./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/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_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/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_10f8462f-f343-484a-9fd8-91202c9f3eaa/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 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --- 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 12:38:14,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:38:14,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:38:14,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:38:14,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:38:14,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:38:14,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:38:14,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:38:14,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:38:14,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:38:14,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:38:14,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:38:14,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:38:14,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:38:14,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:38:14,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:38:14,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:38:14,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:38:14,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:38:14,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:38:14,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:38:14,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:38:14,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:38:14,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:38:14,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:38:14,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:38:14,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:38:14,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:38:14,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:38:14,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:38:14,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:38:14,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:38:14,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:38:14,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:38:14,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:38:14,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:38:14,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:38:14,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:38:14,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:38:14,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:38:14,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:38:14,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:38:14,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:38:14,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:38:14,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:38:14,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:38:14,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:38:14,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:38:14,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:38:14,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:38:14,641 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:38:14,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:38:14,641 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:38:14,641 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:38:14,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:38:14,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:38:14,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:38:14,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:38:14,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:38:14,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:38:14,643 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:38:14,643 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:38:14,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:38:14,643 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:38:14,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:38:14,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:38:14,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:38:14,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:38:14,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:38:14,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:38:14,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:38:14,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:38:14,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:38:14,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:38:14,645 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:38:14,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:38:14,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:38:14,646 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_10f8462f-f343-484a-9fd8-91202c9f3eaa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2022-11-16 12:38:14,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:38:14,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:38:14,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:38:14,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:38:14,993 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:38:14,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-16 12:38:15,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/data/a75667c39/68d8701d6ad741ff97bfa52feddb3c42/FLAG017bbe5ce [2022-11-16 12:38:15,531 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:38:15,532 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-16 12:38:15,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/data/a75667c39/68d8701d6ad741ff97bfa52feddb3c42/FLAG017bbe5ce [2022-11-16 12:38:15,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/data/a75667c39/68d8701d6ad741ff97bfa52feddb3c42 [2022-11-16 12:38:15,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:38:15,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:38:15,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:38:15,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:38:15,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:38:15,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:38:15" (1/1) ... [2022-11-16 12:38:15,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619f20e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:15, skipping insertion in model container [2022-11-16 12:38:15,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:38:15" (1/1) ... [2022-11-16 12:38:15,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:38:15,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:38:16,229 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_10f8462f-f343-484a-9fd8-91202c9f3eaa/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-16 12:38:16,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:38:16,266 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:38:16,318 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_10f8462f-f343-484a-9fd8-91202c9f3eaa/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-16 12:38:16,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:38:16,350 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:38:16,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16 WrapperNode [2022-11-16 12:38:16,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:38:16,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:38:16,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:38:16,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:38:16,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (1/1) ... [2022-11-16 12:38:16,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (1/1) ... [2022-11-16 12:38:16,426 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 355 [2022-11-16 12:38:16,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:38:16,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:38:16,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:38:16,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:38:16,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (1/1) ... [2022-11-16 12:38:16,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (1/1) ... [2022-11-16 12:38:16,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (1/1) ... [2022-11-16 12:38:16,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (1/1) ... [2022-11-16 12:38:16,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (1/1) ... [2022-11-16 12:38:16,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (1/1) ... [2022-11-16 12:38:16,478 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (1/1) ... [2022-11-16 12:38:16,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (1/1) ... [2022-11-16 12:38:16,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:38:16,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:38:16,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:38:16,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:38:16,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (1/1) ... [2022-11-16 12:38:16,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:38:16,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:16,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:16,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:38:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:38:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:38:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:38:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:38:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:38:16,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:38:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:38:16,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:38:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:38:16,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:38:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:38:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:38:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:38:16,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:38:16,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:38:16,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:38:16,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:38:16,593 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 12:38:16,744 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:38:16,747 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:38:17,424 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:38:17,887 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:38:17,888 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:38:17,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:17 BoogieIcfgContainer [2022-11-16 12:38:17,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:38:17,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:38:17,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:38:17,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:38:17,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:38:15" (1/3) ... [2022-11-16 12:38:17,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429f3e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:38:17, skipping insertion in model container [2022-11-16 12:38:17,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:16" (2/3) ... [2022-11-16 12:38:17,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429f3e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:38:17, skipping insertion in model container [2022-11-16 12:38:17,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:17" (3/3) ... [2022-11-16 12:38:17,903 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2022-11-16 12:38:17,913 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:38:17,923 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:38:17,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-16 12:38:17,924 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:38:18,087 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:38:18,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 281 transitions, 586 flow [2022-11-16 12:38:18,315 INFO L130 PetriNetUnfolder]: 19/278 cut-off events. [2022-11-16 12:38:18,316 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:38:18,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 278 events. 19/278 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 208 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 238. Up to 2 conditions per place. [2022-11-16 12:38:18,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 281 transitions, 586 flow [2022-11-16 12:38:18,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 257 transitions, 529 flow [2022-11-16 12:38:18,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:38:18,361 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;@35d88e45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:38:18,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-16 12:38:18,374 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-16 12:38:18,374 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:38:18,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:18,375 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:18,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:18,381 INFO L85 PathProgramCache]: Analyzing trace with hash 512573450, now seen corresponding path program 1 times [2022-11-16 12:38:18,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:18,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142771534] [2022-11-16 12:38:18,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:18,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:18,823 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 12:38:18,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:18,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142771534] [2022-11-16 12:38:18,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142771534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:18,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:18,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:38:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548396835] [2022-11-16 12:38:18,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:18,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:18,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:18,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:18,867 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-16 12:38:18,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 257 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 12:38:18,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:18,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-16 12:38:18,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:19,777 INFO L130 PetriNetUnfolder]: 735/1433 cut-off events. [2022-11-16 12:38:19,778 INFO L131 PetriNetUnfolder]: For 206/210 co-relation queries the response was YES. [2022-11-16 12:38:19,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 1433 events. 735/1433 cut-off events. For 206/210 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6617 event pairs, 526 based on Foata normal form. 210/1093 useless extension candidates. Maximal degree in co-relation 1164. Up to 592 conditions per place. [2022-11-16 12:38:19,798 INFO L137 encePairwiseOnDemand]: 241/281 looper letters, 90 selfloop transitions, 14 changer transitions 6/284 dead transitions. [2022-11-16 12:38:19,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 284 transitions, 806 flow [2022-11-16 12:38:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:38:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:38:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1149 transitions. [2022-11-16 12:38:19,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177935943060498 [2022-11-16 12:38:19,823 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1149 transitions. [2022-11-16 12:38:19,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1149 transitions. [2022-11-16 12:38:19,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:19,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1149 transitions. [2022-11-16 12:38:19,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.8) internal successors, (1149), 5 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states 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 12:38:19,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states 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 12:38:19,849 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states 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 12:38:19,851 INFO L175 Difference]: Start difference. First operand has 249 places, 257 transitions, 529 flow. Second operand 5 states and 1149 transitions. [2022-11-16 12:38:19,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 284 transitions, 806 flow [2022-11-16 12:38:19,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 788 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:38:19,865 INFO L231 Difference]: Finished difference. Result has 243 places, 242 transitions, 572 flow [2022-11-16 12:38:19,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=572, PETRI_PLACES=243, PETRI_TRANSITIONS=242} [2022-11-16 12:38:19,873 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -6 predicate places. [2022-11-16 12:38:19,874 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 242 transitions, 572 flow [2022-11-16 12:38:19,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 12:38:19,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:19,876 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:19,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:38:19,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:19,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:19,877 INFO L85 PathProgramCache]: Analyzing trace with hash -39895741, now seen corresponding path program 1 times [2022-11-16 12:38:19,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:19,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410553837] [2022-11-16 12:38:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:19,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:20,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:20,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410553837] [2022-11-16 12:38:20,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410553837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:20,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467497237] [2022-11-16 12:38:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:20,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:20,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:20,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:20,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:38:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:20,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:38:20,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:20,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:20,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:20,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467497237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:38:20,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:38:20,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:38:20,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523316900] [2022-11-16 12:38:20,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:20,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:38:20,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:20,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:38:20,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:38:20,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-16 12:38:20,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 242 transitions, 572 flow. Second operand has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states 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 12:38:20,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:20,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-16 12:38:20,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:22,219 INFO L130 PetriNetUnfolder]: 1836/3425 cut-off events. [2022-11-16 12:38:22,219 INFO L131 PetriNetUnfolder]: For 143/153 co-relation queries the response was YES. [2022-11-16 12:38:22,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 3425 events. 1836/3425 cut-off events. For 143/153 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 18828 event pairs, 1315 based on Foata normal form. 9/2089 useless extension candidates. Maximal degree in co-relation 5008. Up to 583 conditions per place. [2022-11-16 12:38:22,250 INFO L137 encePairwiseOnDemand]: 258/281 looper letters, 189 selfloop transitions, 62 changer transitions 0/425 dead transitions. [2022-11-16 12:38:22,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 425 transitions, 1542 flow [2022-11-16 12:38:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:38:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:38:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3878 transitions. [2022-11-16 12:38:22,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7667062079873468 [2022-11-16 12:38:22,260 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3878 transitions. [2022-11-16 12:38:22,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3878 transitions. [2022-11-16 12:38:22,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:22,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3878 transitions. [2022-11-16 12:38:22,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 215.44444444444446) internal successors, (3878), 18 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states 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 12:38:22,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states 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 12:38:22,284 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states 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 12:38:22,284 INFO L175 Difference]: Start difference. First operand has 243 places, 242 transitions, 572 flow. Second operand 18 states and 3878 transitions. [2022-11-16 12:38:22,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 425 transitions, 1542 flow [2022-11-16 12:38:22,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 425 transitions, 1534 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:38:22,295 INFO L231 Difference]: Finished difference. Result has 257 places, 284 transitions, 934 flow [2022-11-16 12:38:22,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=934, PETRI_PLACES=257, PETRI_TRANSITIONS=284} [2022-11-16 12:38:22,296 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 8 predicate places. [2022-11-16 12:38:22,296 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 284 transitions, 934 flow [2022-11-16 12:38:22,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states 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 12:38:22,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:22,298 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:22,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:22,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:22,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:22,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:22,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1236767130, now seen corresponding path program 1 times [2022-11-16 12:38:22,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:22,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981632436] [2022-11-16 12:38:22,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:22,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:22,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:22,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981632436] [2022-11-16 12:38:22,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981632436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:22,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238747894] [2022-11-16 12:38:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:22,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:22,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:22,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:22,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:38:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:22,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:38:22,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:22,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:22,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238747894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:22,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:38:22,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:38:22,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725152334] [2022-11-16 12:38:22,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:22,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:22,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:22,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:38:22,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-16 12:38:22,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 284 transitions, 934 flow. Second operand has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 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 12:38:22,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:22,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-16 12:38:22,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:24,297 INFO L130 PetriNetUnfolder]: 1836/3413 cut-off events. [2022-11-16 12:38:24,298 INFO L131 PetriNetUnfolder]: For 295/305 co-relation queries the response was YES. [2022-11-16 12:38:24,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6844 conditions, 3413 events. 1836/3413 cut-off events. For 295/305 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 18608 event pairs, 1315 based on Foata normal form. 12/2080 useless extension candidates. Maximal degree in co-relation 5431. Up to 2260 conditions per place. [2022-11-16 12:38:24,327 INFO L137 encePairwiseOnDemand]: 264/281 looper letters, 91 selfloop transitions, 43 changer transitions 0/308 dead transitions. [2022-11-16 12:38:24,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 308 transitions, 1205 flow [2022-11-16 12:38:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:38:24,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:38:24,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1511 transitions. [2022-11-16 12:38:24,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.768174885612608 [2022-11-16 12:38:24,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1511 transitions. [2022-11-16 12:38:24,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1511 transitions. [2022-11-16 12:38:24,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:24,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1511 transitions. [2022-11-16 12:38:24,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 215.85714285714286) internal successors, (1511), 7 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states 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 12:38:24,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states 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 12:38:24,341 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states 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 12:38:24,341 INFO L175 Difference]: Start difference. First operand has 257 places, 284 transitions, 934 flow. Second operand 7 states and 1511 transitions. [2022-11-16 12:38:24,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 308 transitions, 1205 flow [2022-11-16 12:38:24,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 308 transitions, 1089 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 12:38:24,352 INFO L231 Difference]: Finished difference. Result has 251 places, 272 transitions, 823 flow [2022-11-16 12:38:24,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=823, PETRI_PLACES=251, PETRI_TRANSITIONS=272} [2022-11-16 12:38:24,355 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 2 predicate places. [2022-11-16 12:38:24,355 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 272 transitions, 823 flow [2022-11-16 12:38:24,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 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 12:38:24,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:24,359 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:24,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 12:38:24,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:24,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:24,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:24,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1236068278, now seen corresponding path program 2 times [2022-11-16 12:38:24,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:24,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56819970] [2022-11-16 12:38:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:24,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:24,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:24,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56819970] [2022-11-16 12:38:24,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56819970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:24,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412822648] [2022-11-16 12:38:24,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:38:24,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:24,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:24,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:24,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:38:25,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:38:25,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:38:25,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:38:25,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:38:25,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:38:25,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412822648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:38:25,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:38:25,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:38:25,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486785849] [2022-11-16 12:38:25,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:25,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:38:25,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:25,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:38:25,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:38:25,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-16 12:38:25,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 272 transitions, 823 flow. Second operand has 18 states, 18 states have (on average 184.61111111111111) internal successors, (3323), 18 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states 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 12:38:25,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:25,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-16 12:38:25,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:27,932 INFO L130 PetriNetUnfolder]: 1219/2696 cut-off events. [2022-11-16 12:38:27,933 INFO L131 PetriNetUnfolder]: For 315/322 co-relation queries the response was YES. [2022-11-16 12:38:27,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 2696 events. 1219/2696 cut-off events. For 315/322 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13991 event pairs, 770 based on Foata normal form. 6/2051 useless extension candidates. Maximal degree in co-relation 3846. Up to 300 conditions per place. [2022-11-16 12:38:27,956 INFO L137 encePairwiseOnDemand]: 249/281 looper letters, 234 selfloop transitions, 97 changer transitions 0/485 dead transitions. [2022-11-16 12:38:27,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 485 transitions, 2048 flow [2022-11-16 12:38:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 12:38:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 12:38:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 9234 transitions. [2022-11-16 12:38:27,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6706369380492411 [2022-11-16 12:38:27,982 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 9234 transitions. [2022-11-16 12:38:27,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 9234 transitions. [2022-11-16 12:38:27,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:27,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 9234 transitions. [2022-11-16 12:38:28,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 188.44897959183675) internal successors, (9234), 49 states have internal predecessors, (9234), 0 states have call successors, (0), 0 states 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 12:38:28,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 281.0) internal successors, (14050), 50 states have internal predecessors, (14050), 0 states have call successors, (0), 0 states 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 12:38:28,049 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 281.0) internal successors, (14050), 50 states have internal predecessors, (14050), 0 states have call successors, (0), 0 states 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 12:38:28,049 INFO L175 Difference]: Start difference. First operand has 251 places, 272 transitions, 823 flow. Second operand 49 states and 9234 transitions. [2022-11-16 12:38:28,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 485 transitions, 2048 flow [2022-11-16 12:38:28,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 485 transitions, 1979 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:38:28,063 INFO L231 Difference]: Finished difference. Result has 293 places, 308 transitions, 1158 flow [2022-11-16 12:38:28,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1158, PETRI_PLACES=293, PETRI_TRANSITIONS=308} [2022-11-16 12:38:28,065 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 44 predicate places. [2022-11-16 12:38:28,065 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 308 transitions, 1158 flow [2022-11-16 12:38:28,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 184.61111111111111) internal successors, (3323), 18 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states 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 12:38:28,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:28,068 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:28,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:28,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:28,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:28,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:28,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1312161369, now seen corresponding path program 1 times [2022-11-16 12:38:28,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:28,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419693890] [2022-11-16 12:38:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:28,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:28,583 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 12:38:28,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:28,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419693890] [2022-11-16 12:38:28,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419693890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:28,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:28,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:38:28,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163716246] [2022-11-16 12:38:28,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:28,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:28,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:28,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 281 [2022-11-16 12:38:28,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 308 transitions, 1158 flow. Second operand has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states 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 12:38:28,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:28,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 281 [2022-11-16 12:38:28,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:29,650 INFO L130 PetriNetUnfolder]: 1059/2462 cut-off events. [2022-11-16 12:38:29,650 INFO L131 PetriNetUnfolder]: For 534/541 co-relation queries the response was YES. [2022-11-16 12:38:29,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 2462 events. 1059/2462 cut-off events. For 534/541 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12555 event pairs, 668 based on Foata normal form. 16/1928 useless extension candidates. Maximal degree in co-relation 4398. Up to 1607 conditions per place. [2022-11-16 12:38:29,667 INFO L137 encePairwiseOnDemand]: 270/281 looper letters, 124 selfloop transitions, 7 changer transitions 0/319 dead transitions. [2022-11-16 12:38:29,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 319 transitions, 1448 flow [2022-11-16 12:38:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:38:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:38:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1466 transitions. [2022-11-16 12:38:29,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7452974072191154 [2022-11-16 12:38:29,672 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1466 transitions. [2022-11-16 12:38:29,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1466 transitions. [2022-11-16 12:38:29,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:29,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1466 transitions. [2022-11-16 12:38:29,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.42857142857142) internal successors, (1466), 7 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states 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 12:38:29,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states 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 12:38:29,681 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states 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 12:38:29,681 INFO L175 Difference]: Start difference. First operand has 293 places, 308 transitions, 1158 flow. Second operand 7 states and 1466 transitions. [2022-11-16 12:38:29,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 319 transitions, 1448 flow [2022-11-16 12:38:29,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 319 transitions, 1325 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-16 12:38:29,691 INFO L231 Difference]: Finished difference. Result has 285 places, 308 transitions, 1058 flow [2022-11-16 12:38:29,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1058, PETRI_PLACES=285, PETRI_TRANSITIONS=308} [2022-11-16 12:38:29,692 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 36 predicate places. [2022-11-16 12:38:29,693 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 308 transitions, 1058 flow [2022-11-16 12:38:29,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states 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 12:38:29,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:29,694 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:29,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:38:29,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:29,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:29,695 INFO L85 PathProgramCache]: Analyzing trace with hash 925704683, now seen corresponding path program 1 times [2022-11-16 12:38:29,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:29,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450625760] [2022-11-16 12:38:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:29,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:30,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:30,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450625760] [2022-11-16 12:38:30,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450625760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:30,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165517247] [2022-11-16 12:38:30,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:30,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:30,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:30,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:30,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:38:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:30,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:38:30,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:30,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:30,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165517247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:38:30,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:38:30,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-16 12:38:30,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876502456] [2022-11-16 12:38:30,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:30,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:38:30,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:30,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:38:30,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:38:30,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-16 12:38:30,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 308 transitions, 1058 flow. Second operand has 32 states, 32 states have (on average 204.28125) internal successors, (6537), 32 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states 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 12:38:30,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:30,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-16 12:38:30,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:34,292 INFO L130 PetriNetUnfolder]: 2451/5453 cut-off events. [2022-11-16 12:38:34,292 INFO L131 PetriNetUnfolder]: For 1222/1237 co-relation queries the response was YES. [2022-11-16 12:38:34,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11805 conditions, 5453 events. 2451/5453 cut-off events. For 1222/1237 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 31786 event pairs, 1548 based on Foata normal form. 16/4199 useless extension candidates. Maximal degree in co-relation 11058. Up to 1121 conditions per place. [2022-11-16 12:38:34,345 INFO L137 encePairwiseOnDemand]: 262/281 looper letters, 480 selfloop transitions, 160 changer transitions 0/820 dead transitions. [2022-11-16 12:38:34,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 820 transitions, 4120 flow [2022-11-16 12:38:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 12:38:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 12:38:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 9500 transitions. [2022-11-16 12:38:34,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7683597541248787 [2022-11-16 12:38:34,374 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 9500 transitions. [2022-11-16 12:38:34,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 9500 transitions. [2022-11-16 12:38:34,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:34,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 9500 transitions. [2022-11-16 12:38:34,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 215.9090909090909) internal successors, (9500), 44 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 12:38:34,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 281.0) internal successors, (12645), 45 states have internal predecessors, (12645), 0 states have call successors, (0), 0 states 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 12:38:34,441 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 281.0) internal successors, (12645), 45 states have internal predecessors, (12645), 0 states have call successors, (0), 0 states 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 12:38:34,441 INFO L175 Difference]: Start difference. First operand has 285 places, 308 transitions, 1058 flow. Second operand 44 states and 9500 transitions. [2022-11-16 12:38:34,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 820 transitions, 4120 flow [2022-11-16 12:38:34,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 820 transitions, 4110 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:38:34,464 INFO L231 Difference]: Finished difference. Result has 333 places, 401 transitions, 2058 flow [2022-11-16 12:38:34,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2058, PETRI_PLACES=333, PETRI_TRANSITIONS=401} [2022-11-16 12:38:34,468 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 84 predicate places. [2022-11-16 12:38:34,468 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 401 transitions, 2058 flow [2022-11-16 12:38:34,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 204.28125) internal successors, (6537), 32 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states 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 12:38:34,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:34,471 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:34,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:34,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:38:34,678 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:34,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:34,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1006353454, now seen corresponding path program 1 times [2022-11-16 12:38:34,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:34,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572904881] [2022-11-16 12:38:34,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:34,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:35,029 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 12:38:35,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:35,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572904881] [2022-11-16 12:38:35,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572904881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:35,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253336065] [2022-11-16 12:38:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:35,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:35,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:35,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:35,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:38:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:35,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:38:35,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:38:35,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:35,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253336065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:35,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:38:35,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:38:35,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017828062] [2022-11-16 12:38:35,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:35,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:35,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:35,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:35,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:38:35,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 281 [2022-11-16 12:38:35,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 401 transitions, 2058 flow. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states 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 12:38:35,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:35,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 281 [2022-11-16 12:38:35,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:36,465 INFO L130 PetriNetUnfolder]: 1457/3955 cut-off events. [2022-11-16 12:38:36,465 INFO L131 PetriNetUnfolder]: For 1324/1339 co-relation queries the response was YES. [2022-11-16 12:38:36,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7783 conditions, 3955 events. 1457/3955 cut-off events. For 1324/1339 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 21963 event pairs, 792 based on Foata normal form. 0/3483 useless extension candidates. Maximal degree in co-relation 7159. Up to 2230 conditions per place. [2022-11-16 12:38:36,493 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 18 selfloop transitions, 3 changer transitions 0/399 dead transitions. [2022-11-16 12:38:36,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 399 transitions, 2092 flow [2022-11-16 12:38:36,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:38:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 947 transitions. [2022-11-16 12:38:36,503 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8425266903914591 [2022-11-16 12:38:36,503 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 947 transitions. [2022-11-16 12:38:36,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 947 transitions. [2022-11-16 12:38:36,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:36,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 947 transitions. [2022-11-16 12:38:36,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.75) internal successors, (947), 4 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 12:38:36,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states 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 12:38:36,513 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states 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 12:38:36,513 INFO L175 Difference]: Start difference. First operand has 333 places, 401 transitions, 2058 flow. Second operand 4 states and 947 transitions. [2022-11-16 12:38:36,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 399 transitions, 2092 flow [2022-11-16 12:38:36,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 399 transitions, 1990 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-16 12:38:36,533 INFO L231 Difference]: Finished difference. Result has 319 places, 399 transitions, 1954 flow [2022-11-16 12:38:36,533 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1954, PETRI_PLACES=319, PETRI_TRANSITIONS=399} [2022-11-16 12:38:36,535 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 70 predicate places. [2022-11-16 12:38:36,536 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 399 transitions, 1954 flow [2022-11-16 12:38:36,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states 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 12:38:36,536 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:36,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:36,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:36,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:36,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:36,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:36,744 INFO L85 PathProgramCache]: Analyzing trace with hash 738063953, now seen corresponding path program 1 times [2022-11-16 12:38:36,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:36,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320481468] [2022-11-16 12:38:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:36,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:38:36,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:36,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320481468] [2022-11-16 12:38:36,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320481468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:36,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:36,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:38:36,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976861730] [2022-11-16 12:38:36,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:36,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:36,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:36,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:36,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:36,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 281 [2022-11-16 12:38:36,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 399 transitions, 1954 flow. Second operand has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states 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 12:38:36,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:36,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 281 [2022-11-16 12:38:36,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:38,991 INFO L130 PetriNetUnfolder]: 2092/5980 cut-off events. [2022-11-16 12:38:38,991 INFO L131 PetriNetUnfolder]: For 2170/2200 co-relation queries the response was YES. [2022-11-16 12:38:39,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12055 conditions, 5980 events. 2092/5980 cut-off events. For 2170/2200 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 39966 event pairs, 1231 based on Foata normal form. 256/5604 useless extension candidates. Maximal degree in co-relation 11245. Up to 2308 conditions per place. [2022-11-16 12:38:39,034 INFO L137 encePairwiseOnDemand]: 268/281 looper letters, 194 selfloop transitions, 30 changer transitions 18/457 dead transitions. [2022-11-16 12:38:39,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 457 transitions, 2737 flow [2022-11-16 12:38:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:38:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:38:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1876 transitions. [2022-11-16 12:38:39,039 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.741795175958877 [2022-11-16 12:38:39,039 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1876 transitions. [2022-11-16 12:38:39,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1876 transitions. [2022-11-16 12:38:39,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:39,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1876 transitions. [2022-11-16 12:38:39,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 208.44444444444446) internal successors, (1876), 9 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states 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 12:38:39,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states 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 12:38:39,052 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states 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 12:38:39,052 INFO L175 Difference]: Start difference. First operand has 319 places, 399 transitions, 1954 flow. Second operand 9 states and 1876 transitions. [2022-11-16 12:38:39,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 457 transitions, 2737 flow [2022-11-16 12:38:39,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 457 transitions, 2731 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:38:39,076 INFO L231 Difference]: Finished difference. Result has 325 places, 400 transitions, 2021 flow [2022-11-16 12:38:39,077 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2021, PETRI_PLACES=325, PETRI_TRANSITIONS=400} [2022-11-16 12:38:39,078 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 76 predicate places. [2022-11-16 12:38:39,078 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 400 transitions, 2021 flow [2022-11-16 12:38:39,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states 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 12:38:39,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:39,079 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:39,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:38:39,079 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:39,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:39,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1026954275, now seen corresponding path program 1 times [2022-11-16 12:38:39,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:39,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258983505] [2022-11-16 12:38:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:39,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:38:39,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:39,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258983505] [2022-11-16 12:38:39,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258983505] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:39,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285613978] [2022-11-16 12:38:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:39,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:39,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:39,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:38:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:39,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:38:39,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:38:39,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:39,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285613978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:39,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:38:39,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:38:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970687702] [2022-11-16 12:38:39,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:39,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:39,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:39,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:39,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:38:39,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 281 [2022-11-16 12:38:39,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 400 transitions, 2021 flow. Second operand has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 12:38:39,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:39,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 281 [2022-11-16 12:38:39,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:40,974 INFO L130 PetriNetUnfolder]: 1557/5161 cut-off events. [2022-11-16 12:38:40,974 INFO L131 PetriNetUnfolder]: For 1751/1781 co-relation queries the response was YES. [2022-11-16 12:38:40,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 5161 events. 1557/5161 cut-off events. For 1751/1781 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 34942 event pairs, 878 based on Foata normal form. 0/4841 useless extension candidates. Maximal degree in co-relation 9376. Up to 2534 conditions per place. [2022-11-16 12:38:40,992 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 9 selfloop transitions, 3 changer transitions 69/398 dead transitions. [2022-11-16 12:38:40,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 398 transitions, 2063 flow [2022-11-16 12:38:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:40,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:38:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 945 transitions. [2022-11-16 12:38:40,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8407473309608541 [2022-11-16 12:38:40,995 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 945 transitions. [2022-11-16 12:38:40,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 945 transitions. [2022-11-16 12:38:40,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:40,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 945 transitions. [2022-11-16 12:38:40,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.25) internal successors, (945), 4 states have internal predecessors, (945), 0 states have call successors, (0), 0 states 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 12:38:41,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states 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 12:38:41,000 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states 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 12:38:41,000 INFO L175 Difference]: Start difference. First operand has 325 places, 400 transitions, 2021 flow. Second operand 4 states and 945 transitions. [2022-11-16 12:38:41,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 398 transitions, 2063 flow [2022-11-16 12:38:41,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 398 transitions, 2029 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:38:41,023 INFO L231 Difference]: Finished difference. Result has 323 places, 329 transitions, 1816 flow [2022-11-16 12:38:41,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1816, PETRI_PLACES=323, PETRI_TRANSITIONS=329} [2022-11-16 12:38:41,024 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 74 predicate places. [2022-11-16 12:38:41,024 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 329 transitions, 1816 flow [2022-11-16 12:38:41,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 12:38:41,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:41,025 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:41,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 12:38:41,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:41,232 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:41,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:41,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1100458987, now seen corresponding path program 2 times [2022-11-16 12:38:41,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:41,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22720388] [2022-11-16 12:38:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:41,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:42,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22720388] [2022-11-16 12:38:42,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22720388] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:42,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390964739] [2022-11-16 12:38:42,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:38:42,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:42,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:42,415 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:42,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:38:42,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:38:42,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:38:42,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:38:42,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-16 12:38:42,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-16 12:38:43,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390964739] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:38:43,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:38:43,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-11-16 12:38:43,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649085717] [2022-11-16 12:38:43,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:43,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 12:38:43,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:43,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 12:38:43,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 12:38:43,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-16 12:38:43,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 329 transitions, 1816 flow. Second operand has 38 states, 38 states have (on average 184.76315789473685) internal successors, (7021), 38 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states 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 12:38:43,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:43,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-16 12:38:43,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:48,113 INFO L130 PetriNetUnfolder]: 35/1291 cut-off events. [2022-11-16 12:38:48,113 INFO L131 PetriNetUnfolder]: For 2099/2099 co-relation queries the response was YES. [2022-11-16 12:38:48,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 1291 events. 35/1291 cut-off events. For 2099/2099 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4949 event pairs, 0 based on Foata normal form. 6/1297 useless extension candidates. Maximal degree in co-relation 2967. Up to 112 conditions per place. [2022-11-16 12:38:48,118 INFO L137 encePairwiseOnDemand]: 255/281 looper letters, 253 selfloop transitions, 269 changer transitions 0/627 dead transitions. [2022-11-16 12:38:48,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 627 transitions, 3977 flow [2022-11-16 12:38:48,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-11-16 12:38:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2022-11-16 12:38:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 24961 transitions. [2022-11-16 12:38:48,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6579939369974958 [2022-11-16 12:38:48,210 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 24961 transitions. [2022-11-16 12:38:48,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 24961 transitions. [2022-11-16 12:38:48,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:48,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 24961 transitions. [2022-11-16 12:38:48,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 184.8962962962963) internal successors, (24961), 135 states have internal predecessors, (24961), 0 states have call successors, (0), 0 states 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 12:38:48,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 281.0) internal successors, (38216), 136 states have internal predecessors, (38216), 0 states have call successors, (0), 0 states 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 12:38:48,360 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 281.0) internal successors, (38216), 136 states have internal predecessors, (38216), 0 states have call successors, (0), 0 states 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 12:38:48,361 INFO L175 Difference]: Start difference. First operand has 323 places, 329 transitions, 1816 flow. Second operand 135 states and 24961 transitions. [2022-11-16 12:38:48,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 627 transitions, 3977 flow [2022-11-16 12:38:48,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 627 transitions, 3888 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:38:48,393 INFO L231 Difference]: Finished difference. Result has 391 places, 424 transitions, 2769 flow [2022-11-16 12:38:48,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=2769, PETRI_PLACES=391, PETRI_TRANSITIONS=424} [2022-11-16 12:38:48,396 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 142 predicate places. [2022-11-16 12:38:48,396 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 424 transitions, 2769 flow [2022-11-16 12:38:48,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 184.76315789473685) internal successors, (7021), 38 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states 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 12:38:48,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:48,399 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:48,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:48,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:38:48,605 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:48,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:48,606 INFO L85 PathProgramCache]: Analyzing trace with hash -423109273, now seen corresponding path program 1 times [2022-11-16 12:38:48,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:48,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498776440] [2022-11-16 12:38:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:48,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:50,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:50,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498776440] [2022-11-16 12:38:50,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498776440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:50,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584509462] [2022-11-16 12:38:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:50,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:50,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:50,319 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:50,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:38:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:50,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 12:38:50,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:50,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:52,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584509462] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:38:52,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:38:52,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 71 [2022-11-16 12:38:52,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090978960] [2022-11-16 12:38:52,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:52,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-16 12:38:52,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:52,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-16 12:38:52,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2022-11-16 12:38:52,287 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-16 12:38:52,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 424 transitions, 2769 flow. Second operand has 72 states, 72 states have (on average 204.44444444444446) internal successors, (14720), 72 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states 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 12:38:52,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:52,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-16 12:38:52,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:57,453 INFO L130 PetriNetUnfolder]: 71/2226 cut-off events. [2022-11-16 12:38:57,453 INFO L131 PetriNetUnfolder]: For 6068/6068 co-relation queries the response was YES. [2022-11-16 12:38:57,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5542 conditions, 2226 events. 71/2226 cut-off events. For 6068/6068 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8861 event pairs, 0 based on Foata normal form. 18/2244 useless extension candidates. Maximal degree in co-relation 5516. Up to 217 conditions per place. [2022-11-16 12:38:57,464 INFO L137 encePairwiseOnDemand]: 263/281 looper letters, 497 selfloop transitions, 380 changer transitions 0/1066 dead transitions. [2022-11-16 12:38:57,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1066 transitions, 8526 flow [2022-11-16 12:38:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-16 12:38:57,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2022-11-16 12:38:57,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 21799 transitions. [2022-11-16 12:38:57,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7459280043799617 [2022-11-16 12:38:57,490 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 21799 transitions. [2022-11-16 12:38:57,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 21799 transitions. [2022-11-16 12:38:57,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:57,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 21799 transitions. [2022-11-16 12:38:57,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 209.60576923076923) internal successors, (21799), 104 states have internal predecessors, (21799), 0 states have call successors, (0), 0 states 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 12:38:57,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 281.0) internal successors, (29505), 105 states have internal predecessors, (29505), 0 states have call successors, (0), 0 states 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 12:38:57,563 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 281.0) internal successors, (29505), 105 states have internal predecessors, (29505), 0 states have call successors, (0), 0 states 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 12:38:57,563 INFO L175 Difference]: Start difference. First operand has 391 places, 424 transitions, 2769 flow. Second operand 104 states and 21799 transitions. [2022-11-16 12:38:57,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1066 transitions, 8526 flow [2022-11-16 12:38:57,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1066 transitions, 7958 flow, removed 162 selfloop flow, removed 28 redundant places. [2022-11-16 12:38:57,613 INFO L231 Difference]: Finished difference. Result has 485 places, 627 transitions, 5327 flow [2022-11-16 12:38:57,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=5327, PETRI_PLACES=485, PETRI_TRANSITIONS=627} [2022-11-16 12:38:57,615 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 236 predicate places. [2022-11-16 12:38:57,615 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 627 transitions, 5327 flow [2022-11-16 12:38:57,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 204.44444444444446) internal successors, (14720), 72 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states 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 12:38:57,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:57,619 INFO L209 CegarLoopForPetriNet]: trace histogram [35, 35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:57,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:57,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:57,826 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 12:38:57,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash -169415609, now seen corresponding path program 2 times [2022-11-16 12:38:57,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:57,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497892694] [2022-11-16 12:38:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:57,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:02,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:02,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497892694] [2022-11-16 12:39:02,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497892694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:02,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704318505] [2022-11-16 12:39:02,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:39:02,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:02,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:02,421 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:02,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:39:02,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:39:02,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:02,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:39:02,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-16 12:39:03,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-16 12:39:03,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704318505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:03,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:39:03,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 7, 7] total 77 [2022-11-16 12:39:03,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259157911] [2022-11-16 12:39:03,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:03,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-11-16 12:39:03,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:03,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-11-16 12:39:03,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1413, Invalid=4593, Unknown=0, NotChecked=0, Total=6006 [2022-11-16 12:39:04,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-16 12:39:04,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 627 transitions, 5327 flow. Second operand has 78 states, 78 states have (on average 184.73076923076923) internal successors, (14409), 78 states have internal predecessors, (14409), 0 states have call successors, (0), 0 states 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 12:39:04,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:04,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-16 12:39:04,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:20,121 INFO L130 PetriNetUnfolder]: 75/2340 cut-off events. [2022-11-16 12:39:20,121 INFO L131 PetriNetUnfolder]: For 6583/6583 co-relation queries the response was YES. [2022-11-16 12:39:20,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 2340 events. 75/2340 cut-off events. For 6583/6583 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9396 event pairs, 0 based on Foata normal form. 2/2342 useless extension candidates. Maximal degree in co-relation 6235. Up to 209 conditions per place. [2022-11-16 12:39:20,129 INFO L137 encePairwiseOnDemand]: 256/281 looper letters, 0 selfloop transitions, 0 changer transitions 1258/1258 dead transitions. [2022-11-16 12:39:20,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 777 places, 1258 transitions, 10361 flow [2022-11-16 12:39:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2022-11-16 12:39:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2022-11-16 12:39:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 54337 transitions. [2022-11-16 12:39:20,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6577214515699519 [2022-11-16 12:39:20,182 INFO L72 ComplementDD]: Start complementDD. Operand 294 states and 54337 transitions. [2022-11-16 12:39:20,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 54337 transitions. [2022-11-16 12:39:20,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:20,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 294 states and 54337 transitions. [2022-11-16 12:39:20,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 295 states, 294 states have (on average 184.81972789115648) internal successors, (54337), 294 states have internal predecessors, (54337), 0 states have call successors, (0), 0 states 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 12:39:20,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 295 states, 295 states have (on average 281.0) internal successors, (82895), 295 states have internal predecessors, (82895), 0 states have call successors, (0), 0 states 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 12:39:20,353 INFO L81 ComplementDD]: Finished complementDD. Result has 295 states, 295 states have (on average 281.0) internal successors, (82895), 295 states have internal predecessors, (82895), 0 states have call successors, (0), 0 states 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 12:39:20,353 INFO L175 Difference]: Start difference. First operand has 485 places, 627 transitions, 5327 flow. Second operand 294 states and 54337 transitions. [2022-11-16 12:39:20,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 777 places, 1258 transitions, 10361 flow [2022-11-16 12:39:20,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 1258 transitions, 9859 flow, removed 3 selfloop flow, removed 79 redundant places. [2022-11-16 12:39:20,424 INFO L231 Difference]: Finished difference. Result has 698 places, 0 transitions, 0 flow [2022-11-16 12:39:20,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=294, PETRI_FLOW=0, PETRI_PLACES=698, PETRI_TRANSITIONS=0} [2022-11-16 12:39:20,425 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 449 predicate places. [2022-11-16 12:39:20,425 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 0 transitions, 0 flow [2022-11-16 12:39:20,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 184.73076923076923) internal successors, (14409), 78 states have internal predecessors, (14409), 0 states have call successors, (0), 0 states 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 12:39:20,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2022-11-16 12:39:20,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2022-11-16 12:39:20,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2022-11-16 12:39:20,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2022-11-16 12:39:20,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2022-11-16 12:39:20,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2022-11-16 12:39:20,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2022-11-16 12:39:20,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2022-11-16 12:39:20,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2022-11-16 12:39:20,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2022-11-16 12:39:20,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2022-11-16 12:39:20,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2022-11-16 12:39:20,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2022-11-16 12:39:20,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2022-11-16 12:39:20,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2022-11-16 12:39:20,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2022-11-16 12:39:20,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2022-11-16 12:39:20,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2022-11-16 12:39:20,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2022-11-16 12:39:20,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2022-11-16 12:39:20,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2022-11-16 12:39:20,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2022-11-16 12:39:20,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2022-11-16 12:39:20,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2022-11-16 12:39:20,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2022-11-16 12:39:20,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2022-11-16 12:39:20,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2022-11-16 12:39:20,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2022-11-16 12:39:20,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2022-11-16 12:39:20,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2022-11-16 12:39:20,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2022-11-16 12:39:20,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2022-11-16 12:39:20,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2022-11-16 12:39:20,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2022-11-16 12:39:20,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2022-11-16 12:39:20,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2022-11-16 12:39:20,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2022-11-16 12:39:20,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2022-11-16 12:39:20,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2022-11-16 12:39:20,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2022-11-16 12:39:20,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2022-11-16 12:39:20,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:20,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:39:20,639 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:20,645 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:39:20,645 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:39:20,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:39:20 BasicIcfg [2022-11-16 12:39:20,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:39:20,652 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:39:20,652 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:39:20,652 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:39:20,653 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:17" (3/4) ... [2022-11-16 12:39:20,655 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:39:20,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:39:20,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:39:20,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 12:39:20,666 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2022-11-16 12:39:20,666 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:39:20,667 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:39:20,667 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:39:20,713 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:39:20,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:39:20,714 INFO L158 Benchmark]: Toolchain (without parser) took 64808.92ms. Allocated memory was 113.2MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 75.1MB in the beginning and 1.0GB in the end (delta: -933.9MB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2022-11-16 12:39:20,714 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:39:20,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.29ms. Allocated memory is still 113.2MB. Free memory was 74.9MB in the beginning and 85.3MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:39:20,715 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.09ms. Allocated memory is still 113.2MB. Free memory was 85.2MB in the beginning and 82.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:39:20,715 INFO L158 Benchmark]: Boogie Preprocessor took 57.05ms. Allocated memory is still 113.2MB. Free memory was 82.4MB in the beginning and 80.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:39:20,715 INFO L158 Benchmark]: RCFGBuilder took 1406.86ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 80.1MB in the beginning and 82.1MB in the end (delta: -2.1MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2022-11-16 12:39:20,716 INFO L158 Benchmark]: TraceAbstraction took 62755.56ms. Allocated memory was 136.3MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 81.5MB in the beginning and 1.0GB in the end (delta: -931.7MB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2022-11-16 12:39:20,716 INFO L158 Benchmark]: Witness Printer took 60.89ms. Allocated memory is still 2.6GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:39:20,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.29ms. Allocated memory is still 113.2MB. Free memory was 74.9MB in the beginning and 85.3MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.09ms. Allocated memory is still 113.2MB. Free memory was 85.2MB in the beginning and 82.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.05ms. Allocated memory is still 113.2MB. Free memory was 82.4MB in the beginning and 80.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1406.86ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 80.1MB in the beginning and 82.1MB in the end (delta: -2.1MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. * TraceAbstraction took 62755.56ms. Allocated memory was 136.3MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 81.5MB in the beginning and 1.0GB in the end (delta: -931.7MB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 60.89ms. Allocated memory is still 2.6GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 308 locations, 41 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 62.5s, OverallIterations: 12, TraceHistogramMax: 35, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 43.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12724 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12724 mSDsluCounter, 1304 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1102 mSDsCounter, 1572 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5891 IncrementalHoareTripleChecker+Invalid, 7463 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1572 mSolverCounterUnsat, 202 mSDtfsCounter, 5891 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3780 GetRequests, 2909 SyntacticMatches, 15 SemanticMatches, 856 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67449 ImplicationChecksByTransitivity, 25.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5327occurred in iteration=11, InterpolantAutomatonStates: 680, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 3704 NumberOfCodeBlocks, 3236 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 4946 ConstructedInterpolants, 0 QuantifiedInterpolants, 10494 SizeOfPredicates, 72 NumberOfNonLiveVariables, 2704 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 11960/22782 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:39:20,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f8462f-f343-484a-9fd8-91202c9f3eaa/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE