./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:31:21,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:31:21,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:31:21,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:31:21,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:31:21,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:31:21,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:31:21,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:31:21,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:31:21,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:31:21,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:31:21,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:31:21,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:31:21,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:31:21,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:31:21,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:31:21,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:31:21,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:31:21,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:31:21,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:31:21,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:31:21,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:31:21,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:31:21,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:31:21,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:31:21,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:31:21,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:31:21,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:31:21,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:31:21,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:31:21,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:31:21,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:31:21,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:31:21,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:31:21,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:31:21,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:31:21,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:31:21,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:31:21,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:31:21,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:31:21,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:31:21,649 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:31:21,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:31:21,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:31:21,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:31:21,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:31:21,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:31:21,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:31:21,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:31:21,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:31:21,674 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:31:21,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:31:21,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:31:21,675 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:31:21,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:31:21,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:31:21,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:31:21,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:31:21,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:31:21,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:31:21,676 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:31:21,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:31:21,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:31:21,677 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:31:21,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:31:21,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:31:21,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:31:21,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:31:21,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:21,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:31:21,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:31:21,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:31:21,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:31:21,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:31:21,679 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:31:21,679 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:31:21,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:31:21,679 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_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b [2022-11-18 19:31:21,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:31:22,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:31:22,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:31:22,012 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:31:22,013 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:31:22,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-11-18 19:31:22,112 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/data/2f5f212d4/d3a49e8822584952a1f931095e717b50/FLAG2d68a01ce [2022-11-18 19:31:22,691 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:31:22,691 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-11-18 19:31:22,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/data/2f5f212d4/d3a49e8822584952a1f931095e717b50/FLAG2d68a01ce [2022-11-18 19:31:23,025 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/data/2f5f212d4/d3a49e8822584952a1f931095e717b50 [2022-11-18 19:31:23,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:31:23,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:31:23,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:23,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:31:23,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:31:23,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23147f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23, skipping insertion in model container [2022-11-18 19:31:23,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:31:23,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:31:23,295 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-11-18 19:31:23,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:23,309 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:31:23,340 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-11-18 19:31:23,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:23,359 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:31:23,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23 WrapperNode [2022-11-18 19:31:23,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:23,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:23,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:31:23,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:31:23,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,425 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 287 [2022-11-18 19:31:23,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:23,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:31:23,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:31:23,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:31:23,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,491 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:31:23,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:31:23,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:31:23,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:31:23,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (1/1) ... [2022-11-18 19:31:23,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:23,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:23,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:23,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:31:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:31:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:31:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:31:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:31:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:31:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:31:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:31:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:31:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:31:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:31:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 19:31:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 19:31:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:31:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:31:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:31:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:31:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:31:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:31:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:31:23,581 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:31:23,732 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:31:23,734 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:31:24,297 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:31:24,436 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:31:24,436 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 19:31:24,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:24 BoogieIcfgContainer [2022-11-18 19:31:24,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:31:24,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:31:24,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:31:24,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:31:24,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:23" (1/3) ... [2022-11-18 19:31:24,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74149d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:24, skipping insertion in model container [2022-11-18 19:31:24,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:23" (2/3) ... [2022-11-18 19:31:24,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74149d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:24, skipping insertion in model container [2022-11-18 19:31:24,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:24" (3/3) ... [2022-11-18 19:31:24,473 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2022-11-18 19:31:24,483 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:31:24,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:31:24,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-18 19:31:24,494 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:31:24,579 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 19:31:24,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 266 transitions, 564 flow [2022-11-18 19:31:24,796 INFO L130 PetriNetUnfolder]: 18/262 cut-off events. [2022-11-18 19:31:24,796 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 19:31:24,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 262 events. 18/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 225 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 227. Up to 3 conditions per place. [2022-11-18 19:31:24,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 266 transitions, 564 flow [2022-11-18 19:31:24,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 239 transitions, 499 flow [2022-11-18 19:31:24,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:31:24,845 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;@14559fc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:31:24,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-18 19:31:24,879 INFO L130 PetriNetUnfolder]: 4/91 cut-off events. [2022-11-18 19:31:24,879 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:31:24,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:24,881 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] [2022-11-18 19:31:24,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:31:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:24,889 INFO L85 PathProgramCache]: Analyzing trace with hash -487851126, now seen corresponding path program 1 times [2022-11-18 19:31:24,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:24,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826644047] [2022-11-18 19:31:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:24,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:25,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:25,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826644047] [2022-11-18 19:31:25,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826644047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:25,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:25,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:25,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910168866] [2022-11-18 19:31:25,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:25,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:25,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:25,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:25,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 266 [2022-11-18 19:31:25,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 239 transitions, 499 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) [2022-11-18 19:31:25,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:25,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 266 [2022-11-18 19:31:25,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:28,092 INFO L130 PetriNetUnfolder]: 4991/8535 cut-off events. [2022-11-18 19:31:28,093 INFO L131 PetriNetUnfolder]: For 2168/2168 co-relation queries the response was YES. [2022-11-18 19:31:28,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16270 conditions, 8535 events. 4991/8535 cut-off events. For 2168/2168 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 62005 event pairs, 3048 based on Foata normal form. 1585/6519 useless extension candidates. Maximal degree in co-relation 7796. Up to 3232 conditions per place. [2022-11-18 19:31:28,249 INFO L137 encePairwiseOnDemand]: 238/266 looper letters, 78 selfloop transitions, 9 changer transitions 6/264 dead transitions. [2022-11-18 19:31:28,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 264 transitions, 744 flow [2022-11-18 19:31:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:31:28,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1121 transitions. [2022-11-18 19:31:28,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8428571428571429 [2022-11-18 19:31:28,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1121 transitions. [2022-11-18 19:31:28,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1121 transitions. [2022-11-18 19:31:28,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:28,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1121 transitions. [2022-11-18 19:31:28,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,292 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:28,294 INFO L175 Difference]: Start difference. First operand has 235 places, 239 transitions, 499 flow. Second operand 5 states and 1121 transitions. [2022-11-18 19:31:28,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 264 transitions, 744 flow [2022-11-18 19:31:28,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 264 transitions, 718 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 19:31:28,306 INFO L231 Difference]: Finished difference. Result has 231 places, 225 transitions, 511 flow [2022-11-18 19:31:28,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=511, PETRI_PLACES=231, PETRI_TRANSITIONS=225} [2022-11-18 19:31:28,312 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, -4 predicate places. [2022-11-18 19:31:28,313 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 225 transitions, 511 flow [2022-11-18 19:31:28,314 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) [2022-11-18 19:31:28,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:28,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:28,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:31:28,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:31:28,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:28,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1085375258, now seen corresponding path program 1 times [2022-11-18 19:31:28,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:28,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136323367] [2022-11-18 19:31:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:28,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:28,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136323367] [2022-11-18 19:31:28,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136323367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:28,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274491857] [2022-11-18 19:31:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:28,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:28,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:28,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:28,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:31:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:31:28,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:28,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:28,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:29,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274491857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:29,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:31:29,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:31:29,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627036552] [2022-11-18 19:31:29,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:29,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:31:29,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:29,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:31:29,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:31:29,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 266 [2022-11-18 19:31:29,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 225 transitions, 511 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) [2022-11-18 19:31:29,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:29,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 266 [2022-11-18 19:31:29,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:34,002 INFO L130 PetriNetUnfolder]: 12476/21183 cut-off events. [2022-11-18 19:31:34,002 INFO L131 PetriNetUnfolder]: For 1557/1557 co-relation queries the response was YES. [2022-11-18 19:31:34,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38872 conditions, 21183 events. 12476/21183 cut-off events. For 1557/1557 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 165510 event pairs, 7620 based on Foata normal form. 6/12214 useless extension candidates. Maximal degree in co-relation 30876. Up to 3225 conditions per place. [2022-11-18 19:31:34,441 INFO L137 encePairwiseOnDemand]: 251/266 looper letters, 171 selfloop transitions, 40 changer transitions 0/382 dead transitions. [2022-11-18 19:31:34,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 382 transitions, 1329 flow [2022-11-18 19:31:34,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:31:34,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:31:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3835 transitions. [2022-11-18 19:31:34,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8009607351712615 [2022-11-18 19:31:34,453 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3835 transitions. [2022-11-18 19:31:34,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3835 transitions. [2022-11-18 19:31:34,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:34,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3835 transitions. [2022-11-18 19:31:34,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.05555555555554) internal successors, (3835), 18 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:34,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:34,484 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:34,484 INFO L175 Difference]: Start difference. First operand has 231 places, 225 transitions, 511 flow. Second operand 18 states and 3835 transitions. [2022-11-18 19:31:34,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 382 transitions, 1329 flow [2022-11-18 19:31:34,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 382 transitions, 1324 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:31:34,501 INFO L231 Difference]: Finished difference. Result has 245 places, 252 transitions, 744 flow [2022-11-18 19:31:34,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=744, PETRI_PLACES=245, PETRI_TRANSITIONS=252} [2022-11-18 19:31:34,503 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 10 predicate places. [2022-11-18 19:31:34,503 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 252 transitions, 744 flow [2022-11-18 19:31:34,506 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) [2022-11-18 19:31:34,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:34,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:34,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:34,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:34,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:31:34,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:34,714 INFO L85 PathProgramCache]: Analyzing trace with hash 713106198, now seen corresponding path program 1 times [2022-11-18 19:31:34,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:34,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432737173] [2022-11-18 19:31:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:34,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:34,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:34,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432737173] [2022-11-18 19:31:34,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432737173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:34,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42326361] [2022-11-18 19:31:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:34,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:34,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:34,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:35,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:31:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:35,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:31:35,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:35,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:35,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42326361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:35,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:35,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:31:35,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326756628] [2022-11-18 19:31:35,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:35,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:31:35,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:35,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:31:35,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:31:35,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 266 [2022-11-18 19:31:35,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 252 transitions, 744 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) [2022-11-18 19:31:35,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:35,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 266 [2022-11-18 19:31:35,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:39,101 INFO L130 PetriNetUnfolder]: 12476/21175 cut-off events. [2022-11-18 19:31:39,101 INFO L131 PetriNetUnfolder]: For 1651/1651 co-relation queries the response was YES. [2022-11-18 19:31:39,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38909 conditions, 21175 events. 12476/21175 cut-off events. For 1651/1651 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 165605 event pairs, 7620 based on Foata normal form. 8/12208 useless extension candidates. Maximal degree in co-relation 31101. Up to 12856 conditions per place. [2022-11-18 19:31:39,367 INFO L137 encePairwiseOnDemand]: 255/266 looper letters, 79 selfloop transitions, 27 changer transitions 0/277 dead transitions. [2022-11-18 19:31:39,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 277 transitions, 980 flow [2022-11-18 19:31:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:31:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:31:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1494 transitions. [2022-11-18 19:31:39,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8023630504833512 [2022-11-18 19:31:39,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1494 transitions. [2022-11-18 19:31:39,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1494 transitions. [2022-11-18 19:31:39,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:39,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1494 transitions. [2022-11-18 19:31:39,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 213.42857142857142) internal successors, (1494), 7 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:39,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:39,386 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:39,386 INFO L175 Difference]: Start difference. First operand has 245 places, 252 transitions, 744 flow. Second operand 7 states and 1494 transitions. [2022-11-18 19:31:39,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 277 transitions, 980 flow [2022-11-18 19:31:39,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 277 transitions, 906 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-18 19:31:39,399 INFO L231 Difference]: Finished difference. Result has 240 places, 244 transitions, 670 flow [2022-11-18 19:31:39,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=670, PETRI_PLACES=240, PETRI_TRANSITIONS=244} [2022-11-18 19:31:39,403 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 5 predicate places. [2022-11-18 19:31:39,403 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 244 transitions, 670 flow [2022-11-18 19:31:39,404 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) [2022-11-18 19:31:39,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:39,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:39,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:39,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:39,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:31:39,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash -534467958, now seen corresponding path program 2 times [2022-11-18 19:31:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:39,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160235380] [2022-11-18 19:31:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:39,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:40,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:40,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160235380] [2022-11-18 19:31:40,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160235380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:40,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917748589] [2022-11-18 19:31:40,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:31:40,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:40,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:40,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:40,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:31:40,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:31:40,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:31:40,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:31:40,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:31:40,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:40,735 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:31:40,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917748589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:40,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:31:40,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 19:31:40,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421263720] [2022-11-18 19:31:40,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:40,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:31:40,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:40,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:31:40,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:31:40,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 266 [2022-11-18 19:31:40,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 244 transitions, 670 flow. Second operand has 18 states, 18 states have (on average 189.61111111111111) internal successors, (3413), 18 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:40,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:40,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 266 [2022-11-18 19:31:40,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:45,386 INFO L130 PetriNetUnfolder]: 10487/18863 cut-off events. [2022-11-18 19:31:45,387 INFO L131 PetriNetUnfolder]: For 2072/2072 co-relation queries the response was YES. [2022-11-18 19:31:45,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34117 conditions, 18863 events. 10487/18863 cut-off events. For 2072/2072 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 148183 event pairs, 6615 based on Foata normal form. 4/12560 useless extension candidates. Maximal degree in co-relation 28926. Up to 2359 conditions per place. [2022-11-18 19:31:45,561 INFO L137 encePairwiseOnDemand]: 244/266 looper letters, 219 selfloop transitions, 65 changer transitions 0/440 dead transitions. [2022-11-18 19:31:45,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 440 transitions, 1737 flow [2022-11-18 19:31:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 19:31:45,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 19:31:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 9416 transitions. [2022-11-18 19:31:45,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7224182906245205 [2022-11-18 19:31:45,584 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 9416 transitions. [2022-11-18 19:31:45,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 9416 transitions. [2022-11-18 19:31:45,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:45,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 9416 transitions. [2022-11-18 19:31:45,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 192.16326530612244) internal successors, (9416), 49 states have internal predecessors, (9416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:45,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 266.0) internal successors, (13300), 50 states have internal predecessors, (13300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:45,651 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 266.0) internal successors, (13300), 50 states have internal predecessors, (13300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:45,659 INFO L175 Difference]: Start difference. First operand has 240 places, 244 transitions, 670 flow. Second operand 49 states and 9416 transitions. [2022-11-18 19:31:45,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 440 transitions, 1737 flow [2022-11-18 19:31:45,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 440 transitions, 1694 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:31:45,669 INFO L231 Difference]: Finished difference. Result has 284 places, 267 transitions, 881 flow [2022-11-18 19:31:45,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=881, PETRI_PLACES=284, PETRI_TRANSITIONS=267} [2022-11-18 19:31:45,673 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 49 predicate places. [2022-11-18 19:31:45,674 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 267 transitions, 881 flow [2022-11-18 19:31:45,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 189.61111111111111) internal successors, (3413), 18 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:45,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:45,676 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] [2022-11-18 19:31:45,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:45,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fe2ea7-a83f-4837-b3d6-fde4f723ec29/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:45,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:31:45,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1959665964, now seen corresponding path program 1 times [2022-11-18 19:31:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:45,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849436825] [2022-11-18 19:31:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:45,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:46,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:46,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849436825] [2022-11-18 19:31:46,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849436825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:46,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:46,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:31:46,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132068784] [2022-11-18 19:31:46,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:46,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:31:46,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:46,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:31:46,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:31:46,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 266 [2022-11-18 19:31:46,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 267 transitions, 881 flow. Second operand has 6 states, 6 states have (on average 209.16666666666666) internal successors, (1255), 6 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:46,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:46,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 266 [2022-11-18 19:31:46,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:31:58,340 INFO L130 PetriNetUnfolder]: 46726/80190 cut-off events. [2022-11-18 19:31:58,341 INFO L131 PetriNetUnfolder]: For 1608/1664 co-relation queries the response was YES. [2022-11-18 19:31:58,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148909 conditions, 80190 events. 46726/80190 cut-off events. For 1608/1664 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 709397 event pairs, 28007 based on Foata normal form. 0/49852 useless extension candidates. Maximal degree in co-relation 148611. Up to 29624 conditions per place. [2022-11-18 19:31:58,942 INFO L137 encePairwiseOnDemand]: 259/266 looper letters, 66 selfloop transitions, 6 changer transitions 0/300 dead transitions. [2022-11-18 19:31:58,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 300 transitions, 1099 flow [2022-11-18 19:31:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:31:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:31:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1315 transitions. [2022-11-18 19:31:58,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8239348370927319 [2022-11-18 19:31:58,947 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1315 transitions. [2022-11-18 19:31:58,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1315 transitions. [2022-11-18 19:31:58,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:31:58,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1315 transitions. [2022-11-18 19:31:58,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.16666666666666) internal successors, (1315), 6 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:58,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:58,954 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:58,954 INFO L175 Difference]: Start difference. First operand has 284 places, 267 transitions, 881 flow. Second operand 6 states and 1315 transitions. [2022-11-18 19:31:58,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 300 transitions, 1099 flow [2022-11-18 19:31:58,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 300 transitions, 1016 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-11-18 19:31:58,962 INFO L231 Difference]: Finished difference. Result has 273 places, 266 transitions, 808 flow [2022-11-18 19:31:58,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=808, PETRI_PLACES=273, PETRI_TRANSITIONS=266} [2022-11-18 19:31:58,964 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 38 predicate places. [2022-11-18 19:31:58,964 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 266 transitions, 808 flow [2022-11-18 19:31:58,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.16666666666666) internal successors, (1255), 6 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:58,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:58,965 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] [2022-11-18 19:31:58,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:31:58,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:31:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:58,966 INFO L85 PathProgramCache]: Analyzing trace with hash 620103595, now seen corresponding path program 1 times [2022-11-18 19:31:58,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:58,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033672601] [2022-11-18 19:31:58,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:58,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:59,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:59,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033672601] [2022-11-18 19:31:59,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033672601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:59,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:59,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772627636] [2022-11-18 19:31:59,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:59,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:31:59,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 266 [2022-11-18 19:31:59,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 266 transitions, 808 flow. Second operand has 4 states, 4 states have (on average 216.75) internal successors, (867), 4 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:59,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:59,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 266 [2022-11-18 19:31:59,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:07,960 INFO L130 PetriNetUnfolder]: 36303/62620 cut-off events. [2022-11-18 19:32:07,960 INFO L131 PetriNetUnfolder]: For 3444/3444 co-relation queries the response was YES. [2022-11-18 19:32:08,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120797 conditions, 62620 events. 36303/62620 cut-off events. For 3444/3444 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 553471 event pairs, 9443 based on Foata normal form. 0/42334 useless extension candidates. Maximal degree in co-relation 120526. Up to 17515 conditions per place. [2022-11-18 19:32:08,409 INFO L137 encePairwiseOnDemand]: 261/266 looper letters, 76 selfloop transitions, 4 changer transitions 0/316 dead transitions. [2022-11-18 19:32:08,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 316 transitions, 1083 flow [2022-11-18 19:32:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:32:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:32:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1156 transitions. [2022-11-18 19:32:08,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.869172932330827 [2022-11-18 19:32:08,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1156 transitions. [2022-11-18 19:32:08,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1156 transitions. [2022-11-18 19:32:08,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:08,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1156 transitions. [2022-11-18 19:32:08,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 231.2) internal successors, (1156), 5 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:08,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:08,418 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:08,418 INFO L175 Difference]: Start difference. First operand has 273 places, 266 transitions, 808 flow. Second operand 5 states and 1156 transitions. [2022-11-18 19:32:08,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 316 transitions, 1083 flow [2022-11-18 19:32:08,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 316 transitions, 1071 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:32:08,464 INFO L231 Difference]: Finished difference. Result has 271 places, 265 transitions, 802 flow [2022-11-18 19:32:08,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=802, PETRI_PLACES=271, PETRI_TRANSITIONS=265} [2022-11-18 19:32:08,465 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 36 predicate places. [2022-11-18 19:32:08,465 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 265 transitions, 802 flow [2022-11-18 19:32:08,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 216.75) internal successors, (867), 4 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:08,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:08,466 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] [2022-11-18 19:32:08,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:32:08,467 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:32:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1507133313, now seen corresponding path program 1 times [2022-11-18 19:32:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:08,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239105484] [2022-11-18 19:32:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:08,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:08,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:08,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239105484] [2022-11-18 19:32:08,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239105484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:08,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:08,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:32:08,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969157252] [2022-11-18 19:32:08,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:08,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:32:08,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:08,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:32:08,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:32:08,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 266 [2022-11-18 19:32:08,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 265 transitions, 802 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:08,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:08,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 266 [2022-11-18 19:32:08,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand