./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/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_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/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_c0e98db4-928a-4fda-9abc-e34c0d5468bd/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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- 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 11:05:15,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:05:15,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:05:15,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:05:15,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:05:15,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:05:15,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:05:15,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:05:15,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:05:15,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:05:16,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:05:16,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:05:16,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:05:16,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:05:16,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:05:16,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:05:16,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:05:16,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:05:16,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:05:16,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:05:16,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:05:16,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:05:16,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:05:16,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:05:16,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:05:16,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:05:16,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:05:16,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:05:16,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:05:16,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:05:16,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:05:16,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:05:16,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:05:16,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:05:16,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:05:16,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:05:16,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:05:16,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:05:16,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:05:16,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:05:16,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:05:16,060 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:05:16,104 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:05:16,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:05:16,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:05:16,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:05:16,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:05:16,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:05:16,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:05:16,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:05:16,109 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:05:16,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:05:16,110 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:05:16,111 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:05:16,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:05:16,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:05:16,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:05:16,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:05:16,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:05:16,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:05:16,112 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:05:16,113 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:05:16,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:05:16,113 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:05:16,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:05:16,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:05:16,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:05:16,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:05:16,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:05:16,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:05:16,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:05:16,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:05:16,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:05:16,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:05:16,118 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:05:16,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:05:16,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:05:16,119 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_c0e98db4-928a-4fda-9abc-e34c0d5468bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2022-11-16 11:05:16,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:05:16,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:05:16,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:05:16,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:05:16,470 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:05:16,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-11-16 11:05:16,569 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/data/3c52a9f76/2f9639a8fd344680a755e7edf7ec87a6/FLAG5a779f05b [2022-11-16 11:05:17,121 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:05:17,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-11-16 11:05:17,142 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/data/3c52a9f76/2f9639a8fd344680a755e7edf7ec87a6/FLAG5a779f05b [2022-11-16 11:05:17,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/data/3c52a9f76/2f9639a8fd344680a755e7edf7ec87a6 [2022-11-16 11:05:17,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:05:17,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:05:17,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:05:17,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:05:17,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:05:17,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:05:17" (1/1) ... [2022-11-16 11:05:17,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353cccc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:17, skipping insertion in model container [2022-11-16 11:05:17,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:05:17" (1/1) ... [2022-11-16 11:05:17,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:05:17,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:05:18,068 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-11-16 11:05:18,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:05:18,148 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:05:18,210 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-11-16 11:05:18,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:05:18,297 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:05:18,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18 WrapperNode [2022-11-16 11:05:18,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:05:18,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:05:18,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:05:18,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:05:18,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (1/1) ... [2022-11-16 11:05:18,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (1/1) ... [2022-11-16 11:05:18,401 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 269 [2022-11-16 11:05:18,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:05:18,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:05:18,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:05:18,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:05:18,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (1/1) ... [2022-11-16 11:05:18,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (1/1) ... [2022-11-16 11:05:18,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (1/1) ... [2022-11-16 11:05:18,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (1/1) ... [2022-11-16 11:05:18,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (1/1) ... [2022-11-16 11:05:18,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (1/1) ... [2022-11-16 11:05:18,474 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (1/1) ... [2022-11-16 11:05:18,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (1/1) ... [2022-11-16 11:05:18,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:05:18,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:05:18,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:05:18,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:05:18,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (1/1) ... [2022-11-16 11:05:18,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:05:18,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:18,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:05:18,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:05:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:05:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:05:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:05:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:05:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:05:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:05:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:05:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:05:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:05:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:05:18,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:05:18,584 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 11:05:18,748 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:05:18,751 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:05:19,285 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:05:19,296 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:05:19,296 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-11-16 11:05:19,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:19 BoogieIcfgContainer [2022-11-16 11:05:19,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:05:19,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:05:19,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:05:19,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:05:19,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:05:17" (1/3) ... [2022-11-16 11:05:19,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c138e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:19, skipping insertion in model container [2022-11-16 11:05:19,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:18" (2/3) ... [2022-11-16 11:05:19,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c138e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:19, skipping insertion in model container [2022-11-16 11:05:19,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:19" (3/3) ... [2022-11-16 11:05:19,317 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2022-11-16 11:05:19,333 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:05:19,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:05:19,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-16 11:05:19,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:05:19,498 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:05:19,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 296 transitions, 600 flow [2022-11-16 11:05:19,739 INFO L130 PetriNetUnfolder]: 73/453 cut-off events. [2022-11-16 11:05:19,739 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:05:19,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 453 events. 73/453 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2194 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 248. Up to 8 conditions per place. [2022-11-16 11:05:19,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 296 transitions, 600 flow [2022-11-16 11:05:19,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 293 transitions, 594 flow [2022-11-16 11:05:19,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:05:19,782 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;@4d10d013, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:05:19,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-16 11:05:19,792 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-11-16 11:05:19,792 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:05:19,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:19,793 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] [2022-11-16 11:05:19,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 11:05:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:19,799 INFO L85 PathProgramCache]: Analyzing trace with hash 845188103, now seen corresponding path program 1 times [2022-11-16 11:05:19,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:19,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426125355] [2022-11-16 11:05:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:19,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,181 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 11:05:20,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:20,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426125355] [2022-11-16 11:05:20,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426125355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:20,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:20,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:20,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858881335] [2022-11-16 11:05:20,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:20,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:20,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 11:05:20,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 293 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 11:05:20,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:20,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 11:05:20,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:20,468 INFO L130 PetriNetUnfolder]: 9/389 cut-off events. [2022-11-16 11:05:20,468 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:05:20,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 389 events. 9/389 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1762 event pairs, 0 based on Foata normal form. 62/402 useless extension candidates. Maximal degree in co-relation 210. Up to 15 conditions per place. [2022-11-16 11:05:20,477 INFO L137 encePairwiseOnDemand]: 251/296 looper letters, 17 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-16 11:05:20,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 259 transitions, 568 flow [2022-11-16 11:05:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1268 transitions. [2022-11-16 11:05:20,503 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8567567567567568 [2022-11-16 11:05:20,504 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1268 transitions. [2022-11-16 11:05:20,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1268 transitions. [2022-11-16 11:05:20,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:20,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1268 transitions. [2022-11-16 11:05:20,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 253.6) internal successors, (1268), 5 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states 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 11:05:20,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 11:05:20,532 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 11:05:20,534 INFO L175 Difference]: Start difference. First operand has 252 places, 293 transitions, 594 flow. Second operand 5 states and 1268 transitions. [2022-11-16 11:05:20,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 259 transitions, 568 flow [2022-11-16 11:05:20,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 259 transitions, 568 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:05:20,546 INFO L231 Difference]: Finished difference. Result has 256 places, 255 transitions, 544 flow [2022-11-16 11:05:20,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=544, PETRI_PLACES=256, PETRI_TRANSITIONS=255} [2022-11-16 11:05:20,552 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 4 predicate places. [2022-11-16 11:05:20,552 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 255 transitions, 544 flow [2022-11-16 11:05:20,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 11:05:20,553 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:20,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:20,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:05:20,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 11:05:20,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:20,555 INFO L85 PathProgramCache]: Analyzing trace with hash -685977515, now seen corresponding path program 1 times [2022-11-16 11:05:20,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:20,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813503185] [2022-11-16 11:05:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,643 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 11:05:20,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:20,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813503185] [2022-11-16 11:05:20,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813503185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:20,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:20,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:20,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617825198] [2022-11-16 11:05:20,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:20,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:20,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:20,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:20,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:20,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 11:05:20,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 255 transitions, 544 flow. Second operand has 4 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 11:05:20,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:20,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 11:05:20,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:20,757 INFO L130 PetriNetUnfolder]: 9/388 cut-off events. [2022-11-16 11:05:20,757 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 11:05:20,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 388 events. 9/388 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1756 event pairs, 0 based on Foata normal form. 1/343 useless extension candidates. Maximal degree in co-relation 378. Up to 7 conditions per place. [2022-11-16 11:05:20,762 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 9 selfloop transitions, 8 changer transitions 0/255 dead transitions. [2022-11-16 11:05:20,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 255 transitions, 576 flow [2022-11-16 11:05:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1220 transitions. [2022-11-16 11:05:20,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8243243243243243 [2022-11-16 11:05:20,766 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1220 transitions. [2022-11-16 11:05:20,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1220 transitions. [2022-11-16 11:05:20,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:20,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1220 transitions. [2022-11-16 11:05:20,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 11:05:20,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 11:05:20,777 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 11:05:20,778 INFO L175 Difference]: Start difference. First operand has 256 places, 255 transitions, 544 flow. Second operand 5 states and 1220 transitions. [2022-11-16 11:05:20,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 255 transitions, 576 flow [2022-11-16 11:05:20,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 255 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:05:20,812 INFO L231 Difference]: Finished difference. Result has 259 places, 255 transitions, 562 flow [2022-11-16 11:05:20,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=562, PETRI_PLACES=259, PETRI_TRANSITIONS=255} [2022-11-16 11:05:20,814 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 7 predicate places. [2022-11-16 11:05:20,816 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 255 transitions, 562 flow [2022-11-16 11:05:20,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 11:05:20,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:20,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:20,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:05:20,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 11:05:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash 209534281, now seen corresponding path program 1 times [2022-11-16 11:05:20,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:20,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845872361] [2022-11-16 11:05:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:20,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:21,030 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 11:05:21,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845872361] [2022-11-16 11:05:21,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845872361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684808772] [2022-11-16 11:05:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:21,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:21,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:21,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:21,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:05:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:21,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:05:21,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:21,268 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 11:05:21,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:21,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684808772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:21,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:21,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:05:21,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879385807] [2022-11-16 11:05:21,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:21,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:21,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:21,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:05:21,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 11:05:21,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 255 transitions, 562 flow. Second operand has 5 states, 5 states have (on average 243.8) internal successors, (1219), 5 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states 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 11:05:21,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:21,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 11:05:21,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:21,411 INFO L130 PetriNetUnfolder]: 9/387 cut-off events. [2022-11-16 11:05:21,413 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-16 11:05:21,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 387 events. 9/387 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1749 event pairs, 0 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 376. Up to 10 conditions per place. [2022-11-16 11:05:21,418 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 11 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-16 11:05:21,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 254 transitions, 590 flow [2022-11-16 11:05:21,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:05:21,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 977 transitions. [2022-11-16 11:05:21,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825168918918919 [2022-11-16 11:05:21,423 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 977 transitions. [2022-11-16 11:05:21,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 977 transitions. [2022-11-16 11:05:21,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:21,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 977 transitions. [2022-11-16 11:05:21,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 11:05:21,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 11:05:21,432 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 11:05:21,432 INFO L175 Difference]: Start difference. First operand has 259 places, 255 transitions, 562 flow. Second operand 4 states and 977 transitions. [2022-11-16 11:05:21,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 254 transitions, 590 flow [2022-11-16 11:05:21,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 254 transitions, 578 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:05:21,441 INFO L231 Difference]: Finished difference. Result has 258 places, 254 transitions, 556 flow [2022-11-16 11:05:21,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=556, PETRI_PLACES=258, PETRI_TRANSITIONS=254} [2022-11-16 11:05:21,445 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 6 predicate places. [2022-11-16 11:05:21,445 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 254 transitions, 556 flow [2022-11-16 11:05:21,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.8) internal successors, (1219), 5 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states 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 11:05:21,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:21,448 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:21,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:21,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:21,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 11:05:21,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:21,655 INFO L85 PathProgramCache]: Analyzing trace with hash -212299625, now seen corresponding path program 1 times [2022-11-16 11:05:21,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:21,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844636004] [2022-11-16 11:05:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:21,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:21,760 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 11:05:21,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:21,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844636004] [2022-11-16 11:05:21,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844636004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:21,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561402415] [2022-11-16 11:05:21,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:21,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:21,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:21,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:21,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:05:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:21,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:05:21,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:21,966 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 11:05:21,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:22,018 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 11:05:22,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561402415] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:22,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:22,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:05:22,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183557737] [2022-11-16 11:05:22,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:22,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:05:22,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:22,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:05:22,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:05:22,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 11:05:22,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 254 transitions, 556 flow. Second operand has 10 states, 10 states have (on average 243.7) internal successors, (2437), 10 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states 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 11:05:22,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:22,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 11:05:22,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:22,235 INFO L130 PetriNetUnfolder]: 9/395 cut-off events. [2022-11-16 11:05:22,235 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-16 11:05:22,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 395 events. 9/395 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1736 event pairs, 0 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 366. Up to 7 conditions per place. [2022-11-16 11:05:22,240 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 18 selfloop transitions, 9 changer transitions 0/265 dead transitions. [2022-11-16 11:05:22,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 265 transitions, 648 flow [2022-11-16 11:05:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:05:22,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:05:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2198 transitions. [2022-11-16 11:05:22,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825075075075075 [2022-11-16 11:05:22,246 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2198 transitions. [2022-11-16 11:05:22,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2198 transitions. [2022-11-16 11:05:22,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:22,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2198 transitions. [2022-11-16 11:05:22,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.22222222222223) internal successors, (2198), 9 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states 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 11:05:22,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 296.0) internal successors, (2960), 10 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states 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 11:05:22,262 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 296.0) internal successors, (2960), 10 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states 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 11:05:22,263 INFO L175 Difference]: Start difference. First operand has 258 places, 254 transitions, 556 flow. Second operand 9 states and 2198 transitions. [2022-11-16 11:05:22,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 265 transitions, 648 flow [2022-11-16 11:05:22,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 265 transitions, 634 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:05:22,270 INFO L231 Difference]: Finished difference. Result has 267 places, 258 transitions, 602 flow [2022-11-16 11:05:22,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=602, PETRI_PLACES=267, PETRI_TRANSITIONS=258} [2022-11-16 11:05:22,271 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 15 predicate places. [2022-11-16 11:05:22,272 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 258 transitions, 602 flow [2022-11-16 11:05:22,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 243.7) internal successors, (2437), 10 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states 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 11:05:22,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:22,274 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, 1, 1, 1, 1] [2022-11-16 11:05:22,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:22,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:22,479 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 11:05:22,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1291795671, now seen corresponding path program 2 times [2022-11-16 11:05:22,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:22,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273177380] [2022-11-16 11:05:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:22,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:22,561 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 11:05:22,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:22,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273177380] [2022-11-16 11:05:22,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273177380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:22,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:22,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:22,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671703247] [2022-11-16 11:05:22,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:22,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:22,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:22,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:22,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:22,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 11:05:22,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 258 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states 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 11:05:22,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:22,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 11:05:22,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:22,662 INFO L130 PetriNetUnfolder]: 6/267 cut-off events. [2022-11-16 11:05:22,663 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-16 11:05:22,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 267 events. 6/267 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 811 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 250. Up to 7 conditions per place. [2022-11-16 11:05:22,667 INFO L137 encePairwiseOnDemand]: 289/296 looper letters, 10 selfloop transitions, 4 changer transitions 0/258 dead transitions. [2022-11-16 11:05:22,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 258 transitions, 630 flow [2022-11-16 11:05:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1222 transitions. [2022-11-16 11:05:22,671 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8256756756756757 [2022-11-16 11:05:22,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1222 transitions. [2022-11-16 11:05:22,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1222 transitions. [2022-11-16 11:05:22,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:22,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1222 transitions. [2022-11-16 11:05:22,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.4) internal successors, (1222), 5 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states 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 11:05:22,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 11:05:22,681 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 11:05:22,681 INFO L175 Difference]: Start difference. First operand has 267 places, 258 transitions, 602 flow. Second operand 5 states and 1222 transitions. [2022-11-16 11:05:22,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 258 transitions, 630 flow [2022-11-16 11:05:22,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 258 transitions, 614 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 11:05:22,689 INFO L231 Difference]: Finished difference. Result has 266 places, 256 transitions, 594 flow [2022-11-16 11:05:22,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=594, PETRI_PLACES=266, PETRI_TRANSITIONS=256} [2022-11-16 11:05:22,690 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 14 predicate places. [2022-11-16 11:05:22,691 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 256 transitions, 594 flow [2022-11-16 11:05:22,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states 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 11:05:22,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:22,692 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:22,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:05:22,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 11:05:22,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:22,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1301276799, now seen corresponding path program 1 times [2022-11-16 11:05:22,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:22,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004019949] [2022-11-16 11:05:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:22,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:05:22,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:22,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004019949] [2022-11-16 11:05:22,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004019949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:22,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478608733] [2022-11-16 11:05:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:22,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:22,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:22,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:22,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:05:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:23,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:05:23,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:05:23,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:05:23,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478608733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:23,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:23,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:05:23,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372027601] [2022-11-16 11:05:23,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:23,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:05:23,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:23,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:05:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:05:23,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 11:05:23,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 256 transitions, 594 flow. Second operand has 18 states, 18 states have (on average 244.05555555555554) internal successors, (4393), 18 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states 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 11:05:23,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:23,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 11:05:23,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:23,632 INFO L130 PetriNetUnfolder]: 6/295 cut-off events. [2022-11-16 11:05:23,632 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-16 11:05:23,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 295 events. 6/295 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 812 event pairs, 0 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 243. Up to 9 conditions per place. [2022-11-16 11:05:23,636 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 34 selfloop transitions, 21 changer transitions 0/291 dead transitions. [2022-11-16 11:05:23,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 291 transitions, 858 flow [2022-11-16 11:05:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:05:23,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:05:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5120 transitions. [2022-11-16 11:05:23,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8236808236808236 [2022-11-16 11:05:23,648 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5120 transitions. [2022-11-16 11:05:23,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5120 transitions. [2022-11-16 11:05:23,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:23,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5120 transitions. [2022-11-16 11:05:23,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 243.8095238095238) internal successors, (5120), 21 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states 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 11:05:23,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 296.0) internal successors, (6512), 22 states have internal predecessors, (6512), 0 states have call successors, (0), 0 states 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 11:05:23,679 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 296.0) internal successors, (6512), 22 states have internal predecessors, (6512), 0 states have call successors, (0), 0 states 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 11:05:23,679 INFO L175 Difference]: Start difference. First operand has 266 places, 256 transitions, 594 flow. Second operand 21 states and 5120 transitions. [2022-11-16 11:05:23,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 291 transitions, 858 flow [2022-11-16 11:05:23,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 291 transitions, 850 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:05:23,686 INFO L231 Difference]: Finished difference. Result has 287 places, 269 transitions, 742 flow [2022-11-16 11:05:23,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=742, PETRI_PLACES=287, PETRI_TRANSITIONS=269} [2022-11-16 11:05:23,688 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 35 predicate places. [2022-11-16 11:05:23,688 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 269 transitions, 742 flow [2022-11-16 11:05:23,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 244.05555555555554) internal successors, (4393), 18 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states 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 11:05:23,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:23,691 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:23,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:05:23,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:05:23,896 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 11:05:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash -792104705, now seen corresponding path program 2 times [2022-11-16 11:05:23,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:23,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531731558] [2022-11-16 11:05:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:23,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:05:24,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:24,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531731558] [2022-11-16 11:05:24,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531731558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:24,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760829121] [2022-11-16 11:05:24,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:05:24,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:24,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:24,309 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:24,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:05:24,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:05:24,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:24,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:05:24,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:05:24,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:05:24,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760829121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:24,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:24,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 11:05:24,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019740410] [2022-11-16 11:05:24,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:24,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:05:24,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:24,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:05:24,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:05:24,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 296 [2022-11-16 11:05:24,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 269 transitions, 742 flow. Second operand has 23 states, 23 states have (on average 244.30434782608697) internal successors, (5619), 23 states have internal predecessors, (5619), 0 states have call successors, (0), 0 states 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 11:05:24,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:24,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 296 [2022-11-16 11:05:24,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:25,409 INFO L130 PetriNetUnfolder]: 6/316 cut-off events. [2022-11-16 11:05:25,410 INFO L131 PetriNetUnfolder]: For 224/224 co-relation queries the response was YES. [2022-11-16 11:05:25,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 316 events. 6/316 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 813 event pairs, 0 based on Foata normal form. 3/293 useless extension candidates. Maximal degree in co-relation 334. Up to 12 conditions per place. [2022-11-16 11:05:25,414 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 46 selfloop transitions, 30 changer transitions 0/312 dead transitions. [2022-11-16 11:05:25,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 312 transitions, 1104 flow [2022-11-16 11:05:25,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:05:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:05:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7309 transitions. [2022-11-16 11:05:25,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8230855855855855 [2022-11-16 11:05:25,428 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7309 transitions. [2022-11-16 11:05:25,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7309 transitions. [2022-11-16 11:05:25,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:25,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7309 transitions. [2022-11-16 11:05:25,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 243.63333333333333) internal successors, (7309), 30 states have internal predecessors, (7309), 0 states have call successors, (0), 0 states 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 11:05:25,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 296.0) internal successors, (9176), 31 states have internal predecessors, (9176), 0 states have call successors, (0), 0 states 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 11:05:25,469 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 296.0) internal successors, (9176), 31 states have internal predecessors, (9176), 0 states have call successors, (0), 0 states 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 11:05:25,469 INFO L175 Difference]: Start difference. First operand has 287 places, 269 transitions, 742 flow. Second operand 30 states and 7309 transitions. [2022-11-16 11:05:25,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 312 transitions, 1104 flow [2022-11-16 11:05:25,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 312 transitions, 1024 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 11:05:25,483 INFO L231 Difference]: Finished difference. Result has 312 places, 279 transitions, 840 flow [2022-11-16 11:05:25,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=840, PETRI_PLACES=312, PETRI_TRANSITIONS=279} [2022-11-16 11:05:25,484 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 60 predicate places. [2022-11-16 11:05:25,485 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 279 transitions, 840 flow [2022-11-16 11:05:25,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 244.30434782608697) internal successors, (5619), 23 states have internal predecessors, (5619), 0 states have call successors, (0), 0 states 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 11:05:25,487 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:25,487 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:25,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:25,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:05:25,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 11:05:25,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:25,693 INFO L85 PathProgramCache]: Analyzing trace with hash -62847603, now seen corresponding path program 3 times [2022-11-16 11:05:25,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:25,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024278086] [2022-11-16 11:05:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:25,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:05:25,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:05:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:05:25,798 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:05:25,799 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:05:25,800 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-16 11:05:25,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-11-16 11:05:25,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-11-16 11:05:25,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-11-16 11:05:25,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-11-16 11:05:25,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-11-16 11:05:25,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-11-16 11:05:25,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-11-16 11:05:25,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-11-16 11:05:25,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-11-16 11:05:25,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-11-16 11:05:25,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-11-16 11:05:25,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-11-16 11:05:25,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-11-16 11:05:25,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-11-16 11:05:25,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-11-16 11:05:25,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-11-16 11:05:25,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-11-16 11:05:25,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-11-16 11:05:25,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-11-16 11:05:25,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-11-16 11:05:25,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-11-16 11:05:25,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-11-16 11:05:25,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-11-16 11:05:25,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-11-16 11:05:25,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-11-16 11:05:25,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-11-16 11:05:25,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-11-16 11:05:25,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-11-16 11:05:25,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:05:25,816 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2022-11-16 11:05:25,819 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:05:25,819 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:05:25,874 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:05:25,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 380 transitions, 778 flow [2022-11-16 11:05:26,022 INFO L130 PetriNetUnfolder]: 118/731 cut-off events. [2022-11-16 11:05:26,022 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:05:26,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 731 events. 118/731 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3938 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 455. Up to 12 conditions per place. [2022-11-16 11:05:26,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 380 transitions, 778 flow [2022-11-16 11:05:26,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 380 transitions, 778 flow [2022-11-16 11:05:26,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:05:26,049 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;@4d10d013, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:05:26,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-16 11:05:26,053 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-11-16 11:05:26,053 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:05:26,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:26,054 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] [2022-11-16 11:05:26,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:26,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:26,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1913492483, now seen corresponding path program 1 times [2022-11-16 11:05:26,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:26,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457920775] [2022-11-16 11:05:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:26,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,121 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 11:05:26,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:26,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457920775] [2022-11-16 11:05:26,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457920775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:26,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:26,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:26,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387277783] [2022-11-16 11:05:26,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:26,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:26,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:26,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:26,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:26,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 11:05:26,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 380 transitions, 778 flow. Second operand has 4 states, 4 states have (on average 311.5) internal successors, (1246), 4 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 11:05:26,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:26,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 11:05:26,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:26,304 INFO L130 PetriNetUnfolder]: 17/629 cut-off events. [2022-11-16 11:05:26,305 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-16 11:05:26,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 629 events. 17/629 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3350 event pairs, 0 based on Foata normal form. 126/672 useless extension candidates. Maximal degree in co-relation 415. Up to 19 conditions per place. [2022-11-16 11:05:26,317 INFO L137 encePairwiseOnDemand]: 323/380 looper letters, 19 selfloop transitions, 4 changer transitions 0/333 dead transitions. [2022-11-16 11:05:26,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 333 transitions, 730 flow [2022-11-16 11:05:26,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1627 transitions. [2022-11-16 11:05:26,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8563157894736843 [2022-11-16 11:05:26,322 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1627 transitions. [2022-11-16 11:05:26,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1627 transitions. [2022-11-16 11:05:26,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:26,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1627 transitions. [2022-11-16 11:05:26,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.4) internal successors, (1627), 5 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 11:05:26,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 11:05:26,332 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 11:05:26,333 INFO L175 Difference]: Start difference. First operand has 325 places, 380 transitions, 778 flow. Second operand 5 states and 1627 transitions. [2022-11-16 11:05:26,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 333 transitions, 730 flow [2022-11-16 11:05:26,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 333 transitions, 730 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:05:26,339 INFO L231 Difference]: Finished difference. Result has 328 places, 329 transitions, 702 flow [2022-11-16 11:05:26,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=702, PETRI_PLACES=328, PETRI_TRANSITIONS=329} [2022-11-16 11:05:26,343 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 3 predicate places. [2022-11-16 11:05:26,343 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 329 transitions, 702 flow [2022-11-16 11:05:26,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.5) internal successors, (1246), 4 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 11:05:26,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:26,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:26,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:05:26,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:26,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1736378411, now seen corresponding path program 1 times [2022-11-16 11:05:26,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:26,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147613743] [2022-11-16 11:05:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:26,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,391 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 11:05:26,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:26,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147613743] [2022-11-16 11:05:26,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147613743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:26,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:26,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:26,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770327069] [2022-11-16 11:05:26,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:26,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:26,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:26,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:26,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:26,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 11:05:26,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 329 transitions, 702 flow. Second operand has 4 states, 4 states have (on average 313.25) internal successors, (1253), 4 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:26,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:26,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 11:05:26,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:26,558 INFO L130 PetriNetUnfolder]: 17/628 cut-off events. [2022-11-16 11:05:26,558 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-16 11:05:26,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 628 events. 17/628 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3351 event pairs, 0 based on Foata normal form. 1/549 useless extension candidates. Maximal degree in co-relation 629. Up to 11 conditions per place. [2022-11-16 11:05:26,572 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 11 selfloop transitions, 8 changer transitions 0/329 dead transitions. [2022-11-16 11:05:26,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 329 transitions, 738 flow [2022-11-16 11:05:26,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1567 transitions. [2022-11-16 11:05:26,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8247368421052632 [2022-11-16 11:05:26,577 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1567 transitions. [2022-11-16 11:05:26,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1567 transitions. [2022-11-16 11:05:26,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:26,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1567 transitions. [2022-11-16 11:05:26,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.4) internal successors, (1567), 5 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states 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 11:05:26,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 11:05:26,587 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 11:05:26,587 INFO L175 Difference]: Start difference. First operand has 328 places, 329 transitions, 702 flow. Second operand 5 states and 1567 transitions. [2022-11-16 11:05:26,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 329 transitions, 738 flow [2022-11-16 11:05:26,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 329 transitions, 736 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:05:26,594 INFO L231 Difference]: Finished difference. Result has 331 places, 329 transitions, 720 flow [2022-11-16 11:05:26,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=720, PETRI_PLACES=331, PETRI_TRANSITIONS=329} [2022-11-16 11:05:26,595 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 6 predicate places. [2022-11-16 11:05:26,596 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 329 transitions, 720 flow [2022-11-16 11:05:26,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.25) internal successors, (1253), 4 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:26,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:26,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:26,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:05:26,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:26,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2006845253, now seen corresponding path program 1 times [2022-11-16 11:05:26,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:26,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423354425] [2022-11-16 11:05:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:26,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,665 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 11:05:26,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:26,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423354425] [2022-11-16 11:05:26,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423354425] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:26,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577258795] [2022-11-16 11:05:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:26,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:26,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:26,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:26,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:05:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:05:26,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:26,809 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 11:05:26,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:26,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577258795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:26,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:26,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:05:26,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967597063] [2022-11-16 11:05:26,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:26,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:26,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:26,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:26,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:05:26,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 11:05:26,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 329 transitions, 720 flow. Second operand has 5 states, 5 states have (on average 312.8) internal successors, (1564), 5 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states 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 11:05:26,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:26,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 11:05:26,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:26,985 INFO L130 PetriNetUnfolder]: 17/627 cut-off events. [2022-11-16 11:05:26,985 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-16 11:05:26,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 627 events. 17/627 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3337 event pairs, 0 based on Foata normal form. 1/548 useless extension candidates. Maximal degree in co-relation 627. Up to 14 conditions per place. [2022-11-16 11:05:26,995 INFO L137 encePairwiseOnDemand]: 376/380 looper letters, 13 selfloop transitions, 5 changer transitions 0/328 dead transitions. [2022-11-16 11:05:26,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 328 transitions, 752 flow [2022-11-16 11:05:26,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:05:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1255 transitions. [2022-11-16 11:05:26,999 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8256578947368421 [2022-11-16 11:05:26,999 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1255 transitions. [2022-11-16 11:05:26,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1255 transitions. [2022-11-16 11:05:27,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:27,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1255 transitions. [2022-11-16 11:05:27,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 11:05:27,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 11:05:27,007 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 11:05:27,007 INFO L175 Difference]: Start difference. First operand has 331 places, 329 transitions, 720 flow. Second operand 4 states and 1255 transitions. [2022-11-16 11:05:27,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 328 transitions, 752 flow [2022-11-16 11:05:27,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 328 transitions, 740 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:05:27,014 INFO L231 Difference]: Finished difference. Result has 330 places, 328 transitions, 714 flow [2022-11-16 11:05:27,015 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=714, PETRI_PLACES=330, PETRI_TRANSITIONS=328} [2022-11-16 11:05:27,015 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 5 predicate places. [2022-11-16 11:05:27,015 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 328 transitions, 714 flow [2022-11-16 11:05:27,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 312.8) internal successors, (1564), 5 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states 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 11:05:27,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:27,016 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:27,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:27,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:27,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:27,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1200530405, now seen corresponding path program 1 times [2022-11-16 11:05:27,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:27,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124703745] [2022-11-16 11:05:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:27,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,292 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 11:05:27,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:27,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124703745] [2022-11-16 11:05:27,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124703745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:27,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863877631] [2022-11-16 11:05:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:27,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:27,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:27,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:27,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:05:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:05:27,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:27,422 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 11:05:27,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:27,457 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 11:05:27,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863877631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:27,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:27,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:05:27,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403138426] [2022-11-16 11:05:27,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:27,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:05:27,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:27,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:05:27,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:05:27,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 11:05:27,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 328 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 312.7) internal successors, (3127), 10 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states 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 11:05:27,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:27,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 11:05:27,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:27,675 INFO L130 PetriNetUnfolder]: 17/635 cut-off events. [2022-11-16 11:05:27,675 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-11-16 11:05:27,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 635 events. 17/635 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3323 event pairs, 0 based on Foata normal form. 2/557 useless extension candidates. Maximal degree in co-relation 617. Up to 11 conditions per place. [2022-11-16 11:05:27,707 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 20 selfloop transitions, 9 changer transitions 0/339 dead transitions. [2022-11-16 11:05:27,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 339 transitions, 810 flow [2022-11-16 11:05:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:05:27,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:05:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2821 transitions. [2022-11-16 11:05:27,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8248538011695906 [2022-11-16 11:05:27,715 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2821 transitions. [2022-11-16 11:05:27,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2821 transitions. [2022-11-16 11:05:27,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:27,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2821 transitions. [2022-11-16 11:05:27,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 313.44444444444446) internal successors, (2821), 9 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states 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 11:05:27,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 380.0) internal successors, (3800), 10 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states 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 11:05:27,732 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 380.0) internal successors, (3800), 10 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states 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 11:05:27,733 INFO L175 Difference]: Start difference. First operand has 330 places, 328 transitions, 714 flow. Second operand 9 states and 2821 transitions. [2022-11-16 11:05:27,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 339 transitions, 810 flow [2022-11-16 11:05:27,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 339 transitions, 796 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:05:27,739 INFO L231 Difference]: Finished difference. Result has 339 places, 332 transitions, 760 flow [2022-11-16 11:05:27,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=760, PETRI_PLACES=339, PETRI_TRANSITIONS=332} [2022-11-16 11:05:27,741 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 14 predicate places. [2022-11-16 11:05:27,741 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 332 transitions, 760 flow [2022-11-16 11:05:27,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 312.7) internal successors, (3127), 10 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states 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 11:05:27,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:27,743 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, 1, 1, 1, 1] [2022-11-16 11:05:27,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:27,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:27,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:27,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:27,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1612147803, now seen corresponding path program 2 times [2022-11-16 11:05:27,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:27,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351303819] [2022-11-16 11:05:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:27,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:28,014 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 11:05:28,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:28,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351303819] [2022-11-16 11:05:28,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351303819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:28,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:28,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:28,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255021992] [2022-11-16 11:05:28,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:28,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:28,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:28,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:28,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:28,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 11:05:28,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 332 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 11:05:28,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:28,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 11:05:28,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:28,174 INFO L130 PetriNetUnfolder]: 13/516 cut-off events. [2022-11-16 11:05:28,175 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-16 11:05:28,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 516 events. 13/516 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2446 event pairs, 0 based on Foata normal form. 0/454 useless extension candidates. Maximal degree in co-relation 520. Up to 21 conditions per place. [2022-11-16 11:05:28,187 INFO L137 encePairwiseOnDemand]: 373/380 looper letters, 19 selfloop transitions, 4 changer transitions 0/339 dead transitions. [2022-11-16 11:05:28,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 339 transitions, 820 flow [2022-11-16 11:05:28,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1576 transitions. [2022-11-16 11:05:28,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8294736842105264 [2022-11-16 11:05:28,195 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1576 transitions. [2022-11-16 11:05:28,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1576 transitions. [2022-11-16 11:05:28,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:28,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1576 transitions. [2022-11-16 11:05:28,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 315.2) internal successors, (1576), 5 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 11:05:28,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 11:05:28,204 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 11:05:28,205 INFO L175 Difference]: Start difference. First operand has 339 places, 332 transitions, 760 flow. Second operand 5 states and 1576 transitions. [2022-11-16 11:05:28,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 339 transitions, 820 flow [2022-11-16 11:05:28,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 339 transitions, 804 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 11:05:28,212 INFO L231 Difference]: Finished difference. Result has 342 places, 335 transitions, 776 flow [2022-11-16 11:05:28,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=776, PETRI_PLACES=342, PETRI_TRANSITIONS=335} [2022-11-16 11:05:28,214 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 17 predicate places. [2022-11-16 11:05:28,215 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 335 transitions, 776 flow [2022-11-16 11:05:28,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 11:05:28,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:28,216 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:28,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:05:28,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:28,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:28,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1725951910, now seen corresponding path program 1 times [2022-11-16 11:05:28,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:28,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888162251] [2022-11-16 11:05:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:28,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 11:05:28,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:28,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888162251] [2022-11-16 11:05:28,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888162251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:28,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:28,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:28,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050334309] [2022-11-16 11:05:28,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:28,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:28,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:28,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:28,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:28,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 11:05:28,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 335 transitions, 776 flow. Second operand has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 11:05:28,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:28,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 11:05:28,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:28,478 INFO L130 PetriNetUnfolder]: 13/515 cut-off events. [2022-11-16 11:05:28,478 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-16 11:05:28,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 515 events. 13/515 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2447 event pairs, 0 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 527. Up to 10 conditions per place. [2022-11-16 11:05:28,491 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 11 selfloop transitions, 8 changer transitions 0/335 dead transitions. [2022-11-16 11:05:28,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 335 transitions, 812 flow [2022-11-16 11:05:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:28,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1567 transitions. [2022-11-16 11:05:28,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8247368421052632 [2022-11-16 11:05:28,495 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1567 transitions. [2022-11-16 11:05:28,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1567 transitions. [2022-11-16 11:05:28,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:28,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1567 transitions. [2022-11-16 11:05:28,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.4) internal successors, (1567), 5 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states 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 11:05:28,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 11:05:28,503 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 11:05:28,504 INFO L175 Difference]: Start difference. First operand has 342 places, 335 transitions, 776 flow. Second operand 5 states and 1567 transitions. [2022-11-16 11:05:28,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 335 transitions, 812 flow [2022-11-16 11:05:28,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 335 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:05:28,511 INFO L231 Difference]: Finished difference. Result has 345 places, 335 transitions, 794 flow [2022-11-16 11:05:28,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=794, PETRI_PLACES=345, PETRI_TRANSITIONS=335} [2022-11-16 11:05:28,514 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 20 predicate places. [2022-11-16 11:05:28,514 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 335 transitions, 794 flow [2022-11-16 11:05:28,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 11:05:28,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:28,515 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:28,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:05:28,516 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:28,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:28,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1964902600, now seen corresponding path program 1 times [2022-11-16 11:05:28,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:28,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347066386] [2022-11-16 11:05:28,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:28,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:28,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347066386] [2022-11-16 11:05:28,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347066386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:28,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030332937] [2022-11-16 11:05:28,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:28,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:28,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:28,671 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:28,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:05:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:28,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:05:28,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:28,835 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:28,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:28,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030332937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:28,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:28,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:05:28,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938286823] [2022-11-16 11:05:28,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:28,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:05:28,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:28,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:05:28,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:05:28,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 11:05:28,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 335 transitions, 794 flow. Second operand has 18 states, 18 states have (on average 313.1111111111111) internal successors, (5636), 18 states have internal predecessors, (5636), 0 states have call successors, (0), 0 states 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 11:05:28,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:28,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 11:05:28,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:29,351 INFO L130 PetriNetUnfolder]: 13/543 cut-off events. [2022-11-16 11:05:29,351 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-11-16 11:05:29,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 543 events. 13/543 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2440 event pairs, 0 based on Foata normal form. 4/489 useless extension candidates. Maximal degree in co-relation 521. Up to 11 conditions per place. [2022-11-16 11:05:29,362 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 36 selfloop transitions, 21 changer transitions 0/370 dead transitions. [2022-11-16 11:05:29,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 370 transitions, 1062 flow [2022-11-16 11:05:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:05:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:05:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6571 transitions. [2022-11-16 11:05:29,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8234335839598997 [2022-11-16 11:05:29,371 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6571 transitions. [2022-11-16 11:05:29,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6571 transitions. [2022-11-16 11:05:29,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:29,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6571 transitions. [2022-11-16 11:05:29,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 312.9047619047619) internal successors, (6571), 21 states have internal predecessors, (6571), 0 states have call successors, (0), 0 states 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 11:05:29,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 380.0) internal successors, (8360), 22 states have internal predecessors, (8360), 0 states have call successors, (0), 0 states 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 11:05:29,399 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 380.0) internal successors, (8360), 22 states have internal predecessors, (8360), 0 states have call successors, (0), 0 states 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 11:05:29,400 INFO L175 Difference]: Start difference. First operand has 345 places, 335 transitions, 794 flow. Second operand 21 states and 6571 transitions. [2022-11-16 11:05:29,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 370 transitions, 1062 flow [2022-11-16 11:05:29,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 370 transitions, 1050 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:05:29,408 INFO L231 Difference]: Finished difference. Result has 367 places, 348 transitions, 938 flow [2022-11-16 11:05:29,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=938, PETRI_PLACES=367, PETRI_TRANSITIONS=348} [2022-11-16 11:05:29,409 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 42 predicate places. [2022-11-16 11:05:29,409 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 348 transitions, 938 flow [2022-11-16 11:05:29,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 313.1111111111111) internal successors, (5636), 18 states have internal predecessors, (5636), 0 states have call successors, (0), 0 states 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 11:05:29,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:29,412 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:29,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 11:05:29,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:05:29,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:29,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:29,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1743582904, now seen corresponding path program 2 times [2022-11-16 11:05:29,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:29,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683679771] [2022-11-16 11:05:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:29,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:29,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:29,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683679771] [2022-11-16 11:05:29,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683679771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:29,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336411144] [2022-11-16 11:05:29,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:05:29,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:29,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:29,996 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:29,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:05:30,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:05:30,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:30,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:05:30,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:30,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:30,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336411144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:30,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:30,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 11:05:30,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410907312] [2022-11-16 11:05:30,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:30,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:05:30,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:30,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:05:30,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:05:30,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 11:05:30,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 348 transitions, 938 flow. Second operand has 23 states, 23 states have (on average 313.3478260869565) internal successors, (7207), 23 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states 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 11:05:30,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:30,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 11:05:30,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:31,068 INFO L130 PetriNetUnfolder]: 13/564 cut-off events. [2022-11-16 11:05:31,069 INFO L131 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2022-11-16 11:05:31,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 564 events. 13/564 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2440 event pairs, 0 based on Foata normal form. 3/509 useless extension candidates. Maximal degree in co-relation 575. Up to 12 conditions per place. [2022-11-16 11:05:31,081 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 48 selfloop transitions, 30 changer transitions 0/391 dead transitions. [2022-11-16 11:05:31,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 391 transitions, 1304 flow [2022-11-16 11:05:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:05:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:05:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9381 transitions. [2022-11-16 11:05:31,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8228947368421052 [2022-11-16 11:05:31,094 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9381 transitions. [2022-11-16 11:05:31,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9381 transitions. [2022-11-16 11:05:31,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:31,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9381 transitions. [2022-11-16 11:05:31,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 312.7) internal successors, (9381), 30 states have internal predecessors, (9381), 0 states have call successors, (0), 0 states 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 11:05:31,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 380.0) internal successors, (11780), 31 states have internal predecessors, (11780), 0 states have call successors, (0), 0 states 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 11:05:31,174 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 380.0) internal successors, (11780), 31 states have internal predecessors, (11780), 0 states have call successors, (0), 0 states 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 11:05:31,175 INFO L175 Difference]: Start difference. First operand has 367 places, 348 transitions, 938 flow. Second operand 30 states and 9381 transitions. [2022-11-16 11:05:31,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 391 transitions, 1304 flow [2022-11-16 11:05:31,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 391 transitions, 1224 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 11:05:31,184 INFO L231 Difference]: Finished difference. Result has 392 places, 358 transitions, 1036 flow [2022-11-16 11:05:31,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1036, PETRI_PLACES=392, PETRI_TRANSITIONS=358} [2022-11-16 11:05:31,186 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 67 predicate places. [2022-11-16 11:05:31,186 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 358 transitions, 1036 flow [2022-11-16 11:05:31,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 313.3478260869565) internal successors, (7207), 23 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states 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 11:05:31,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:31,189 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:31,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:31,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:05:31,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1305508618, now seen corresponding path program 3 times [2022-11-16 11:05:31,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:31,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993302816] [2022-11-16 11:05:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:31,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:05:31,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:31,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993302816] [2022-11-16 11:05:31,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993302816] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:31,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515554067] [2022-11-16 11:05:31,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:05:31,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:31,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:31,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:31,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:05:31,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 11:05:31,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:31,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:05:31,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:05:31,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:31,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515554067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:31,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:31,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:05:31,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931577506] [2022-11-16 11:05:31,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:31,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:31,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:31,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:31,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:05:31,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 380 [2022-11-16 11:05:31,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 358 transitions, 1036 flow. Second operand has 5 states, 5 states have (on average 313.2) internal successors, (1566), 5 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states 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 11:05:31,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:31,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 380 [2022-11-16 11:05:31,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:31,886 INFO L130 PetriNetUnfolder]: 13/563 cut-off events. [2022-11-16 11:05:31,886 INFO L131 PetriNetUnfolder]: For 204/204 co-relation queries the response was YES. [2022-11-16 11:05:31,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 563 events. 13/563 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2437 event pairs, 0 based on Foata normal form. 1/506 useless extension candidates. Maximal degree in co-relation 536. Up to 17 conditions per place. [2022-11-16 11:05:31,900 INFO L137 encePairwiseOnDemand]: 376/380 looper letters, 13 selfloop transitions, 5 changer transitions 0/357 dead transitions. [2022-11-16 11:05:31,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 357 transitions, 1068 flow [2022-11-16 11:05:31,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:31,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:05:31,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1255 transitions. [2022-11-16 11:05:31,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8256578947368421 [2022-11-16 11:05:31,903 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1255 transitions. [2022-11-16 11:05:31,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1255 transitions. [2022-11-16 11:05:31,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:31,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1255 transitions. [2022-11-16 11:05:31,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 11:05:31,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 11:05:31,911 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 11:05:31,911 INFO L175 Difference]: Start difference. First operand has 392 places, 358 transitions, 1036 flow. Second operand 4 states and 1255 transitions. [2022-11-16 11:05:31,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 357 transitions, 1068 flow [2022-11-16 11:05:31,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 357 transitions, 1022 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 11:05:31,921 INFO L231 Difference]: Finished difference. Result has 376 places, 357 transitions, 996 flow [2022-11-16 11:05:31,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=996, PETRI_PLACES=376, PETRI_TRANSITIONS=357} [2022-11-16 11:05:31,923 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 51 predicate places. [2022-11-16 11:05:31,923 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 357 transitions, 996 flow [2022-11-16 11:05:31,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 313.2) internal successors, (1566), 5 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states 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 11:05:31,924 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:31,924 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, 1, 1, 1, 1] [2022-11-16 11:05:31,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:32,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:05:32,130 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:32,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:32,131 INFO L85 PathProgramCache]: Analyzing trace with hash -630712475, now seen corresponding path program 1 times [2022-11-16 11:05:32,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:32,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973989704] [2022-11-16 11:05:32,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:32,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:32,670 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 11:05:32,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:32,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973989704] [2022-11-16 11:05:32,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973989704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:32,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:32,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:05:32,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039919961] [2022-11-16 11:05:32,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:32,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:05:32,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:05:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:05:32,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 380 [2022-11-16 11:05:32,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 357 transitions, 996 flow. Second operand has 11 states, 11 states have (on average 267.3636363636364) internal successors, (2941), 11 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states 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 11:05:32,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:32,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 380 [2022-11-16 11:05:32,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:43,203 INFO L130 PetriNetUnfolder]: 12171/46062 cut-off events. [2022-11-16 11:05:43,203 INFO L131 PetriNetUnfolder]: For 782/793 co-relation queries the response was YES. [2022-11-16 11:05:43,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64256 conditions, 46062 events. 12171/46062 cut-off events. For 782/793 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 645557 event pairs, 2111 based on Foata normal form. 1/40203 useless extension candidates. Maximal degree in co-relation 63989. Up to 9013 conditions per place. [2022-11-16 11:05:43,841 INFO L137 encePairwiseOnDemand]: 360/380 looper letters, 342 selfloop transitions, 71 changer transitions 0/709 dead transitions. [2022-11-16 11:05:43,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 709 transitions, 2607 flow [2022-11-16 11:05:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:05:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:05:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6785 transitions. [2022-11-16 11:05:43,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7439692982456141 [2022-11-16 11:05:43,852 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6785 transitions. [2022-11-16 11:05:43,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6785 transitions. [2022-11-16 11:05:43,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:43,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6785 transitions. [2022-11-16 11:05:43,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 282.7083333333333) internal successors, (6785), 24 states have internal predecessors, (6785), 0 states have call successors, (0), 0 states 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 11:05:43,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 380.0) internal successors, (9500), 25 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states 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 11:05:43,879 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 380.0) internal successors, (9500), 25 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states 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 11:05:43,880 INFO L175 Difference]: Start difference. First operand has 376 places, 357 transitions, 996 flow. Second operand 24 states and 6785 transitions. [2022-11-16 11:05:43,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 709 transitions, 2607 flow [2022-11-16 11:05:43,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 709 transitions, 2597 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:05:43,901 INFO L231 Difference]: Finished difference. Result has 414 places, 443 transitions, 1554 flow [2022-11-16 11:05:43,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1554, PETRI_PLACES=414, PETRI_TRANSITIONS=443} [2022-11-16 11:05:43,902 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 89 predicate places. [2022-11-16 11:05:43,902 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 443 transitions, 1554 flow [2022-11-16 11:05:43,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 267.3636363636364) internal successors, (2941), 11 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states 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 11:05:43,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:43,904 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, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:43,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:05:43,905 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash -954203115, now seen corresponding path program 1 times [2022-11-16 11:05:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:43,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023908862] [2022-11-16 11:05:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:05:44,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:44,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023908862] [2022-11-16 11:05:44,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023908862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:44,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95647404] [2022-11-16 11:05:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:44,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:44,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:44,181 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:44,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:05:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:44,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:05:44,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-16 11:05:44,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:44,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95647404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:44,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:44,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 11:05:44,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074948575] [2022-11-16 11:05:44,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:44,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:44,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:44,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:44,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:44,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 380 [2022-11-16 11:05:44,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 443 transitions, 1554 flow. Second operand has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states 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 11:05:44,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:44,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 380 [2022-11-16 11:05:44,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:46,163 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1318] t_funEXIT-->L958-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem58#1_7| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of2ForFork0_thidvar0_4) InVars {t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} OutVars{t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} AuxVars[] AssignedVars[][383], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, t_funThread1of2ForFork0NotInUse, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), t_funThread2of2ForFork0NotInUse, Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), 2299#true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 132#L958-5true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 11:05:46,163 INFO L383 tUnfolder$Statistics]: this new event has 225 ancestors and is cut-off event [2022-11-16 11:05:46,163 INFO L386 tUnfolder$Statistics]: existing Event has 213 ancestors and is cut-off event [2022-11-16 11:05:46,164 INFO L386 tUnfolder$Statistics]: existing Event has 183 ancestors and is cut-off event [2022-11-16 11:05:46,164 INFO L386 tUnfolder$Statistics]: existing Event has 213 ancestors and is cut-off event [2022-11-16 11:05:46,457 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1318] t_funEXIT-->L958-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem58#1_7| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of2ForFork0_thidvar0_4) InVars {t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} OutVars{t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} AuxVars[] AssignedVars[][383], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, t_funThread1of2ForFork0NotInUse, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), 20#t_funENTRYtrue, Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), t_funThread2of2ForFork0InUse, Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), 2299#true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 132#L958-5true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 11:05:46,457 INFO L383 tUnfolder$Statistics]: this new event has 237 ancestors and is cut-off event [2022-11-16 11:05:46,457 INFO L386 tUnfolder$Statistics]: existing Event has 195 ancestors and is cut-off event [2022-11-16 11:05:46,458 INFO L386 tUnfolder$Statistics]: existing Event has 225 ancestors and is cut-off event [2022-11-16 11:05:46,458 INFO L386 tUnfolder$Statistics]: existing Event has 225 ancestors and is cut-off event [2022-11-16 11:05:46,856 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1319] t_funEXIT-->L958-5: Formula: (= v_t_funThread2of2ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem58#1_9| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_9|, t_funThread2of2ForFork0_thidvar0=v_t_funThread2of2ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_9|, t_funThread2of2ForFork0_thidvar0=v_t_funThread2of2ForFork0_thidvar0_4} AuxVars[] AssignedVars[][416], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, t_funThread1of2ForFork0NotInUse, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), t_funThread2of2ForFork0NotInUse, Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), 2299#true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 132#L958-5true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 11:05:46,857 INFO L383 tUnfolder$Statistics]: this new event has 252 ancestors and is cut-off event [2022-11-16 11:05:46,857 INFO L386 tUnfolder$Statistics]: existing Event has 240 ancestors and is cut-off event [2022-11-16 11:05:46,857 INFO L386 tUnfolder$Statistics]: existing Event has 210 ancestors and is cut-off event [2022-11-16 11:05:46,857 INFO L386 tUnfolder$Statistics]: existing Event has 270 ancestors and is cut-off event [2022-11-16 11:05:46,880 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1319] t_funEXIT-->L958-5: Formula: (= v_t_funThread2of2ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem58#1_9| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_9|, t_funThread2of2ForFork0_thidvar0=v_t_funThread2of2ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_9|, t_funThread2of2ForFork0_thidvar0=v_t_funThread2of2ForFork0_thidvar0_4} AuxVars[] AssignedVars[][416], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), t_funThread1of2ForFork0InUse, t_funThread2of2ForFork0NotInUse, Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), 2299#true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 132#L958-5true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 97#L941-6true, Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 11:05:46,880 INFO L383 tUnfolder$Statistics]: this new event has 254 ancestors and is cut-off event [2022-11-16 11:05:46,880 INFO L386 tUnfolder$Statistics]: existing Event has 242 ancestors and is cut-off event [2022-11-16 11:05:46,881 INFO L386 tUnfolder$Statistics]: existing Event has 212 ancestors and is cut-off event [2022-11-16 11:05:46,881 INFO L386 tUnfolder$Statistics]: existing Event has 254 ancestors and is cut-off event [2022-11-16 11:05:46,921 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1318] t_funEXIT-->L958-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem58#1_7| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of2ForFork0_thidvar0_4) InVars {t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} OutVars{t_funThread1of2ForFork0_thidvar0=v_t_funThread1of2ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem58#1=|v_ULTIMATE.start_main_#t~mem58#1_7|} AuxVars[] AssignedVars[][383], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, t_funThread1of2ForFork0NotInUse, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), t_funThread2of2ForFork0InUse, Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), 2299#true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 232#L941-10true, 132#L958-5true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 11:05:46,921 INFO L383 tUnfolder$Statistics]: this new event has 258 ancestors and is cut-off event [2022-11-16 11:05:46,921 INFO L386 tUnfolder$Statistics]: existing Event has 216 ancestors and is cut-off event [2022-11-16 11:05:46,921 INFO L386 tUnfolder$Statistics]: existing Event has 246 ancestors and is cut-off event [2022-11-16 11:05:46,921 INFO L386 tUnfolder$Statistics]: existing Event has 246 ancestors and is cut-off event [2022-11-16 11:05:46,983 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1160] L946-4-->L946-5: Formula: (and (= |v_t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.offset_1| (+ (* |v_t_funThread1of2ForFork0_~i~0#1_9| 28) |v_~#cache~0.offset_11|)) (= |v_t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base_1| |v_~#cache~0.base_12|)) InVars {~#cache~0.offset=|v_~#cache~0.offset_11|, ~#cache~0.base=|v_~#cache~0.base_12|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_9|} OutVars{~#cache~0.offset=|v_~#cache~0.offset_11|, ~#cache~0.base=|v_~#cache~0.base_12|, t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base=|v_t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base_1|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_9|, t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.offset=|v_t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.offset_1|} AuxVars[] AssignedVars[t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.offset, t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base][201], [Black: 764#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1069#(< |ULTIMATE.start_main_~i~1#1| 9), 338#true, 1218#true, Black: 1234#(<= |ULTIMATE.start_main_~i~1#1| 7), t_funThread1of2ForFork0InUse, Black: 1623#(< |ULTIMATE.start_main_~i~1#1| 9), t_funThread2of2ForFork0InUse, Black: 1606#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), 2234#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1)), 2299#true, 181#L946-5true, 280#L959true, Black: 466#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 634#(< |ULTIMATE.start_main_~i~1#1| 10), 232#L941-10true, 756#true, 462#true, Black: 739#(= |ULTIMATE.start_main_~i~3#1| 0), Black: 2247#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 740#(= 0 |ULTIMATE.start_main_#t~post43#1|), Black: 2257#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 742#(and (= 0 |ULTIMATE.start_main_#t~post43#1|) (= |ULTIMATE.start_main_~i~3#1| 0)), Black: 2273#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2251#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), 747#true, Black: 2243#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2265#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2249#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= (select (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2235#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2245#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2259#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2271#(and (= 3 |~#cache~0.base|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2263#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|)), Black: 2269#(and (= 3 |~#cache~0.base|) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2279#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2255#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|)) (= |t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 0)), Black: 2253#(and (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= 0 |t_funThread1of2ForFork0_cache_entry_addref_#t~mem34#1|) (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#cache~0.base|)) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 2261#(and (= ((as const (Array Int Int)) 0) (select |#memory_int| |t_funThread1of2ForFork0_cache_entry_addref_#in~entry#1.base|)) (= 3 |~#cache~0.base|) (= (select |#valid| 3) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| |~#cache~0.base|))), Black: 1092#(< |ULTIMATE.start_main_~i~1#1| 8), Black: 1052#(< |ULTIMATE.start_main_~i~1#1| 10)]) [2022-11-16 11:05:46,983 INFO L383 tUnfolder$Statistics]: this new event has 247 ancestors and is cut-off event [2022-11-16 11:05:46,983 INFO L386 tUnfolder$Statistics]: existing Event has 247 ancestors and is cut-off event [2022-11-16 11:05:46,983 INFO L386 tUnfolder$Statistics]: existing Event has 205 ancestors and is cut-off event [2022-11-16 11:05:46,983 INFO L386 tUnfolder$Statistics]: existing Event has 235 ancestors and is cut-off event [2022-11-16 11:05:47,021 INFO L130 PetriNetUnfolder]: 671/7942 cut-off events. [2022-11-16 11:05:47,021 INFO L131 PetriNetUnfolder]: For 3660/3837 co-relation queries the response was YES. [2022-11-16 11:05:47,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10841 conditions, 7942 events. 671/7942 cut-off events. For 3660/3837 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 88552 event pairs, 89 based on Foata normal form. 16/6896 useless extension candidates. Maximal degree in co-relation 10639. Up to 257 conditions per place. [2022-11-16 11:05:47,160 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 14 selfloop transitions, 2 changer transitions 0/447 dead transitions. [2022-11-16 11:05:47,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 447 transitions, 1594 flow [2022-11-16 11:05:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:05:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 959 transitions. [2022-11-16 11:05:47,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8412280701754385 [2022-11-16 11:05:47,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 959 transitions. [2022-11-16 11:05:47,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 959 transitions. [2022-11-16 11:05:47,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:47,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 959 transitions. [2022-11-16 11:05:47,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:47,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 11:05:47,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 11:05:47,167 INFO L175 Difference]: Start difference. First operand has 414 places, 443 transitions, 1554 flow. Second operand 3 states and 959 transitions. [2022-11-16 11:05:47,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 447 transitions, 1594 flow [2022-11-16 11:05:47,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 447 transitions, 1593 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:05:47,211 INFO L231 Difference]: Finished difference. Result has 416 places, 444 transitions, 1565 flow [2022-11-16 11:05:47,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1565, PETRI_PLACES=416, PETRI_TRANSITIONS=444} [2022-11-16 11:05:47,212 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 91 predicate places. [2022-11-16 11:05:47,212 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 444 transitions, 1565 flow [2022-11-16 11:05:47,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states 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 11:05:47,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:47,213 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:47,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:47,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:47,419 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-16 11:05:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:47,419 INFO L85 PathProgramCache]: Analyzing trace with hash 805498546, now seen corresponding path program 1 times [2022-11-16 11:05:47,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:47,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814353928] [2022-11-16 11:05:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:47,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:05:47,454 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:05:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:05:47,498 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:05:47,499 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:05:47,499 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2022-11-16 11:05:47,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 35 remaining) [2022-11-16 11:05:47,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 35 remaining) [2022-11-16 11:05:47,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 35 remaining) [2022-11-16 11:05:47,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 35 remaining) [2022-11-16 11:05:47,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 35 remaining) [2022-11-16 11:05:47,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 35 remaining) [2022-11-16 11:05:47,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 35 remaining) [2022-11-16 11:05:47,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 35 remaining) [2022-11-16 11:05:47,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 35 remaining) [2022-11-16 11:05:47,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 35 remaining) [2022-11-16 11:05:47,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 35 remaining) [2022-11-16 11:05:47,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 35 remaining) [2022-11-16 11:05:47,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 35 remaining) [2022-11-16 11:05:47,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 35 remaining) [2022-11-16 11:05:47,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 35 remaining) [2022-11-16 11:05:47,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 35 remaining) [2022-11-16 11:05:47,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 35 remaining) [2022-11-16 11:05:47,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 35 remaining) [2022-11-16 11:05:47,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 35 remaining) [2022-11-16 11:05:47,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 35 remaining) [2022-11-16 11:05:47,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 35 remaining) [2022-11-16 11:05:47,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 35 remaining) [2022-11-16 11:05:47,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 35 remaining) [2022-11-16 11:05:47,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 35 remaining) [2022-11-16 11:05:47,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 35 remaining) [2022-11-16 11:05:47,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 35 remaining) [2022-11-16 11:05:47,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 35 remaining) [2022-11-16 11:05:47,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 35 remaining) [2022-11-16 11:05:47,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 35 remaining) [2022-11-16 11:05:47,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 35 remaining) [2022-11-16 11:05:47,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 35 remaining) [2022-11-16 11:05:47,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 35 remaining) [2022-11-16 11:05:47,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 35 remaining) [2022-11-16 11:05:47,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 35 remaining) [2022-11-16 11:05:47,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:05:47,508 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:47,509 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:05:47,509 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:05:47,566 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:05:47,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 396 places, 464 transitions, 958 flow [2022-11-16 11:05:47,732 INFO L130 PetriNetUnfolder]: 168/1050 cut-off events. [2022-11-16 11:05:47,732 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 11:05:47,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 1050 events. 168/1050 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5992 event pairs, 1 based on Foata normal form. 0/798 useless extension candidates. Maximal degree in co-relation 739. Up to 16 conditions per place. [2022-11-16 11:05:47,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 396 places, 464 transitions, 958 flow [2022-11-16 11:05:47,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 396 places, 464 transitions, 958 flow [2022-11-16 11:05:47,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:05:47,761 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;@4d10d013, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:05:47,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-16 11:05:47,763 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-11-16 11:05:47,764 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:05:47,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:47,764 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] [2022-11-16 11:05:47,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:05:47,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:47,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1409541075, now seen corresponding path program 1 times [2022-11-16 11:05:47,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:47,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321873632] [2022-11-16 11:05:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:47,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,794 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 11:05:47,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:47,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321873632] [2022-11-16 11:05:47,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321873632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:47,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:47,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:47,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561021956] [2022-11-16 11:05:47,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:47,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:47,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:47,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:47,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:47,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 11:05:47,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 464 transitions, 958 flow. Second operand has 4 states, 4 states have (on average 380.5) internal successors, (1522), 4 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states 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 11:05:47,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:47,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 11:05:47,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:48,030 INFO L130 PetriNetUnfolder]: 27/905 cut-off events. [2022-11-16 11:05:48,031 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-16 11:05:48,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 905 events. 27/905 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5230 event pairs, 1 based on Foata normal form. 258/1041 useless extension candidates. Maximal degree in co-relation 662. Up to 28 conditions per place. [2022-11-16 11:05:48,054 INFO L137 encePairwiseOnDemand]: 395/464 looper letters, 21 selfloop transitions, 4 changer transitions 0/404 dead transitions. [2022-11-16 11:05:48,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 404 transitions, 888 flow [2022-11-16 11:05:48,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:48,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:48,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1986 transitions. [2022-11-16 11:05:48,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8560344827586207 [2022-11-16 11:05:48,058 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1986 transitions. [2022-11-16 11:05:48,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1986 transitions. [2022-11-16 11:05:48,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:48,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1986 transitions. [2022-11-16 11:05:48,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 397.2) internal successors, (1986), 5 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states 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 11:05:48,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 11:05:48,066 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 11:05:48,067 INFO L175 Difference]: Start difference. First operand has 396 places, 464 transitions, 958 flow. Second operand 5 states and 1986 transitions. [2022-11-16 11:05:48,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 404 transitions, 888 flow [2022-11-16 11:05:48,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 404 transitions, 888 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:05:48,075 INFO L231 Difference]: Finished difference. Result has 398 places, 400 transitions, 856 flow [2022-11-16 11:05:48,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=856, PETRI_PLACES=398, PETRI_TRANSITIONS=400} [2022-11-16 11:05:48,076 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 2 predicate places. [2022-11-16 11:05:48,076 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 400 transitions, 856 flow [2022-11-16 11:05:48,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 380.5) internal successors, (1522), 4 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states 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 11:05:48,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:48,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:48,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:05:48,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:05:48,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:48,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1391406635, now seen corresponding path program 1 times [2022-11-16 11:05:48,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:48,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680195390] [2022-11-16 11:05:48,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:48,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:48,275 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 11:05:48,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:48,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680195390] [2022-11-16 11:05:48,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680195390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:48,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:48,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:48,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632209307] [2022-11-16 11:05:48,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:48,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:48,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:48,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 11:05:48,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 400 transitions, 856 flow. Second operand has 4 states, 4 states have (on average 382.25) internal successors, (1529), 4 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 11:05:48,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:48,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 11:05:48,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:48,502 INFO L130 PetriNetUnfolder]: 27/904 cut-off events. [2022-11-16 11:05:48,503 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-16 11:05:48,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 904 events. 27/904 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5225 event pairs, 1 based on Foata normal form. 1/786 useless extension candidates. Maximal degree in co-relation 927. Up to 20 conditions per place. [2022-11-16 11:05:48,527 INFO L137 encePairwiseOnDemand]: 458/464 looper letters, 13 selfloop transitions, 8 changer transitions 0/400 dead transitions. [2022-11-16 11:05:48,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 400 transitions, 896 flow [2022-11-16 11:05:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1914 transitions. [2022-11-16 11:05:48,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825 [2022-11-16 11:05:48,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1914 transitions. [2022-11-16 11:05:48,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1914 transitions. [2022-11-16 11:05:48,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:48,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1914 transitions. [2022-11-16 11:05:48,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 382.8) internal successors, (1914), 5 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 11:05:48,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 11:05:48,541 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 11:05:48,541 INFO L175 Difference]: Start difference. First operand has 398 places, 400 transitions, 856 flow. Second operand 5 states and 1914 transitions. [2022-11-16 11:05:48,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 400 transitions, 896 flow [2022-11-16 11:05:48,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 400 transitions, 894 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:05:48,551 INFO L231 Difference]: Finished difference. Result has 401 places, 400 transitions, 874 flow [2022-11-16 11:05:48,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=874, PETRI_PLACES=401, PETRI_TRANSITIONS=400} [2022-11-16 11:05:48,552 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 5 predicate places. [2022-11-16 11:05:48,553 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 400 transitions, 874 flow [2022-11-16 11:05:48,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 382.25) internal successors, (1529), 4 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 11:05:48,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:48,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:48,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:05:48,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:05:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:48,555 INFO L85 PathProgramCache]: Analyzing trace with hash -183931115, now seen corresponding path program 1 times [2022-11-16 11:05:48,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:48,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934831152] [2022-11-16 11:05:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:48,615 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 11:05:48,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:48,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934831152] [2022-11-16 11:05:48,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934831152] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:48,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159786192] [2022-11-16 11:05:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:48,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:48,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:48,618 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:48,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:05:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:48,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:05:48,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:48,774 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 11:05:48,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:48,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159786192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:48,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:48,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:05:48,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925320867] [2022-11-16 11:05:48,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:48,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:48,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:48,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:48,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:05:48,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 11:05:48,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 400 transitions, 874 flow. Second operand has 5 states, 5 states have (on average 381.8) internal successors, (1909), 5 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states 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 11:05:48,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:48,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 11:05:48,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:49,010 INFO L130 PetriNetUnfolder]: 27/903 cut-off events. [2022-11-16 11:05:49,010 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-11-16 11:05:49,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 903 events. 27/903 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5217 event pairs, 1 based on Foata normal form. 1/785 useless extension candidates. Maximal degree in co-relation 925. Up to 23 conditions per place. [2022-11-16 11:05:49,033 INFO L137 encePairwiseOnDemand]: 460/464 looper letters, 15 selfloop transitions, 5 changer transitions 0/399 dead transitions. [2022-11-16 11:05:49,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 399 transitions, 910 flow [2022-11-16 11:05:49,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:05:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1533 transitions. [2022-11-16 11:05:49,036 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8259698275862069 [2022-11-16 11:05:49,036 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1533 transitions. [2022-11-16 11:05:49,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1533 transitions. [2022-11-16 11:05:49,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:49,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1533 transitions. [2022-11-16 11:05:49,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 383.25) internal successors, (1533), 4 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states 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 11:05:49,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 11:05:49,042 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 11:05:49,043 INFO L175 Difference]: Start difference. First operand has 401 places, 400 transitions, 874 flow. Second operand 4 states and 1533 transitions. [2022-11-16 11:05:49,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 399 transitions, 910 flow [2022-11-16 11:05:49,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 399 transitions, 898 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:05:49,050 INFO L231 Difference]: Finished difference. Result has 400 places, 399 transitions, 868 flow [2022-11-16 11:05:49,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=868, PETRI_PLACES=400, PETRI_TRANSITIONS=399} [2022-11-16 11:05:49,051 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 4 predicate places. [2022-11-16 11:05:49,052 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 399 transitions, 868 flow [2022-11-16 11:05:49,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 381.8) internal successors, (1909), 5 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states 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 11:05:49,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:49,053 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:49,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:49,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 11:05:49,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:05:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:49,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1973769465, now seen corresponding path program 1 times [2022-11-16 11:05:49,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:49,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237016868] [2022-11-16 11:05:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:49,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:49,317 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 11:05:49,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:49,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237016868] [2022-11-16 11:05:49,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237016868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:49,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698266244] [2022-11-16 11:05:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:49,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:49,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:49,320 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:49,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:05:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:49,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:05:49,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:49,462 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 11:05:49,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:49,499 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 11:05:49,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698266244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:49,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:49,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:05:49,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152055827] [2022-11-16 11:05:49,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:49,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:05:49,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:49,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:05:49,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:05:49,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 11:05:49,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 399 transitions, 868 flow. Second operand has 10 states, 10 states have (on average 381.7) internal successors, (3817), 10 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states 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 11:05:49,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:49,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 11:05:49,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:49,794 INFO L130 PetriNetUnfolder]: 27/911 cut-off events. [2022-11-16 11:05:49,794 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-16 11:05:49,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 911 events. 27/911 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5197 event pairs, 1 based on Foata normal form. 2/794 useless extension candidates. Maximal degree in co-relation 915. Up to 20 conditions per place. [2022-11-16 11:05:49,817 INFO L137 encePairwiseOnDemand]: 458/464 looper letters, 22 selfloop transitions, 9 changer transitions 0/410 dead transitions. [2022-11-16 11:05:49,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 410 transitions, 968 flow [2022-11-16 11:05:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:05:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:05:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3444 transitions. [2022-11-16 11:05:49,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8247126436781609 [2022-11-16 11:05:49,823 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3444 transitions. [2022-11-16 11:05:49,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3444 transitions. [2022-11-16 11:05:49,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:49,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3444 transitions. [2022-11-16 11:05:49,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 382.6666666666667) internal successors, (3444), 9 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states 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 11:05:49,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 464.0) internal successors, (4640), 10 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states 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 11:05:49,848 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 464.0) internal successors, (4640), 10 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states 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 11:05:49,848 INFO L175 Difference]: Start difference. First operand has 400 places, 399 transitions, 868 flow. Second operand 9 states and 3444 transitions. [2022-11-16 11:05:49,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 410 transitions, 968 flow [2022-11-16 11:05:49,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 410 transitions, 954 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:05:49,856 INFO L231 Difference]: Finished difference. Result has 409 places, 403 transitions, 914 flow [2022-11-16 11:05:49,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=914, PETRI_PLACES=409, PETRI_TRANSITIONS=403} [2022-11-16 11:05:49,857 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 13 predicate places. [2022-11-16 11:05:49,858 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 403 transitions, 914 flow [2022-11-16 11:05:49,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 381.7) internal successors, (3817), 10 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states 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 11:05:49,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:49,859 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, 1, 1, 1, 1] [2022-11-16 11:05:49,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:50,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 11:05:50,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:05:50,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:50,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2104083655, now seen corresponding path program 2 times [2022-11-16 11:05:50,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:50,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248807761] [2022-11-16 11:05:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:50,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:50,123 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 11:05:50,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:50,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248807761] [2022-11-16 11:05:50,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248807761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:50,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:50,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:50,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496277395] [2022-11-16 11:05:50,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:50,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:50,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:50,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:50,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:50,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 11:05:50,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 403 transitions, 914 flow. Second operand has 4 states, 4 states have (on average 380.75) internal successors, (1523), 4 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states 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 11:05:50,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:50,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 11:05:50,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:50,430 INFO L130 PetriNetUnfolder]: 23/792 cut-off events. [2022-11-16 11:05:50,430 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-11-16 11:05:50,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 792 events. 23/792 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4336 event pairs, 1 based on Foata normal form. 0/691 useless extension candidates. Maximal degree in co-relation 828. Up to 40 conditions per place. [2022-11-16 11:05:50,452 INFO L137 encePairwiseOnDemand]: 457/464 looper letters, 21 selfloop transitions, 4 changer transitions 0/410 dead transitions. [2022-11-16 11:05:50,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 410 transitions, 978 flow [2022-11-16 11:05:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:50,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1923 transitions. [2022-11-16 11:05:50,456 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8288793103448275 [2022-11-16 11:05:50,456 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1923 transitions. [2022-11-16 11:05:50,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1923 transitions. [2022-11-16 11:05:50,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:50,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1923 transitions. [2022-11-16 11:05:50,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 384.6) internal successors, (1923), 5 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states 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 11:05:50,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 11:05:50,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 11:05:50,464 INFO L175 Difference]: Start difference. First operand has 409 places, 403 transitions, 914 flow. Second operand 5 states and 1923 transitions. [2022-11-16 11:05:50,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 410 transitions, 978 flow [2022-11-16 11:05:50,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 410 transitions, 962 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 11:05:50,474 INFO L231 Difference]: Finished difference. Result has 412 places, 406 transitions, 930 flow [2022-11-16 11:05:50,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=930, PETRI_PLACES=412, PETRI_TRANSITIONS=406} [2022-11-16 11:05:50,476 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 16 predicate places. [2022-11-16 11:05:50,476 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 406 transitions, 930 flow [2022-11-16 11:05:50,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 380.75) internal successors, (1523), 4 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states 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 11:05:50,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:50,477 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:50,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:05:50,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:05:50,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2118770970, now seen corresponding path program 1 times [2022-11-16 11:05:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:50,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946347868] [2022-11-16 11:05:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:50,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 11:05:50,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:50,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946347868] [2022-11-16 11:05:50,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946347868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:50,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:50,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:50,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92569615] [2022-11-16 11:05:50,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:50,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:50,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:50,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:50,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:50,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 11:05:50,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 406 transitions, 930 flow. Second operand has 4 states, 4 states have (on average 382.75) internal successors, (1531), 4 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:50,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:50,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 11:05:50,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:50,781 INFO L130 PetriNetUnfolder]: 23/790 cut-off events. [2022-11-16 11:05:50,781 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-11-16 11:05:50,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 790 events. 23/790 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4306 event pairs, 1 based on Foata normal form. 2/698 useless extension candidates. Maximal degree in co-relation 838. Up to 20 conditions per place. [2022-11-16 11:05:50,804 INFO L137 encePairwiseOnDemand]: 458/464 looper letters, 13 selfloop transitions, 8 changer transitions 0/406 dead transitions. [2022-11-16 11:05:50,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 406 transitions, 970 flow [2022-11-16 11:05:50,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1914 transitions. [2022-11-16 11:05:50,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825 [2022-11-16 11:05:50,808 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1914 transitions. [2022-11-16 11:05:50,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1914 transitions. [2022-11-16 11:05:50,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:50,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1914 transitions. [2022-11-16 11:05:50,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 382.8) internal successors, (1914), 5 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 11:05:50,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 11:05:50,814 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 464.0) internal successors, (2784), 6 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 11:05:50,815 INFO L175 Difference]: Start difference. First operand has 412 places, 406 transitions, 930 flow. Second operand 5 states and 1914 transitions. [2022-11-16 11:05:50,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 406 transitions, 970 flow [2022-11-16 11:05:50,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 406 transitions, 968 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:05:50,823 INFO L231 Difference]: Finished difference. Result has 415 places, 406 transitions, 948 flow [2022-11-16 11:05:50,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=948, PETRI_PLACES=415, PETRI_TRANSITIONS=406} [2022-11-16 11:05:50,825 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 19 predicate places. [2022-11-16 11:05:50,825 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 406 transitions, 948 flow [2022-11-16 11:05:50,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 382.75) internal successors, (1531), 4 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:50,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:50,826 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:05:50,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:05:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1257392036, now seen corresponding path program 1 times [2022-11-16 11:05:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:50,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582406127] [2022-11-16 11:05:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:50,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582406127] [2022-11-16 11:05:50,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582406127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55222541] [2022-11-16 11:05:50,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:50,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:50,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:50,993 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:51,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:05:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:51,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:05:51,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:51,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:51,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55222541] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:51,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:51,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:05:51,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574164862] [2022-11-16 11:05:51,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:51,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:05:51,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:51,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:05:51,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:05:51,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 11:05:51,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 406 transitions, 948 flow. Second operand has 18 states, 18 states have (on average 382.1111111111111) internal successors, (6878), 18 states have internal predecessors, (6878), 0 states have call successors, (0), 0 states 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 11:05:51,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:51,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 11:05:51,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:51,743 INFO L130 PetriNetUnfolder]: 23/818 cut-off events. [2022-11-16 11:05:51,743 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-16 11:05:51,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 818 events. 23/818 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4307 event pairs, 1 based on Foata normal form. 4/728 useless extension candidates. Maximal degree in co-relation 828. Up to 20 conditions per place. [2022-11-16 11:05:51,765 INFO L137 encePairwiseOnDemand]: 458/464 looper letters, 38 selfloop transitions, 21 changer transitions 0/441 dead transitions. [2022-11-16 11:05:51,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 441 transitions, 1220 flow [2022-11-16 11:05:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:05:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:05:51,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8022 transitions. [2022-11-16 11:05:51,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8232758620689655 [2022-11-16 11:05:51,776 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8022 transitions. [2022-11-16 11:05:51,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8022 transitions. [2022-11-16 11:05:51,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:51,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8022 transitions. [2022-11-16 11:05:51,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 382.0) internal successors, (8022), 21 states have internal predecessors, (8022), 0 states have call successors, (0), 0 states 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 11:05:51,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 464.0) internal successors, (10208), 22 states have internal predecessors, (10208), 0 states have call successors, (0), 0 states 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 11:05:51,799 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 464.0) internal successors, (10208), 22 states have internal predecessors, (10208), 0 states have call successors, (0), 0 states 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 11:05:51,799 INFO L175 Difference]: Start difference. First operand has 415 places, 406 transitions, 948 flow. Second operand 21 states and 8022 transitions. [2022-11-16 11:05:51,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 441 transitions, 1220 flow [2022-11-16 11:05:51,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 441 transitions, 1208 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:05:51,811 INFO L231 Difference]: Finished difference. Result has 437 places, 419 transitions, 1092 flow [2022-11-16 11:05:51,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1092, PETRI_PLACES=437, PETRI_TRANSITIONS=419} [2022-11-16 11:05:51,813 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 41 predicate places. [2022-11-16 11:05:51,813 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 419 transitions, 1092 flow [2022-11-16 11:05:51,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 382.1111111111111) internal successors, (6878), 18 states have internal predecessors, (6878), 0 states have call successors, (0), 0 states 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 11:05:51,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:51,815 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:51,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:52,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:52,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:05:52,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:52,026 INFO L85 PathProgramCache]: Analyzing trace with hash -454429660, now seen corresponding path program 2 times [2022-11-16 11:05:52,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:52,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828130724] [2022-11-16 11:05:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:52,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:52,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:52,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828130724] [2022-11-16 11:05:52,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828130724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:52,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066374379] [2022-11-16 11:05:52,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:05:52,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:52,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:52,467 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:52,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:05:52,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:05:52,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:52,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:05:52,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:52,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:05:52,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066374379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:52,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:52,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 11:05:52,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21200563] [2022-11-16 11:05:52,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:05:52,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:52,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:05:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:05:53,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 11:05:53,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 419 transitions, 1092 flow. Second operand has 23 states, 23 states have (on average 382.3478260869565) internal successors, (8794), 23 states have internal predecessors, (8794), 0 states have call successors, (0), 0 states 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 11:05:53,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:53,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 11:05:53,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:53,749 INFO L130 PetriNetUnfolder]: 23/839 cut-off events. [2022-11-16 11:05:53,749 INFO L131 PetriNetUnfolder]: For 274/274 co-relation queries the response was YES. [2022-11-16 11:05:53,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 839 events. 23/839 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4307 event pairs, 1 based on Foata normal form. 3/748 useless extension candidates. Maximal degree in co-relation 828. Up to 20 conditions per place. [2022-11-16 11:05:53,768 INFO L137 encePairwiseOnDemand]: 458/464 looper letters, 50 selfloop transitions, 30 changer transitions 0/462 dead transitions. [2022-11-16 11:05:53,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 462 transitions, 1462 flow [2022-11-16 11:05:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:05:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:05:53,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 11453 transitions. [2022-11-16 11:05:53,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8227729885057471 [2022-11-16 11:05:53,790 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 11453 transitions. [2022-11-16 11:05:53,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 11453 transitions. [2022-11-16 11:05:53,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:53,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 11453 transitions. [2022-11-16 11:05:53,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 381.76666666666665) internal successors, (11453), 30 states have internal predecessors, (11453), 0 states have call successors, (0), 0 states 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 11:05:53,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 464.0) internal successors, (14384), 31 states have internal predecessors, (14384), 0 states have call successors, (0), 0 states 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 11:05:53,842 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 464.0) internal successors, (14384), 31 states have internal predecessors, (14384), 0 states have call successors, (0), 0 states 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 11:05:53,843 INFO L175 Difference]: Start difference. First operand has 437 places, 419 transitions, 1092 flow. Second operand 30 states and 11453 transitions. [2022-11-16 11:05:53,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 462 transitions, 1462 flow [2022-11-16 11:05:53,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 462 transitions, 1382 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 11:05:53,858 INFO L231 Difference]: Finished difference. Result has 462 places, 429 transitions, 1190 flow [2022-11-16 11:05:53,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1190, PETRI_PLACES=462, PETRI_TRANSITIONS=429} [2022-11-16 11:05:53,860 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 66 predicate places. [2022-11-16 11:05:53,860 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 429 transitions, 1190 flow [2022-11-16 11:05:53,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 382.3478260869565) internal successors, (8794), 23 states have internal predecessors, (8794), 0 states have call successors, (0), 0 states 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 11:05:53,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:53,863 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:53,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:54,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 11:05:54,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:05:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2122892894, now seen corresponding path program 3 times [2022-11-16 11:05:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:54,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454058753] [2022-11-16 11:05:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:54,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:05:54,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:54,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454058753] [2022-11-16 11:05:54,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454058753] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:54,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820219946] [2022-11-16 11:05:54,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:05:54,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:54,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:54,241 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:54,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:05:54,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 11:05:54,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:54,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:05:54,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:05:54,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:54,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820219946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:54,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:54,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:05:54,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358353353] [2022-11-16 11:05:54,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:54,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:05:54,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:54,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:05:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:05:54,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 464 [2022-11-16 11:05:54,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 429 transitions, 1190 flow. Second operand has 5 states, 5 states have (on average 382.2) internal successors, (1911), 5 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states 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 11:05:54,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:54,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 464 [2022-11-16 11:05:54,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:54,904 INFO L130 PetriNetUnfolder]: 23/837 cut-off events. [2022-11-16 11:05:54,904 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2022-11-16 11:05:54,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 837 events. 23/837 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4303 event pairs, 1 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 846. Up to 30 conditions per place. [2022-11-16 11:05:54,935 INFO L137 encePairwiseOnDemand]: 460/464 looper letters, 15 selfloop transitions, 5 changer transitions 0/428 dead transitions. [2022-11-16 11:05:54,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 428 transitions, 1226 flow [2022-11-16 11:05:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:05:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:05:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1533 transitions. [2022-11-16 11:05:54,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8259698275862069 [2022-11-16 11:05:54,940 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1533 transitions. [2022-11-16 11:05:54,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1533 transitions. [2022-11-16 11:05:54,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:54,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1533 transitions. [2022-11-16 11:05:54,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 383.25) internal successors, (1533), 4 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states 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 11:05:54,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 11:05:54,949 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 11:05:54,949 INFO L175 Difference]: Start difference. First operand has 462 places, 429 transitions, 1190 flow. Second operand 4 states and 1533 transitions. [2022-11-16 11:05:54,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 428 transitions, 1226 flow [2022-11-16 11:05:54,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 428 transitions, 1180 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 11:05:54,965 INFO L231 Difference]: Finished difference. Result has 446 places, 428 transitions, 1150 flow [2022-11-16 11:05:54,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1150, PETRI_PLACES=446, PETRI_TRANSITIONS=428} [2022-11-16 11:05:54,967 INFO L288 CegarLoopForPetriNet]: 396 programPoint places, 50 predicate places. [2022-11-16 11:05:54,967 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 428 transitions, 1150 flow [2022-11-16 11:05:54,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 382.2) internal successors, (1911), 5 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states 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 11:05:54,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:54,968 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, 1, 1, 1, 1] [2022-11-16 11:05:54,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:55,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e98db4-928a-4fda-9abc-e34c0d5468bd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 11:05:55,175 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:05:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash -133430329, now seen corresponding path program 1 times [2022-11-16 11:05:55,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:55,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461968029] [2022-11-16 11:05:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:55,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,765 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 11:05:55,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:55,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461968029] [2022-11-16 11:05:55,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461968029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:55,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:55,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:05:55,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013703236] [2022-11-16 11:05:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:55,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:05:55,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:55,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:05:55,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:05:55,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 464 [2022-11-16 11:05:55,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 428 transitions, 1150 flow. Second operand has 11 states, 11 states have (on average 330.3636363636364) internal successors, (3634), 11 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states 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 11:05:55,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:55,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 464 [2022-11-16 11:05:55,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand