONS=260} [2022-11-16 11:15:40,088 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 177 predicate places. [2022-11-16 11:15:40,089 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 260 transitions, 2200 flow [2022-11-16 11:15:40,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:40,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:40,090 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] [2022-11-16 11:15:40,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:15:40,090 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:40,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:40,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1049337056, now seen corresponding path program 3 times [2022-11-16 11:15:40,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:40,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384500650] [2022-11-16 11:15:40,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:40,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:15:41,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:41,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384500650] [2022-11-16 11:15:41,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384500650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:41,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:41,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:15:41,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516535829] [2022-11-16 11:15:41,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:41,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:15:41,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:41,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:15:41,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:15:41,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-16 11:15:41,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 260 transitions, 2200 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:41,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:41,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-16 11:15:41,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:46,005 INFO L130 PetriNetUnfolder]: 2479/7029 cut-off events. [2022-11-16 11:15:46,005 INFO L131 PetriNetUnfolder]: For 27777/27799 co-relation queries the response was YES. [2022-11-16 11:15:46,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23871 conditions, 7029 events. 2479/7029 cut-off events. For 27777/27799 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 57805 event pairs, 891 based on Foata normal form. 30/6848 useless extension candidates. Maximal degree in co-relation 23552. Up to 3155 conditions per place. [2022-11-16 11:15:46,129 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 291 selfloop transitions, 103 changer transitions 0/493 dead transitions. [2022-11-16 11:15:46,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 493 transitions, 4571 flow [2022-11-16 11:15:46,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:15:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-16 11:15:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2145 transitions. [2022-11-16 11:15:46,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2022-11-16 11:15:46,136 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2145 transitions. [2022-11-16 11:15:46,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2145 transitions. [2022-11-16 11:15:46,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:46,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2145 transitions. [2022-11-16 11:15:46,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 73.96551724137932) internal successors, (2145), 29 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:46,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:46,154 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:46,156 INFO L175 Difference]: Start difference. First operand has 284 places, 260 transitions, 2200 flow. Second operand 29 states and 2145 transitions. [2022-11-16 11:15:46,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 493 transitions, 4571 flow [2022-11-16 11:15:46,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 493 transitions, 4350 flow, removed 47 selfloop flow, removed 8 redundant places. [2022-11-16 11:15:46,344 INFO L231 Difference]: Finished difference. Result has 322 places, 307 transitions, 3066 flow [2022-11-16 11:15:46,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3066, PETRI_PLACES=322, PETRI_TRANSITIONS=307} [2022-11-16 11:15:46,345 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 215 predicate places. [2022-11-16 11:15:46,346 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 307 transitions, 3066 flow [2022-11-16 11:15:46,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:46,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:46,348 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] [2022-11-16 11:15:46,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:15:46,348 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:46,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1624451152, now seen corresponding path program 4 times [2022-11-16 11:15:46,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:46,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801465680] [2022-11-16 11:15:46,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:46,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:15:47,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:47,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801465680] [2022-11-16 11:15:47,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801465680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:47,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:47,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:15:47,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451086531] [2022-11-16 11:15:47,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:47,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:15:47,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:47,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:15:47,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:15:47,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-16 11:15:47,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 307 transitions, 3066 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:47,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:47,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-16 11:15:47,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:52,157 INFO L130 PetriNetUnfolder]: 2864/8306 cut-off events. [2022-11-16 11:15:52,158 INFO L131 PetriNetUnfolder]: For 49179/49188 co-relation queries the response was YES. [2022-11-16 11:15:52,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30442 conditions, 8306 events. 2864/8306 cut-off events. For 49179/49188 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 70741 event pairs, 766 based on Foata normal form. 28/8092 useless extension candidates. Maximal degree in co-relation 30103. Up to 3084 conditions per place. [2022-11-16 11:15:52,312 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 343 selfloop transitions, 153 changer transitions 0/595 dead transitions. [2022-11-16 11:15:52,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 595 transitions, 6391 flow [2022-11-16 11:15:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:15:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:15:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2585 transitions. [2022-11-16 11:15:52,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2022-11-16 11:15:52,321 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2585 transitions. [2022-11-16 11:15:52,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2585 transitions. [2022-11-16 11:15:52,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:52,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2585 transitions. [2022-11-16 11:15:52,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 73.85714285714286) internal successors, (2585), 35 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:52,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:52,340 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:52,341 INFO L175 Difference]: Start difference. First operand has 322 places, 307 transitions, 3066 flow. Second operand 35 states and 2585 transitions. [2022-11-16 11:15:52,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 595 transitions, 6391 flow [2022-11-16 11:15:52,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 595 transitions, 6111 flow, removed 108 selfloop flow, removed 6 redundant places. [2022-11-16 11:15:52,734 INFO L231 Difference]: Finished difference. Result has 369 places, 366 transitions, 4375 flow [2022-11-16 11:15:52,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4375, PETRI_PLACES=369, PETRI_TRANSITIONS=366} [2022-11-16 11:15:52,735 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 262 predicate places. [2022-11-16 11:15:52,736 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 366 transitions, 4375 flow [2022-11-16 11:15:52,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:52,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:52,737 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] [2022-11-16 11:15:52,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:15:52,737 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:52,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:52,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1297807034, now seen corresponding path program 1 times [2022-11-16 11:15:52,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:52,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25379618] [2022-11-16 11:15:52,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:52,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:15:53,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:53,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25379618] [2022-11-16 11:15:53,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25379618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:53,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:53,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:15:53,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164249677] [2022-11-16 11:15:53,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:53,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:15:53,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:53,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:15:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:15:53,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-16 11:15:53,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 366 transitions, 4375 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:53,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:53,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-16 11:15:53,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:58,916 INFO L130 PetriNetUnfolder]: 3238/9353 cut-off events. [2022-11-16 11:15:58,917 INFO L131 PetriNetUnfolder]: For 75199/75199 co-relation queries the response was YES. [2022-11-16 11:15:59,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36686 conditions, 9353 events. 3238/9353 cut-off events. For 75199/75199 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 83284 event pairs, 485 based on Foata normal form. 0/9083 useless extension candidates. Maximal degree in co-relation 36326. Up to 4131 conditions per place. [2022-11-16 11:15:59,106 INFO L137 encePairwiseOnDemand]: 90/110 looper letters, 428 selfloop transitions, 174 changer transitions 0/701 dead transitions. [2022-11-16 11:15:59,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 701 transitions, 9136 flow [2022-11-16 11:15:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:15:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:15:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2294 transitions. [2022-11-16 11:15:59,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2022-11-16 11:15:59,112 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2294 transitions. [2022-11-16 11:15:59,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2294 transitions. [2022-11-16 11:15:59,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:59,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2294 transitions. [2022-11-16 11:15:59,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 74.0) internal successors, (2294), 31 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:59,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:59,127 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:59,127 INFO L175 Difference]: Start difference. First operand has 369 places, 366 transitions, 4375 flow. Second operand 31 states and 2294 transitions. [2022-11-16 11:15:59,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 701 transitions, 9136 flow [2022-11-16 11:15:59,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 701 transitions, 8432 flow, removed 235 selfloop flow, removed 11 redundant places. [2022-11-16 11:15:59,991 INFO L231 Difference]: Finished difference. Result has 407 places, 419 transitions, 5348 flow [2022-11-16 11:15:59,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=5348, PETRI_PLACES=407, PETRI_TRANSITIONS=419} [2022-11-16 11:15:59,993 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 300 predicate places. [2022-11-16 11:15:59,993 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 419 transitions, 5348 flow [2022-11-16 11:15:59,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:59,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:59,994 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] [2022-11-16 11:15:59,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:15:59,994 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:15:59,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:59,995 INFO L85 PathProgramCache]: Analyzing trace with hash 827309012, now seen corresponding path program 5 times [2022-11-16 11:15:59,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:59,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739005482] [2022-11-16 11:15:59,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:59,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:16:00,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:00,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739005482] [2022-11-16 11:16:00,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739005482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:00,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:00,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:16:00,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973121612] [2022-11-16 11:16:00,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:00,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:16:00,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:00,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:16:00,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:16:00,788 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-16 11:16:00,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 419 transitions, 5348 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:00,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:00,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-16 11:16:00,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:06,624 INFO L130 PetriNetUnfolder]: 3731/10581 cut-off events. [2022-11-16 11:16:06,625 INFO L131 PetriNetUnfolder]: For 110362/110381 co-relation queries the response was YES. [2022-11-16 11:16:06,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45943 conditions, 10581 events. 3731/10581 cut-off events. For 110362/110381 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 94916 event pairs, 950 based on Foata normal form. 28/10481 useless extension candidates. Maximal degree in co-relation 45562. Up to 4657 conditions per place. [2022-11-16 11:16:06,921 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 402 selfloop transitions, 172 changer transitions 0/673 dead transitions. [2022-11-16 11:16:06,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 673 transitions, 8993 flow [2022-11-16 11:16:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:16:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-16 11:16:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2138 transitions. [2022-11-16 11:16:06,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6702194357366771 [2022-11-16 11:16:06,927 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2138 transitions. [2022-11-16 11:16:06,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2138 transitions. [2022-11-16 11:16:06,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:06,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2138 transitions. [2022-11-16 11:16:06,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 73.72413793103448) internal successors, (2138), 29 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:06,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:06,942 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:06,942 INFO L175 Difference]: Start difference. First operand has 407 places, 419 transitions, 5348 flow. Second operand 29 states and 2138 transitions. [2022-11-16 11:16:06,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 673 transitions, 8993 flow [2022-11-16 11:16:07,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 673 transitions, 8653 flow, removed 107 selfloop flow, removed 10 redundant places. [2022-11-16 11:16:07,886 INFO L231 Difference]: Finished difference. Result has 442 places, 471 transitions, 6754 flow [2022-11-16 11:16:07,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=5073, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6754, PETRI_PLACES=442, PETRI_TRANSITIONS=471} [2022-11-16 11:16:07,888 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 335 predicate places. [2022-11-16 11:16:07,888 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 471 transitions, 6754 flow [2022-11-16 11:16:07,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:07,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:07,889 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] [2022-11-16 11:16:07,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:16:07,889 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:16:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash 727232828, now seen corresponding path program 6 times [2022-11-16 11:16:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:07,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200818575] [2022-11-16 11:16:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:07,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:16:08,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:08,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200818575] [2022-11-16 11:16:08,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200818575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:08,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:08,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:16:08,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120679797] [2022-11-16 11:16:08,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:08,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:16:08,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:08,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:16:08,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:16:08,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-16 11:16:08,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 471 transitions, 6754 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:08,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:08,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-16 11:16:08,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:15,656 INFO L130 PetriNetUnfolder]: 4048/11376 cut-off events. [2022-11-16 11:16:15,656 INFO L131 PetriNetUnfolder]: For 157952/157973 co-relation queries the response was YES. [2022-11-16 11:16:15,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52993 conditions, 11376 events. 4048/11376 cut-off events. For 157952/157973 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 103134 event pairs, 964 based on Foata normal form. 30/11276 useless extension candidates. Maximal degree in co-relation 52596. Up to 4677 conditions per place. [2022-11-16 11:16:15,976 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 419 selfloop transitions, 213 changer transitions 0/731 dead transitions. [2022-11-16 11:16:15,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 731 transitions, 10532 flow [2022-11-16 11:16:15,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:16:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:16:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2561 transitions. [2022-11-16 11:16:15,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6651948051948052 [2022-11-16 11:16:15,982 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2561 transitions. [2022-11-16 11:16:15,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2561 transitions. [2022-11-16 11:16:15,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:15,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2561 transitions. [2022-11-16 11:16:15,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 73.17142857142858) internal successors, (2561), 35 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:15,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:15,998 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:15,998 INFO L175 Difference]: Start difference. First operand has 442 places, 471 transitions, 6754 flow. Second operand 35 states and 2561 transitions. [2022-11-16 11:16:15,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 731 transitions, 10532 flow [2022-11-16 11:16:17,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 731 transitions, 10036 flow, removed 242 selfloop flow, removed 4 redundant places. [2022-11-16 11:16:17,252 INFO L231 Difference]: Finished difference. Result has 482 places, 515 transitions, 7959 flow [2022-11-16 11:16:17,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=6296, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7959, PETRI_PLACES=482, PETRI_TRANSITIONS=515} [2022-11-16 11:16:17,254 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 375 predicate places. [2022-11-16 11:16:17,254 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 515 transitions, 7959 flow [2022-11-16 11:16:17,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:17,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:17,255 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] [2022-11-16 11:16:17,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:16:17,256 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:16:17,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:17,257 INFO L85 PathProgramCache]: Analyzing trace with hash 680108252, now seen corresponding path program 2 times [2022-11-16 11:16:17,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:17,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804429810] [2022-11-16 11:16:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:17,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:16:18,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:18,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804429810] [2022-11-16 11:16:18,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804429810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:18,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:18,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:16:18,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080104966] [2022-11-16 11:16:18,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:18,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:16:18,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:18,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:16:18,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:16:18,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-16 11:16:18,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 515 transitions, 7959 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:18,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:18,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-16 11:16:18,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:26,159 INFO L130 PetriNetUnfolder]: 4371/12539 cut-off events. [2022-11-16 11:16:26,159 INFO L131 PetriNetUnfolder]: For 201328/201332 co-relation queries the response was YES. [2022-11-16 11:16:26,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59735 conditions, 12539 events. 4371/12539 cut-off events. For 201328/201332 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 118761 event pairs, 609 based on Foata normal form. 36/12423 useless extension candidates. Maximal degree in co-relation 59326. Up to 5787 conditions per place. [2022-11-16 11:16:26,509 INFO L137 encePairwiseOnDemand]: 90/110 looper letters, 586 selfloop transitions, 203 changer transitions 0/888 dead transitions. [2022-11-16 11:16:26,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 888 transitions, 13927 flow [2022-11-16 11:16:26,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:16:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:16:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2612 transitions. [2022-11-16 11:16:26,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6784415584415584 [2022-11-16 11:16:26,515 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2612 transitions. [2022-11-16 11:16:26,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2612 transitions. [2022-11-16 11:16:26,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:26,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2612 transitions. [2022-11-16 11:16:26,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 74.62857142857143) internal successors, (2612), 35 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:26,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:26,531 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:26,531 INFO L175 Difference]: Start difference. First operand has 482 places, 515 transitions, 7959 flow. Second operand 35 states and 2612 transitions. [2022-11-16 11:16:26,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 888 transitions, 13927 flow [2022-11-16 11:16:27,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 888 transitions, 13329 flow, removed 284 selfloop flow, removed 5 redundant places. [2022-11-16 11:16:27,854 INFO L231 Difference]: Finished difference. Result has 520 places, 536 transitions, 8432 flow [2022-11-16 11:16:27,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=7475, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8432, PETRI_PLACES=520, PETRI_TRANSITIONS=536} [2022-11-16 11:16:27,855 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 413 predicate places. [2022-11-16 11:16:27,855 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 536 transitions, 8432 flow [2022-11-16 11:16:27,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:27,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:27,856 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] [2022-11-16 11:16:27,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:16:27,857 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:16:27,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash -191810130, now seen corresponding path program 7 times [2022-11-16 11:16:27,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:27,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435933051] [2022-11-16 11:16:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:27,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:16:28,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:28,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435933051] [2022-11-16 11:16:28,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435933051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:28,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:28,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:16:28,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916091416] [2022-11-16 11:16:28,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:28,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:16:28,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:28,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:16:28,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:16:28,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-16 11:16:28,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 536 transitions, 8432 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:28,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:28,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-16 11:16:28,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:36,894 INFO L130 PetriNetUnfolder]: 4613/13094 cut-off events. [2022-11-16 11:16:36,894 INFO L131 PetriNetUnfolder]: For 247146/247166 co-relation queries the response was YES. [2022-11-16 11:16:37,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66560 conditions, 13094 events. 4613/13094 cut-off events. For 247146/247166 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 122601 event pairs, 926 based on Foata normal form. 28/12956 useless extension candidates. Maximal degree in co-relation 66140. Up to 4677 conditions per place. [2022-11-16 11:16:37,388 INFO L137 encePairwiseOnDemand]: 92/110 looper letters, 453 selfloop transitions, 259 changer transitions 0/811 dead transitions. [2022-11-16 11:16:37,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 811 transitions, 12452 flow [2022-11-16 11:16:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:16:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:16:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2779 transitions. [2022-11-16 11:16:37,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6648325358851674 [2022-11-16 11:16:37,395 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2779 transitions. [2022-11-16 11:16:37,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2779 transitions. [2022-11-16 11:16:37,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:37,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2779 transitions. [2022-11-16 11:16:37,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 73.13157894736842) internal successors, (2779), 38 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:37,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 110.0) internal successors, (4290), 39 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:37,415 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 110.0) internal successors, (4290), 39 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:37,415 INFO L175 Difference]: Start difference. First operand has 520 places, 536 transitions, 8432 flow. Second operand 38 states and 2779 transitions. [2022-11-16 11:16:37,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 811 transitions, 12452 flow [2022-11-16 11:16:39,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 811 transitions, 11688 flow, removed 125 selfloop flow, removed 32 redundant places. [2022-11-16 11:16:39,507 INFO L231 Difference]: Finished difference. Result has 531 places, 549 transitions, 8762 flow [2022-11-16 11:16:39,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=7758, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8762, PETRI_PLACES=531, PETRI_TRANSITIONS=549} [2022-11-16 11:16:39,508 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 424 predicate places. [2022-11-16 11:16:39,509 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 549 transitions, 8762 flow [2022-11-16 11:16:39,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:39,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:39,509 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] [2022-11-16 11:16:39,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:16:39,510 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:16:39,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:39,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1004228602, now seen corresponding path program 3 times [2022-11-16 11:16:39,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:39,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496316617] [2022-11-16 11:16:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:39,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:16:40,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:40,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496316617] [2022-11-16 11:16:40,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496316617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:40,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:40,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:16:40,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545138890] [2022-11-16 11:16:40,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:40,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:16:40,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:40,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:16:40,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:16:40,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-16 11:16:40,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 549 transitions, 8762 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:40,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:40,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-16 11:16:40,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:16:49,655 INFO L130 PetriNetUnfolder]: 4963/14234 cut-off events. [2022-11-16 11:16:49,655 INFO L131 PetriNetUnfolder]: For 287243/287245 co-relation queries the response was YES. [2022-11-16 11:16:50,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73888 conditions, 14234 events. 4963/14234 cut-off events. For 287243/287245 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 138541 event pairs, 722 based on Foata normal form. 36/14073 useless extension candidates. Maximal degree in co-relation 73467. Up to 6640 conditions per place. [2022-11-16 11:16:50,177 INFO L137 encePairwiseOnDemand]: 90/110 looper letters, 636 selfloop transitions, 221 changer transitions 0/956 dead transitions. [2022-11-16 11:16:50,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 956 transitions, 16154 flow [2022-11-16 11:16:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:16:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:16:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2667 transitions. [2022-11-16 11:16:50,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6734848484848485 [2022-11-16 11:16:50,183 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2667 transitions. [2022-11-16 11:16:50,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2667 transitions. [2022-11-16 11:16:50,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:16:50,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2667 transitions. [2022-11-16 11:16:50,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 74.08333333333333) internal successors, (2667), 36 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:50,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 110.0) internal successors, (4070), 37 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:50,204 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 110.0) internal successors, (4070), 37 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:50,204 INFO L175 Difference]: Start difference. First operand has 531 places, 549 transitions, 8762 flow. Second operand 36 states and 2667 transitions. [2022-11-16 11:16:50,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 956 transitions, 16154 flow [2022-11-16 11:16:52,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 956 transitions, 15058 flow, removed 114 selfloop flow, removed 35 redundant places. [2022-11-16 11:16:52,526 INFO L231 Difference]: Finished difference. Result has 543 places, 583 transitions, 9189 flow [2022-11-16 11:16:52,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=7834, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9189, PETRI_PLACES=543, PETRI_TRANSITIONS=583} [2022-11-16 11:16:52,527 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 436 predicate places. [2022-11-16 11:16:52,528 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 583 transitions, 9189 flow [2022-11-16 11:16:52,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:52,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:16:52,529 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] [2022-11-16 11:16:52,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:16:52,529 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:16:52,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash 703071070, now seen corresponding path program 4 times [2022-11-16 11:16:52,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:52,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095089336] [2022-11-16 11:16:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:52,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:16:53,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:53,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095089336] [2022-11-16 11:16:53,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095089336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:53,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:53,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:16:53,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439648266] [2022-11-16 11:16:53,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:53,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:16:53,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:53,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:16:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:16:53,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-16 11:16:53,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 583 transitions, 9189 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:53,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:16:53,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-16 11:16:53,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand