./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:13:45,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:13:45,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:13:45,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:13:45,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:13:45,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:13:45,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:13:45,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:13:45,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:13:45,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:13:45,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:13:45,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:13:45,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:13:45,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:13:45,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:13:45,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:13:45,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:13:45,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:13:45,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:13:45,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:13:45,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:13:45,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:13:45,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:13:45,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:13:45,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:13:45,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:13:45,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:13:45,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:13:45,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:13:45,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:13:45,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:13:45,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:13:45,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:13:45,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:13:45,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:13:45,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:13:45,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:13:45,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:13:45,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:13:45,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:13:45,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:13:45,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:13:45,572 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:13:45,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:13:45,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:13:45,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:13:45,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:13:45,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:13:45,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:13:45,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:13:45,576 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:13:45,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:13:45,577 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:13:45,578 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:13:45,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:13:45,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:13:45,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:13:45,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:13:45,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:13:45,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:13:45,580 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:13:45,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:13:45,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:13:45,580 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:13:45,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:13:45,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:13:45,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:13:45,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:13:45,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:13:45,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:13:45,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:13:45,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:13:45,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:13:45,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:13:45,596 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:13:45,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:13:45,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:13:45,597 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_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 [2022-11-16 11:13:45,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:13:45,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:13:45,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:13:45,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:13:45,999 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:13:46,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2022-11-16 11:13:46,093 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/data/1753be4f5/0cf114146fec4c1f90b45e2bf51aa170/FLAG09a643ef8 [2022-11-16 11:13:46,734 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:13:46,735 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2022-11-16 11:13:46,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/data/1753be4f5/0cf114146fec4c1f90b45e2bf51aa170/FLAG09a643ef8 [2022-11-16 11:13:47,033 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/data/1753be4f5/0cf114146fec4c1f90b45e2bf51aa170 [2022-11-16 11:13:47,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:13:47,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:13:47,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:13:47,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:13:47,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:13:47,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773bdf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47, skipping insertion in model container [2022-11-16 11:13:47,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:13:47,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:13:47,340 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2022-11-16 11:13:47,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:13:47,359 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:13:47,428 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2022-11-16 11:13:47,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:13:47,470 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:13:47,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47 WrapperNode [2022-11-16 11:13:47,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:13:47,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:13:47,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:13:47,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:13:47,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,531 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 347 [2022-11-16 11:13:47,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:13:47,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:13:47,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:13:47,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:13:47,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:13:47,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:13:47,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:13:47,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:13:47,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (1/1) ... [2022-11-16 11:13:47,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:13:47,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:47,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:13:47,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:13:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:13:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:13:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:13:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:13:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:13:47,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:13:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:13:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:13:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:13:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:13:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:13:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:13:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:13:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:13:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:13:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:13:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:13:47,676 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:13:47,847 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:13:47,849 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:13:48,565 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:13:49,018 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:13:49,018 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 11:13:49,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:13:49 BoogieIcfgContainer [2022-11-16 11:13:49,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:13:49,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:13:49,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:13:49,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:13:49,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:13:47" (1/3) ... [2022-11-16 11:13:49,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e66ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:49, skipping insertion in model container [2022-11-16 11:13:49,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:47" (2/3) ... [2022-11-16 11:13:49,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e66ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:49, skipping insertion in model container [2022-11-16 11:13:49,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:13:49" (3/3) ... [2022-11-16 11:13:49,038 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2022-11-16 11:13:49,053 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:13:49,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:13:49,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-16 11:13:49,066 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:13:49,275 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:13:49,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 312 transitions, 648 flow [2022-11-16 11:13:49,554 INFO L130 PetriNetUnfolder]: 22/309 cut-off events. [2022-11-16 11:13:49,556 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:13:49,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 309 events. 22/309 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 349 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2022-11-16 11:13:49,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 312 transitions, 648 flow [2022-11-16 11:13:49,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 288 transitions, 591 flow [2022-11-16 11:13:49,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:13:49,622 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;@547c9f00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:13:49,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-16 11:13:49,671 INFO L130 PetriNetUnfolder]: 3/78 cut-off events. [2022-11-16 11:13:49,672 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:13:49,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:49,677 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] [2022-11-16 11:13:49,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:13:49,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:49,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1380485192, now seen corresponding path program 1 times [2022-11-16 11:13:49,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:49,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154133045] [2022-11-16 11:13:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:49,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:50,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:50,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154133045] [2022-11-16 11:13:50,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154133045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:50,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:50,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:13:50,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27520773] [2022-11-16 11:13:50,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:50,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:13:50,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:50,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:13:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:13:50,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-11-16 11:13:50,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 288 transitions, 591 flow. Second operand has 4 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:50,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:50,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-11-16 11:13:50,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:52,711 INFO L130 PetriNetUnfolder]: 2371/5576 cut-off events. [2022-11-16 11:13:52,712 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2022-11-16 11:13:52,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9253 conditions, 5576 events. 2371/5576 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 45924 event pairs, 1440 based on Foata normal form. 546/3442 useless extension candidates. Maximal degree in co-relation 4348. Up to 1674 conditions per place. [2022-11-16 11:13:52,826 INFO L137 encePairwiseOnDemand]: 270/312 looper letters, 94 selfloop transitions, 14 changer transitions 7/315 dead transitions. [2022-11-16 11:13:52,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 315 transitions, 876 flow [2022-11-16 11:13:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:13:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:13:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1292 transitions. [2022-11-16 11:13:52,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8282051282051283 [2022-11-16 11:13:52,856 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1292 transitions. [2022-11-16 11:13:52,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1292 transitions. [2022-11-16 11:13:52,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:52,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1292 transitions. [2022-11-16 11:13:52,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 258.4) internal successors, (1292), 5 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:52,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:52,888 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:52,890 INFO L175 Difference]: Start difference. First operand has 277 places, 288 transitions, 591 flow. Second operand 5 states and 1292 transitions. [2022-11-16 11:13:52,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 315 transitions, 876 flow [2022-11-16 11:13:52,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 315 transitions, 858 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:13:52,911 INFO L231 Difference]: Finished difference. Result has 272 places, 270 transitions, 628 flow [2022-11-16 11:13:52,914 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=628, PETRI_PLACES=272, PETRI_TRANSITIONS=270} [2022-11-16 11:13:52,918 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, -5 predicate places. [2022-11-16 11:13:52,919 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 270 transitions, 628 flow [2022-11-16 11:13:52,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:52,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:52,921 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] [2022-11-16 11:13:52,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:13:52,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:13:52,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash 32794271, now seen corresponding path program 1 times [2022-11-16 11:13:52,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:52,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099659762] [2022-11-16 11:13:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:52,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:53,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:53,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099659762] [2022-11-16 11:13:53,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099659762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:53,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275530625] [2022-11-16 11:13:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:53,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:53,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:53,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:53,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:13:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:53,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:13:53,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:53,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:13:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:53,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275530625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:13:53,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:13:53,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:13:53,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200840110] [2022-11-16 11:13:53,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:13:53,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:13:53,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:53,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:13:53,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:13:53,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-11-16 11:13:53,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 270 transitions, 628 flow. Second operand has 12 states, 12 states have (on average 230.66666666666666) internal successors, (2768), 12 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:53,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:53,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-11-16 11:13:53,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:58,534 INFO L130 PetriNetUnfolder]: 5926/13773 cut-off events. [2022-11-16 11:13:58,534 INFO L131 PetriNetUnfolder]: For 323/323 co-relation queries the response was YES. [2022-11-16 11:13:58,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22711 conditions, 13773 events. 5926/13773 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 124631 event pairs, 3600 based on Foata normal form. 9/7117 useless extension candidates. Maximal degree in co-relation 17800. Up to 1665 conditions per place. [2022-11-16 11:13:58,698 INFO L137 encePairwiseOnDemand]: 289/312 looper letters, 199 selfloop transitions, 62 changer transitions 0/461 dead transitions. [2022-11-16 11:13:58,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 461 transitions, 1634 flow [2022-11-16 11:13:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:13:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:13:58,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4374 transitions. [2022-11-16 11:13:58,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7788461538461539 [2022-11-16 11:13:58,713 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4374 transitions. [2022-11-16 11:13:58,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4374 transitions. [2022-11-16 11:13:58,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:58,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4374 transitions. [2022-11-16 11:13:58,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 243.0) internal successors, (4374), 18 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:58,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 312.0) internal successors, (5928), 19 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:58,753 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 312.0) internal successors, (5928), 19 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:58,753 INFO L175 Difference]: Start difference. First operand has 272 places, 270 transitions, 628 flow. Second operand 18 states and 4374 transitions. [2022-11-16 11:13:58,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 461 transitions, 1634 flow [2022-11-16 11:13:58,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 461 transitions, 1626 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:13:58,772 INFO L231 Difference]: Finished difference. Result has 285 places, 312 transitions, 990 flow [2022-11-16 11:13:58,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=990, PETRI_PLACES=285, PETRI_TRANSITIONS=312} [2022-11-16 11:13:58,774 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 8 predicate places. [2022-11-16 11:13:58,774 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 312 transitions, 990 flow [2022-11-16 11:13:58,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 230.66666666666666) internal successors, (2768), 12 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:58,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:58,778 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] [2022-11-16 11:13:58,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:58,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:58,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:13:58,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:58,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1016623460, now seen corresponding path program 1 times [2022-11-16 11:13:58,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:58,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136207671] [2022-11-16 11:13:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:58,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:59,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:59,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136207671] [2022-11-16 11:13:59,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136207671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:59,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076544212] [2022-11-16 11:13:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:59,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:59,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:59,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:59,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:13:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:59,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:13:59,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:59,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:13:59,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076544212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:59,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:13:59,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:13:59,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742652719] [2022-11-16 11:13:59,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:59,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:13:59,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:13:59,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:13:59,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-11-16 11:13:59,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 312 transitions, 990 flow. Second operand has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:59,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:59,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-11-16 11:13:59,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:03,415 INFO L130 PetriNetUnfolder]: 5926/13761 cut-off events. [2022-11-16 11:14:03,416 INFO L131 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2022-11-16 11:14:03,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22767 conditions, 13761 events. 5926/13761 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 125003 event pairs, 3600 based on Foata normal form. 12/7108 useless extension candidates. Maximal degree in co-relation 18170. Up to 6588 conditions per place. [2022-11-16 11:14:03,554 INFO L137 encePairwiseOnDemand]: 295/312 looper letters, 95 selfloop transitions, 43 changer transitions 0/338 dead transitions. [2022-11-16 11:14:03,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 338 transitions, 1273 flow [2022-11-16 11:14:03,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:14:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:14:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1704 transitions. [2022-11-16 11:14:03,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7802197802197802 [2022-11-16 11:14:03,561 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1704 transitions. [2022-11-16 11:14:03,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1704 transitions. [2022-11-16 11:14:03,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:03,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1704 transitions. [2022-11-16 11:14:03,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 243.42857142857142) internal successors, (1704), 7 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:03,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:03,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:03,576 INFO L175 Difference]: Start difference. First operand has 285 places, 312 transitions, 990 flow. Second operand 7 states and 1704 transitions. [2022-11-16 11:14:03,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 338 transitions, 1273 flow [2022-11-16 11:14:03,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 338 transitions, 1157 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 11:14:03,590 INFO L231 Difference]: Finished difference. Result has 279 places, 300 transitions, 879 flow [2022-11-16 11:14:03,591 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=879, PETRI_PLACES=279, PETRI_TRANSITIONS=300} [2022-11-16 11:14:03,592 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 2 predicate places. [2022-11-16 11:14:03,592 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 300 transitions, 879 flow [2022-11-16 11:14:03,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:03,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:03,594 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] [2022-11-16 11:14:03,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:14:03,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:03,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:14:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1362244616, now seen corresponding path program 2 times [2022-11-16 11:14:03,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:03,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190477688] [2022-11-16 11:14:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:03,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:04,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:04,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190477688] [2022-11-16 11:14:04,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190477688] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:04,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265738787] [2022-11-16 11:14:04,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:14:04,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:04,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:04,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:04,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:14:04,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:14:04,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:14:04,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:14:04,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:14:04,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:14:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:14:05,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265738787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:14:05,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:14:05,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:14:05,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580052084] [2022-11-16 11:14:05,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:14:05,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:14:05,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:05,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:14:05,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:14:05,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 312 [2022-11-16 11:14:05,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 300 transitions, 879 flow. Second operand has 18 states, 18 states have (on average 211.61111111111111) internal successors, (3809), 18 states have internal predecessors, (3809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:05,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:05,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 312 [2022-11-16 11:14:05,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:09,780 INFO L130 PetriNetUnfolder]: 4642/12366 cut-off events. [2022-11-16 11:14:09,781 INFO L131 PetriNetUnfolder]: For 574/574 co-relation queries the response was YES. [2022-11-16 11:14:09,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19896 conditions, 12366 events. 4642/12366 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 112008 event pairs, 3108 based on Foata normal form. 6/7388 useless extension candidates. Maximal degree in co-relation 16494. Up to 990 conditions per place. [2022-11-16 11:14:09,894 INFO L137 encePairwiseOnDemand]: 281/312 looper letters, 255 selfloop transitions, 97 changer transitions 0/532 dead transitions. [2022-11-16 11:14:09,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 532 transitions, 2184 flow [2022-11-16 11:14:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 11:14:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 11:14:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10571 transitions. [2022-11-16 11:14:09,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6914573521716378 [2022-11-16 11:14:09,923 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10571 transitions. [2022-11-16 11:14:09,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10571 transitions. [2022-11-16 11:14:09,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:09,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10571 transitions. [2022-11-16 11:14:09,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 215.73469387755102) internal successors, (10571), 49 states have internal predecessors, (10571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:09,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 312.0) internal successors, (15600), 50 states have internal predecessors, (15600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:10,010 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 312.0) internal successors, (15600), 50 states have internal predecessors, (15600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:10,017 INFO L175 Difference]: Start difference. First operand has 279 places, 300 transitions, 879 flow. Second operand 49 states and 10571 transitions. [2022-11-16 11:14:10,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 532 transitions, 2184 flow [2022-11-16 11:14:10,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 532 transitions, 2115 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:14:10,036 INFO L231 Difference]: Finished difference. Result has 322 places, 337 transitions, 1216 flow [2022-11-16 11:14:10,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1216, PETRI_PLACES=322, PETRI_TRANSITIONS=337} [2022-11-16 11:14:10,041 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 45 predicate places. [2022-11-16 11:14:10,042 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 337 transitions, 1216 flow [2022-11-16 11:14:10,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 211.61111111111111) internal successors, (3809), 18 states have internal predecessors, (3809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:10,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:10,045 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:10,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:14:10,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:10,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:14:10,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:10,253 INFO L85 PathProgramCache]: Analyzing trace with hash -249847238, now seen corresponding path program 1 times [2022-11-16 11:14:10,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:10,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053840496] [2022-11-16 11:14:10,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:10,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:10,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:10,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053840496] [2022-11-16 11:14:10,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053840496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:10,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778436694] [2022-11-16 11:14:10,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:10,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:10,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:10,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:10,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:14:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:11,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:14:11,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:11,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:14:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:11,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778436694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:14:11,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:14:11,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-16 11:14:11,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184833032] [2022-11-16 11:14:11,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:14:11,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:14:11,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:11,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:14:11,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:14:11,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-11-16 11:14:11,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 337 transitions, 1216 flow. Second operand has 32 states, 32 states have (on average 231.28125) internal successors, (7401), 32 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:11,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:11,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-11-16 11:14:11,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:21,056 INFO L130 PetriNetUnfolder]: 9946/26405 cut-off events. [2022-11-16 11:14:21,056 INFO L131 PetriNetUnfolder]: For 1705/1705 co-relation queries the response was YES. [2022-11-16 11:14:21,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42689 conditions, 26405 events. 9946/26405 cut-off events. For 1705/1705 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 249298 event pairs, 6660 based on Foata normal form. 16/15786 useless extension candidates. Maximal degree in co-relation 41989. Up to 1455 conditions per place. [2022-11-16 11:14:21,257 INFO L137 encePairwiseOnDemand]: 293/312 looper letters, 533 selfloop transitions, 160 changer transitions 0/899 dead transitions. [2022-11-16 11:14:21,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 899 transitions, 4511 flow [2022-11-16 11:14:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:14:21,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 11:14:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10741 transitions. [2022-11-16 11:14:21,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7824155011655012 [2022-11-16 11:14:21,280 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10741 transitions. [2022-11-16 11:14:21,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10741 transitions. [2022-11-16 11:14:21,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:21,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10741 transitions. [2022-11-16 11:14:21,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 244.11363636363637) internal successors, (10741), 44 states have internal predecessors, (10741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:21,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 312.0) internal successors, (14040), 45 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:21,339 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 312.0) internal successors, (14040), 45 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:21,339 INFO L175 Difference]: Start difference. First operand has 322 places, 337 transitions, 1216 flow. Second operand 44 states and 10741 transitions. [2022-11-16 11:14:21,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 899 transitions, 4511 flow [2022-11-16 11:14:21,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 899 transitions, 4257 flow, removed 73 selfloop flow, removed 15 redundant places. [2022-11-16 11:14:21,364 INFO L231 Difference]: Finished difference. Result has 359 places, 430 transitions, 2103 flow [2022-11-16 11:14:21,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2103, PETRI_PLACES=359, PETRI_TRANSITIONS=430} [2022-11-16 11:14:21,368 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 82 predicate places. [2022-11-16 11:14:21,369 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 430 transitions, 2103 flow [2022-11-16 11:14:21,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 231.28125) internal successors, (7401), 32 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:21,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:21,372 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:21,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:14:21,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1115957b-af75-4590-b220-d773092815d5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:21,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:14:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2002558662, now seen corresponding path program 1 times [2022-11-16 11:14:21,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:21,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759748184] [2022-11-16 11:14:21,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:21,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:21,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:21,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759748184] [2022-11-16 11:14:21,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759748184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:21,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:21,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:14:21,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188858640] [2022-11-16 11:14:21,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:21,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:14:21,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:21,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:14:21,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:14:21,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 312 [2022-11-16 11:14:21,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 430 transitions, 2103 flow. Second operand has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:21,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:21,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 312 [2022-11-16 11:14:21,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:30,140 INFO L130 PetriNetUnfolder]: 11506/29045 cut-off events. [2022-11-16 11:14:30,141 INFO L131 PetriNetUnfolder]: For 2156/2156 co-relation queries the response was YES. [2022-11-16 11:14:30,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47795 conditions, 29045 events. 11506/29045 cut-off events. For 2156/2156 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 278916 event pairs, 4485 based on Foata normal form. 645/18305 useless extension candidates. Maximal degree in co-relation 47187. Up to 10848 conditions per place. [2022-11-16 11:14:30,386 INFO L137 encePairwiseOnDemand]: 306/312 looper letters, 38 selfloop transitions, 4 changer transitions 0/445 dead transitions. [2022-11-16 11:14:30,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 445 transitions, 2219 flow [2022-11-16 11:14:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:14:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:14:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 815 transitions. [2022-11-16 11:14:30,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8707264957264957 [2022-11-16 11:14:30,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 815 transitions. [2022-11-16 11:14:30,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 815 transitions. [2022-11-16 11:14:30,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:30,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 815 transitions. [2022-11-16 11:14:30,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:30,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:30,394 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:30,394 INFO L175 Difference]: Start difference. First operand has 359 places, 430 transitions, 2103 flow. Second operand 3 states and 815 transitions. [2022-11-16 11:14:30,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 445 transitions, 2219 flow [2022-11-16 11:14:30,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 445 transitions, 2117 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-16 11:14:30,414 INFO L231 Difference]: Finished difference. Result has 347 places, 431 transitions, 2021 flow [2022-11-16 11:14:30,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2021, PETRI_PLACES=347, PETRI_TRANSITIONS=431} [2022-11-16 11:14:30,416 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 70 predicate places. [2022-11-16 11:14:30,417 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 431 transitions, 2021 flow [2022-11-16 11:14:30,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:30,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:30,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:30,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:14:30,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:14:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:30,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2058255941, now seen corresponding path program 1 times [2022-11-16 11:14:30,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:30,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345048995] [2022-11-16 11:14:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:30,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:30,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:30,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345048995] [2022-11-16 11:14:30,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345048995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:30,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:30,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:14:30,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328244787] [2022-11-16 11:14:30,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:30,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:14:30,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:30,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:14:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:14:30,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 312 [2022-11-16 11:14:30,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 431 transitions, 2021 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:30,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:30,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 312 [2022-11-16 11:14:30,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:38,053 INFO L130 PetriNetUnfolder]: 8386/29390 cut-off events. [2022-11-16 11:14:38,053 INFO L131 PetriNetUnfolder]: For 3085/3085 co-relation queries the response was YES. [2022-11-16 11:14:38,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46027 conditions, 29390 events. 8386/29390 cut-off events. For 3085/3085 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 320351 event pairs, 1800 based on Foata normal form. 195/19775 useless extension candidates. Maximal degree in co-relation 45432. Up to 13068 conditions per place. [2022-11-16 11:14:38,324 INFO L137 encePairwiseOnDemand]: 308/312 looper letters, 33 selfloop transitions, 3 changer transitions 0/442 dead transitions. [2022-11-16 11:14:38,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 442 transitions, 2123 flow [2022-11-16 11:14:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:14:38,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:14:38,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 815 transitions. [2022-11-16 11:14:38,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8707264957264957 [2022-11-16 11:14:38,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 815 transitions. [2022-11-16 11:14:38,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 815 transitions. [2022-11-16 11:14:38,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:38,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 815 transitions. [2022-11-16 11:14:38,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:38,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:38,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:38,334 INFO L175 Difference]: Start difference. First operand has 347 places, 431 transitions, 2021 flow. Second operand 3 states and 815 transitions. [2022-11-16 11:14:38,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 442 transitions, 2123 flow [2022-11-16 11:14:38,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 442 transitions, 2118 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:14:38,361 INFO L231 Difference]: Finished difference. Result has 349 places, 433 transitions, 2036 flow [2022-11-16 11:14:38,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2036, PETRI_PLACES=349, PETRI_TRANSITIONS=433} [2022-11-16 11:14:38,363 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 72 predicate places. [2022-11-16 11:14:38,363 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 433 transitions, 2036 flow [2022-11-16 11:14:38,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:38,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:38,364 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:38,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:14:38,365 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:14:38,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:38,366 INFO L85 PathProgramCache]: Analyzing trace with hash -873291914, now seen corresponding path program 1 times [2022-11-16 11:14:38,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:38,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770162946] [2022-11-16 11:14:38,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:38,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:38,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:38,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770162946] [2022-11-16 11:14:38,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770162946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:38,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:38,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:14:38,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291127205] [2022-11-16 11:14:38,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:38,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:14:38,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:38,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:14:38,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:14:38,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 312 [2022-11-16 11:14:38,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 433 transitions, 2036 flow. Second operand has 6 states, 6 states have (on average 231.16666666666666) internal successors, (1387), 6 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:38,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:38,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 312 [2022-11-16 11:14:38,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand