./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN --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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- 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-6b4ec56 [2022-11-20 12:33:44,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:33:44,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:33:44,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:33:44,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:33:44,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:33:44,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:33:44,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:33:44,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:33:44,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:33:44,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:33:44,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:33:44,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:33:44,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:33:44,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:33:44,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:33:44,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:33:44,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:33:44,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:33:44,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:33:44,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:33:44,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:33:44,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:33:44,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:33:44,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:33:44,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:33:44,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:33:44,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:33:44,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:33:44,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:33:44,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:33:44,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:33:44,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:33:44,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:33:44,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:33:44,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:33:44,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:33:44,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:33:44,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:33:44,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:33:44,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:33:44,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:33:44,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:33:44,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:33:44,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:33:44,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:33:44,533 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:33:44,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:33:44,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:33:44,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:33:44,534 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:33:44,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:33:44,535 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:33:44,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:33:44,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:33:44,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:33:44,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:33:44,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:33:44,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:33:44,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:33:44,537 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:33:44,537 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:33:44,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:33:44,537 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:33:44,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:33:44,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:33:44,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:33:44,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:33:44,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:33:44,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:33:44,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:33:44,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:33:44,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:33:44,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:33:44,540 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:33:44,541 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:33:44,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:33:44,541 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_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-11-20 12:33:44,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:33:44,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:33:44,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:33:44,870 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:33:44,870 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:33:44,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-20 12:33:47,856 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:33:48,083 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:33:48,083 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-20 12:33:48,091 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/data/62f226945/94fca844da0c479d93befba0a9bc843e/FLAGb10e4787d [2022-11-20 12:33:48,102 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/data/62f226945/94fca844da0c479d93befba0a9bc843e [2022-11-20 12:33:48,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:33:48,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:33:48,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:33:48,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:33:48,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:33:48,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341dde76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48, skipping insertion in model container [2022-11-20 12:33:48,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:33:48,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:33:48,338 WARN L237 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_bcc27252-80f9-4112-bc27-80dd8a0b5284/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-20 12:33:48,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:33:48,353 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:33:48,390 WARN L237 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_bcc27252-80f9-4112-bc27-80dd8a0b5284/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-20 12:33:48,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:33:48,408 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:33:48,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48 WrapperNode [2022-11-20 12:33:48,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:33:48,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:33:48,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:33:48,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:33:48,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,495 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 492 [2022-11-20 12:33:48,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:33:48,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:33:48,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:33:48,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:33:48,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,534 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:33:48,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:33:48,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:33:48,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:33:48,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (1/1) ... [2022-11-20 12:33:48,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:33:48,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:48,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:33:48,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:33:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:33:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:33:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:33:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:33:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:33:48,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:33:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:33:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:33:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:33:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:33:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 12:33:48,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 12:33:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:33:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:33:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:33:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:33:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:33:48,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:33:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:33:48,655 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:33:48,853 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:33:48,855 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:33:49,518 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:33:49,918 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:33:49,918 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 12:33:49,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:33:49 BoogieIcfgContainer [2022-11-20 12:33:49,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:33:49,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:33:49,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:33:49,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:33:49,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:33:48" (1/3) ... [2022-11-20 12:33:49,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760d7ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:33:49, skipping insertion in model container [2022-11-20 12:33:49,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:48" (2/3) ... [2022-11-20 12:33:49,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760d7ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:33:49, skipping insertion in model container [2022-11-20 12:33:49,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:33:49" (3/3) ... [2022-11-20 12:33:49,932 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-11-20 12:33:49,942 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:33:49,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:33:49,952 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-20 12:33:49,952 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:33:50,119 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 12:33:50,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 371 places, 395 transitions, 822 flow [2022-11-20 12:33:50,365 INFO L130 PetriNetUnfolder]: 37/391 cut-off events. [2022-11-20 12:33:50,366 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 12:33:50,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 391 events. 37/391 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 403 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2022-11-20 12:33:50,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 395 transitions, 822 flow [2022-11-20 12:33:50,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 368 transitions, 757 flow [2022-11-20 12:33:50,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:33:50,410 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;@1b057898, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:33:50,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-20 12:33:50,429 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2022-11-20 12:33:50,429 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:33:50,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:50,431 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] [2022-11-20 12:33:50,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 12:33:50,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:50,437 INFO L85 PathProgramCache]: Analyzing trace with hash -206792586, now seen corresponding path program 1 times [2022-11-20 12:33:50,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:50,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567866603] [2022-11-20 12:33:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:50,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:50,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:50,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567866603] [2022-11-20 12:33:50,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567866603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:50,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:50,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:33:50,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185080900] [2022-11-20 12:33:50,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:50,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:33:50,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:33:50,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:33:50,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-20 12:33:50,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 368 transitions, 757 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:50,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:50,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-20 12:33:50,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:52,661 INFO L130 PetriNetUnfolder]: 2793/4191 cut-off events. [2022-11-20 12:33:52,661 INFO L131 PetriNetUnfolder]: For 418/418 co-relation queries the response was YES. [2022-11-20 12:33:52,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8124 conditions, 4191 events. 2793/4191 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18225 event pairs, 1192 based on Foata normal form. 632/3059 useless extension candidates. Maximal degree in co-relation 3423. Up to 1751 conditions per place. [2022-11-20 12:33:52,762 INFO L137 encePairwiseOnDemand]: 340/395 looper letters, 126 selfloop transitions, 19 changer transitions 8/406 dead transitions. [2022-11-20 12:33:52,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 406 transitions, 1144 flow [2022-11-20 12:33:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:33:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:33:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1626 transitions. [2022-11-20 12:33:52,786 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8232911392405063 [2022-11-20 12:33:52,786 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1626 transitions. [2022-11-20 12:33:52,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1626 transitions. [2022-11-20 12:33:52,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:52,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1626 transitions. [2022-11-20 12:33:52,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.2) internal successors, (1626), 5 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:52,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:52,814 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:52,816 INFO L175 Difference]: Start difference. First operand has 345 places, 368 transitions, 757 flow. Second operand 5 states and 1626 transitions. [2022-11-20 12:33:52,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 406 transitions, 1144 flow [2022-11-20 12:33:52,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 406 transitions, 1118 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:33:52,834 INFO L231 Difference]: Finished difference. Result has 333 places, 347 transitions, 813 flow [2022-11-20 12:33:52,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=813, PETRI_PLACES=333, PETRI_TRANSITIONS=347} [2022-11-20 12:33:52,842 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -12 predicate places. [2022-11-20 12:33:52,842 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 347 transitions, 813 flow [2022-11-20 12:33:52,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:52,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:52,843 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:33:52,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:33:52,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 12:33:52,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:52,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2017743730, now seen corresponding path program 1 times [2022-11-20 12:33:52,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:52,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852565269] [2022-11-20 12:33:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:52,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:53,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:53,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852565269] [2022-11-20 12:33:53,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852565269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:33:53,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392229259] [2022-11-20 12:33:53,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:53,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:53,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:53,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:53,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:33:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:53,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:33:53,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:53,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:33:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:53,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392229259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:33:53,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:33:53,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:33:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116868099] [2022-11-20 12:33:53,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:33:53,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:33:53,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:33:53,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:33:53,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-20 12:33:53,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 347 transitions, 813 flow. Second operand has 12 states, 12 states have (on average 287.6666666666667) internal successors, (3452), 12 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:53,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:53,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-20 12:33:53,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:57,484 INFO L130 PetriNetUnfolder]: 6981/10275 cut-off events. [2022-11-20 12:33:57,484 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-11-20 12:33:57,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19857 conditions, 10275 events. 6981/10275 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 50938 event pairs, 2980 based on Foata normal form. 12/5917 useless extension candidates. Maximal degree in co-relation 15272. Up to 1740 conditions per place. [2022-11-20 12:33:57,626 INFO L137 encePairwiseOnDemand]: 364/395 looper letters, 267 selfloop transitions, 84 changer transitions 0/604 dead transitions. [2022-11-20 12:33:57,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 604 transitions, 2167 flow [2022-11-20 12:33:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:33:57,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:33:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5493 transitions. [2022-11-20 12:33:57,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7725738396624473 [2022-11-20 12:33:57,638 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5493 transitions. [2022-11-20 12:33:57,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5493 transitions. [2022-11-20 12:33:57,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:57,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5493 transitions. [2022-11-20 12:33:57,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 305.1666666666667) internal successors, (5493), 18 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:57,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 395.0) internal successors, (7505), 19 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:57,672 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 395.0) internal successors, (7505), 19 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:57,672 INFO L175 Difference]: Start difference. First operand has 333 places, 347 transitions, 813 flow. Second operand 18 states and 5493 transitions. [2022-11-20 12:33:57,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 604 transitions, 2167 flow [2022-11-20 12:33:57,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 604 transitions, 2156 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:33:57,684 INFO L231 Difference]: Finished difference. Result has 345 places, 404 transitions, 1304 flow [2022-11-20 12:33:57,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1304, PETRI_PLACES=345, PETRI_TRANSITIONS=404} [2022-11-20 12:33:57,686 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 0 predicate places. [2022-11-20 12:33:57,686 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 404 transitions, 1304 flow [2022-11-20 12:33:57,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 287.6666666666667) internal successors, (3452), 12 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:57,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:57,689 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:33:57,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:33:57,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:57,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 12:33:57,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1874455016, now seen corresponding path program 1 times [2022-11-20 12:33:57,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:57,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811099421] [2022-11-20 12:33:57,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:57,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:58,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:58,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811099421] [2022-11-20 12:33:58,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811099421] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:33:58,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709887555] [2022-11-20 12:33:58,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:58,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:58,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:58,125 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:58,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:33:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:58,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:33:58,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:58,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:33:58,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709887555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:58,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:33:58,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:33:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732628440] [2022-11-20 12:33:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:58,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:33:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:33:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:33:58,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-20 12:33:58,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 404 transitions, 1304 flow. Second operand has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:58,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:58,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-20 12:33:58,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:01,361 INFO L130 PetriNetUnfolder]: 6981/10259 cut-off events. [2022-11-20 12:34:01,362 INFO L131 PetriNetUnfolder]: For 464/464 co-relation queries the response was YES. [2022-11-20 12:34:01,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19932 conditions, 10259 events. 6981/10259 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 50856 event pairs, 2980 based on Foata normal form. 16/5905 useless extension candidates. Maximal degree in co-relation 15888. Up to 6860 conditions per place. [2022-11-20 12:34:01,499 INFO L137 encePairwiseOnDemand]: 372/395 looper letters, 127 selfloop transitions, 59 changer transitions 0/439 dead transitions. [2022-11-20 12:34:01,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 439 transitions, 1686 flow [2022-11-20 12:34:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:01,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:34:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2140 transitions. [2022-11-20 12:34:01,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7739602169981917 [2022-11-20 12:34:01,505 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2140 transitions. [2022-11-20 12:34:01,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2140 transitions. [2022-11-20 12:34:01,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:01,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2140 transitions. [2022-11-20 12:34:01,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 305.7142857142857) internal successors, (2140), 7 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:01,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:01,517 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:01,517 INFO L175 Difference]: Start difference. First operand has 345 places, 404 transitions, 1304 flow. Second operand 7 states and 2140 transitions. [2022-11-20 12:34:01,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 439 transitions, 1686 flow [2022-11-20 12:34:01,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 439 transitions, 1528 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-20 12:34:01,528 INFO L231 Difference]: Finished difference. Result has 338 places, 388 transitions, 1156 flow [2022-11-20 12:34:01,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1156, PETRI_PLACES=338, PETRI_TRANSITIONS=388} [2022-11-20 12:34:01,530 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -7 predicate places. [2022-11-20 12:34:01,530 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 388 transitions, 1156 flow [2022-11-20 12:34:01,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:01,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:01,531 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:01,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:01,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:01,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 12:34:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:01,744 INFO L85 PathProgramCache]: Analyzing trace with hash -521269642, now seen corresponding path program 2 times [2022-11-20 12:34:01,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:01,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018396540] [2022-11-20 12:34:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:01,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:02,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:02,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018396540] [2022-11-20 12:34:02,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018396540] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:02,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358614254] [2022-11-20 12:34:02,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:34:02,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:02,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:02,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:02,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:34:02,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:34:02,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:34:02,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:34:02,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:34:02,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:34:02,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358614254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:02,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:34:02,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 12:34:02,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719619553] [2022-11-20 12:34:02,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:02,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:34:02,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:34:02,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:34:02,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 395 [2022-11-20 12:34:02,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 388 transitions, 1156 flow. Second operand has 18 states, 18 states have (on average 263.6111111111111) internal successors, (4745), 18 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:02,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 395 [2022-11-20 12:34:02,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:05,367 INFO L130 PetriNetUnfolder]: 2584/4759 cut-off events. [2022-11-20 12:34:05,368 INFO L131 PetriNetUnfolder]: For 420/420 co-relation queries the response was YES. [2022-11-20 12:34:05,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8653 conditions, 4759 events. 2584/4759 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 21344 event pairs, 693 based on Foata normal form. 8/3535 useless extension candidates. Maximal degree in co-relation 6474. Up to 644 conditions per place. [2022-11-20 12:34:05,433 INFO L137 encePairwiseOnDemand]: 353/395 looper letters, 333 selfloop transitions, 129 changer transitions 0/690 dead transitions. [2022-11-20 12:34:05,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 690 transitions, 2875 flow [2022-11-20 12:34:05,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 12:34:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 12:34:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 13252 transitions. [2022-11-20 12:34:05,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6846809609919917 [2022-11-20 12:34:05,459 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 13252 transitions. [2022-11-20 12:34:05,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 13252 transitions. [2022-11-20 12:34:05,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:05,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 13252 transitions. [2022-11-20 12:34:05,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 270.44897959183675) internal successors, (13252), 49 states have internal predecessors, (13252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:05,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 395.0) internal successors, (19750), 50 states have internal predecessors, (19750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:05,532 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 395.0) internal successors, (19750), 50 states have internal predecessors, (19750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:05,532 INFO L175 Difference]: Start difference. First operand has 338 places, 388 transitions, 1156 flow. Second operand 49 states and 13252 transitions. [2022-11-20 12:34:05,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 690 transitions, 2875 flow [2022-11-20 12:34:05,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 690 transitions, 2780 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:34:05,546 INFO L231 Difference]: Finished difference. Result has 378 places, 437 transitions, 1615 flow [2022-11-20 12:34:05,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1615, PETRI_PLACES=378, PETRI_TRANSITIONS=437} [2022-11-20 12:34:05,547 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 33 predicate places. [2022-11-20 12:34:05,547 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 437 transitions, 1615 flow [2022-11-20 12:34:05,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 263.6111111111111) internal successors, (4745), 18 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:05,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:05,550 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:05,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:05,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:05,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 12:34:05,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2060825617, now seen corresponding path program 1 times [2022-11-20 12:34:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:05,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745824525] [2022-11-20 12:34:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:05,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:06,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:06,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745824525] [2022-11-20 12:34:06,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745824525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:06,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816613129] [2022-11-20 12:34:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:06,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:06,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:06,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:06,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:34:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:06,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:34:06,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:06,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:06,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816613129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:06,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:34:06,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 12:34:06,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191357901] [2022-11-20 12:34:06,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:06,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:34:06,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:34:06,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:34:06,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-20 12:34:06,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 437 transitions, 1615 flow. Second operand has 32 states, 32 states have (on average 288.28125) internal successors, (9225), 32 states have internal predecessors, (9225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:06,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:06,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-20 12:34:06,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:12,345 INFO L130 PetriNetUnfolder]: 5536/10078 cut-off events. [2022-11-20 12:34:12,345 INFO L131 PetriNetUnfolder]: For 1581/1581 co-relation queries the response was YES. [2022-11-20 12:34:12,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18607 conditions, 10078 events. 5536/10078 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 51446 event pairs, 1485 based on Foata normal form. 24/7522 useless extension candidates. Maximal degree in co-relation 17803. Up to 1380 conditions per place. [2022-11-20 12:34:12,473 INFO L137 encePairwiseOnDemand]: 369/395 looper letters, 686 selfloop transitions, 218 changer transitions 0/1163 dead transitions. [2022-11-20 12:34:12,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1163 transitions, 5931 flow [2022-11-20 12:34:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 12:34:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 12:34:12,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 13468 transitions. [2022-11-20 12:34:12,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7749136939010357 [2022-11-20 12:34:12,502 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 13468 transitions. [2022-11-20 12:34:12,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 13468 transitions. [2022-11-20 12:34:12,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:12,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 13468 transitions. [2022-11-20 12:34:12,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 306.09090909090907) internal successors, (13468), 44 states have internal predecessors, (13468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:12,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 395.0) internal successors, (17775), 45 states have internal predecessors, (17775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:12,576 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 395.0) internal successors, (17775), 45 states have internal predecessors, (17775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:12,577 INFO L175 Difference]: Start difference. First operand has 378 places, 437 transitions, 1615 flow. Second operand 44 states and 13468 transitions. [2022-11-20 12:34:12,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1163 transitions, 5931 flow [2022-11-20 12:34:12,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1163 transitions, 5589 flow, removed 104 selfloop flow, removed 15 redundant places. [2022-11-20 12:34:12,606 INFO L231 Difference]: Finished difference. Result has 415 places, 563 transitions, 2827 flow [2022-11-20 12:34:12,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2827, PETRI_PLACES=415, PETRI_TRANSITIONS=563} [2022-11-20 12:34:12,608 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 70 predicate places. [2022-11-20 12:34:12,608 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 563 transitions, 2827 flow [2022-11-20 12:34:12,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 288.28125) internal successors, (9225), 32 states have internal predecessors, (9225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:12,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:12,611 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:12,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:12,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc27252-80f9-4112-bc27-80dd8a0b5284/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:12,818 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 12:34:12,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:12,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1095415206, now seen corresponding path program 1 times [2022-11-20 12:34:12,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:12,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815119211] [2022-11-20 12:34:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:12,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:12,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:12,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815119211] [2022-11-20 12:34:12,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815119211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:12,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:12,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:12,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353189471] [2022-11-20 12:34:12,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:12,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:12,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:12,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:12,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:12,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 395 [2022-11-20 12:34:12,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 563 transitions, 2827 flow. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:12,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:12,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 395 [2022-11-20 12:34:12,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:19,408 INFO L130 PetriNetUnfolder]: 16996/25273 cut-off events. [2022-11-20 12:34:19,408 INFO L131 PetriNetUnfolder]: For 1677/1692 co-relation queries the response was YES. [2022-11-20 12:34:19,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49764 conditions, 25273 events. 16996/25273 cut-off events. For 1677/1692 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 128962 event pairs, 5850 based on Foata normal form. 0/16708 useless extension candidates. Maximal degree in co-relation 49055. Up to 17431 conditions per place. [2022-11-20 12:34:19,687 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 50 selfloop transitions, 4 changer transitions 0/579 dead transitions. [2022-11-20 12:34:19,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 579 transitions, 2974 flow [2022-11-20 12:34:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:34:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1015 transitions. [2022-11-20 12:34:19,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8565400843881856 [2022-11-20 12:34:19,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1015 transitions. [2022-11-20 12:34:19,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1015 transitions. [2022-11-20 12:34:19,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:19,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1015 transitions. [2022-11-20 12:34:19,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:19,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:19,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:19,695 INFO L175 Difference]: Start difference. First operand has 415 places, 563 transitions, 2827 flow. Second operand 3 states and 1015 transitions. [2022-11-20 12:34:19,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 579 transitions, 2974 flow [2022-11-20 12:34:19,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 579 transitions, 2837 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-20 12:34:19,717 INFO L231 Difference]: Finished difference. Result has 404 places, 564 transitions, 2712 flow [2022-11-20 12:34:19,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2712, PETRI_PLACES=404, PETRI_TRANSITIONS=564} [2022-11-20 12:34:19,718 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 59 predicate places. [2022-11-20 12:34:19,719 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 564 transitions, 2712 flow [2022-11-20 12:34:19,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:19,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:19,719 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:19,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:34:19,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 12:34:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:19,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1468739999, now seen corresponding path program 1 times [2022-11-20 12:34:19,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:19,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433655275] [2022-11-20 12:34:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:19,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:34:19,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:19,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433655275] [2022-11-20 12:34:19,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433655275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:19,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:19,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:19,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533093742] [2022-11-20 12:34:19,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:19,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:19,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:19,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:19,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:19,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 395 [2022-11-20 12:34:19,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 564 transitions, 2712 flow. Second operand has 6 states, 6 states have (on average 289.1666666666667) internal successors, (1735), 6 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:19,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:19,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 395 [2022-11-20 12:34:19,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:25,217 INFO L130 PetriNetUnfolder]: 10336/20385 cut-off events. [2022-11-20 12:34:25,217 INFO L131 PetriNetUnfolder]: For 5653/5998 co-relation queries the response was YES. [2022-11-20 12:34:25,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38181 conditions, 20385 events. 10336/20385 cut-off events. For 5653/5998 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 136148 event pairs, 2805 based on Foata normal form. 660/15750 useless extension candidates. Maximal degree in co-relation 37375. Up to 8660 conditions per place. [2022-11-20 12:34:25,488 INFO L137 encePairwiseOnDemand]: 382/395 looper letters, 298 selfloop transitions, 24 changer transitions 0/632 dead transitions. [2022-11-20 12:34:25,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 632 transitions, 3676 flow [2022-11-20 12:34:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:34:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:34:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2664 transitions. [2022-11-20 12:34:25,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7493670886075949 [2022-11-20 12:34:25,504 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2664 transitions. [2022-11-20 12:34:25,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2664 transitions. [2022-11-20 12:34:25,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:25,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2664 transitions. [2022-11-20 12:34:25,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 296.0) internal successors, (2664), 9 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:25,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:25,531 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:25,532 INFO L175 Difference]: Start difference. First operand has 404 places, 564 transitions, 2712 flow. Second operand 9 states and 2664 transitions. [2022-11-20 12:34:25,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 632 transitions, 3676 flow [2022-11-20 12:34:25,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 632 transitions, 3664 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:34:25,568 INFO L231 Difference]: Finished difference. Result has 411 places, 565 transitions, 2765 flow [2022-11-20 12:34:25,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2765, PETRI_PLACES=411, PETRI_TRANSITIONS=565} [2022-11-20 12:34:25,570 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 66 predicate places. [2022-11-20 12:34:25,570 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 565 transitions, 2765 flow [2022-11-20 12:34:25,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 289.1666666666667) internal successors, (1735), 6 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:25,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:25,572 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:25,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:34:25,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 12:34:25,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:25,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1713697712, now seen corresponding path program 1 times [2022-11-20 12:34:25,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:25,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898831260] [2022-11-20 12:34:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:25,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:25,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:25,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898831260] [2022-11-20 12:34:25,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898831260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:25,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:25,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:25,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238036626] [2022-11-20 12:34:25,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:25,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:25,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:25,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:25,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:25,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 395 [2022-11-20 12:34:25,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 565 transitions, 2765 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:25,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:25,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 395 [2022-11-20 12:34:25,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:34,620 INFO L130 PetriNetUnfolder]: 22231/35460 cut-off events. [2022-11-20 12:34:34,620 INFO L131 PetriNetUnfolder]: For 5281/5311 co-relation queries the response was YES. [2022-11-20 12:34:34,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74114 conditions, 35460 events. 22231/35460 cut-off events. For 5281/5311 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 222571 event pairs, 5640 based on Foata normal form. 0/26535 useless extension candidates. Maximal degree in co-relation 73416. Up to 19952 conditions per place. [2022-11-20 12:34:35,053 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 53 selfloop transitions, 3 changer transitions 0/582 dead transitions. [2022-11-20 12:34:35,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 582 transitions, 2924 flow [2022-11-20 12:34:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:34:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1017 transitions. [2022-11-20 12:34:35,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8582278481012658 [2022-11-20 12:34:35,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1017 transitions. [2022-11-20 12:34:35,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1017 transitions. [2022-11-20 12:34:35,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:35,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1017 transitions. [2022-11-20 12:34:35,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:35,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:35,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:35,062 INFO L175 Difference]: Start difference. First operand has 411 places, 565 transitions, 2765 flow. Second operand 3 states and 1017 transitions. [2022-11-20 12:34:35,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 582 transitions, 2924 flow [2022-11-20 12:34:35,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 582 transitions, 2902 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:34:35,092 INFO L231 Difference]: Finished difference. Result has 412 places, 566 transitions, 2763 flow [2022-11-20 12:34:35,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2763, PETRI_PLACES=412, PETRI_TRANSITIONS=566} [2022-11-20 12:34:35,097 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 67 predicate places. [2022-11-20 12:34:35,097 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 566 transitions, 2763 flow [2022-11-20 12:34:35,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:35,099 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:35,100 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:35,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:34:35,100 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 12:34:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:35,101 INFO L85 PathProgramCache]: Analyzing trace with hash -95827372, now seen corresponding path program 1 times [2022-11-20 12:34:35,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:35,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502652973] [2022-11-20 12:34:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:35,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:35,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:35,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502652973] [2022-11-20 12:34:35,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502652973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:35,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:35,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:35,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221537108] [2022-11-20 12:34:35,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:35,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:35,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 395 [2022-11-20 12:34:35,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 566 transitions, 2763 flow. Second operand has 4 states, 4 states have (on average 328.75) internal successors, (1315), 4 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:35,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:35,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 395 [2022-11-20 12:34:35,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand