./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:56:57,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:56:57,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:56:57,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:56:57,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:56:57,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:56:57,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:56:57,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:56:57,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:56:57,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:56:57,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:56:57,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:56:57,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:56:57,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:56:57,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:56:57,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:56:57,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:56:57,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:56:57,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:56:57,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:56:57,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:56:57,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:56:57,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:56:57,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:56:57,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:56:57,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:56:57,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:56:57,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:56:57,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:56:57,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:56:57,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:56:57,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:56:57,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:56:57,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:56:57,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:56:57,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:56:57,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:56:57,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:56:57,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:56:57,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:56:57,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:56:57,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:56:57,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:56:57,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:56:57,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:56:57,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:56:57,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:56:57,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:56:57,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:56:57,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:56:57,622 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:56:57,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:56:57,623 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:56:57,623 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:56:57,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:56:57,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:56:57,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:56:57,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:56:57,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:56:57,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:56:57,625 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:56:57,625 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:56:57,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:56:57,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:56:57,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:56:57,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:56:57,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:56:57,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:56:57,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:56:57,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:56:57,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:56:57,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:56:57,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:56:57,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:56:57,629 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:56:57,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:56:57,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:56:57,630 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_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 [2022-11-18 20:56:57,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:56:57,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:56:57,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:56:57,966 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:56:57,967 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:56:57,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2022-11-18 20:56:58,060 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/data/ff3a76511/c35a642f65234de79e3b1248ed78f1d5/FLAGef08df8da [2022-11-18 20:56:58,644 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:56:58,644 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2022-11-18 20:56:58,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/data/ff3a76511/c35a642f65234de79e3b1248ed78f1d5/FLAGef08df8da [2022-11-18 20:56:58,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/data/ff3a76511/c35a642f65234de79e3b1248ed78f1d5 [2022-11-18 20:56:58,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:56:58,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:56:58,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:56:58,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:56:58,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:56:58,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:58" (1/1) ... [2022-11-18 20:56:58,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d77701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:58, skipping insertion in model container [2022-11-18 20:56:58,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:58" (1/1) ... [2022-11-18 20:56:59,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:56:59,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:56:59,258 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2022-11-18 20:56:59,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:56:59,272 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:56:59,295 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2022-11-18 20:56:59,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:56:59,313 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:56:59,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59 WrapperNode [2022-11-18 20:56:59,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:56:59,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:56:59,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:56:59,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:56:59,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (1/1) ... [2022-11-18 20:56:59,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (1/1) ... [2022-11-18 20:56:59,356 INFO L138 Inliner]: procedures = 25, calls = 50, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 176 [2022-11-18 20:56:59,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:56:59,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:56:59,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:56:59,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:56:59,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (1/1) ... [2022-11-18 20:56:59,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (1/1) ... [2022-11-18 20:56:59,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (1/1) ... [2022-11-18 20:56:59,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (1/1) ... [2022-11-18 20:56:59,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (1/1) ... [2022-11-18 20:56:59,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (1/1) ... [2022-11-18 20:56:59,385 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (1/1) ... [2022-11-18 20:56:59,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (1/1) ... [2022-11-18 20:56:59,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:56:59,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:56:59,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:56:59,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:56:59,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (1/1) ... [2022-11-18 20:56:59,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:56:59,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:59,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:59,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:56:59,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:56:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:56:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:56:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:56:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:56:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:56:59,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:56:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:56:59,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:56:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:56:59,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:56:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:56:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:56:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:56:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:56:59,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:56:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:56:59,476 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:56:59,583 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:56:59,585 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:56:59,989 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:57:00,191 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:57:00,191 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:57:00,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:57:00 BoogieIcfgContainer [2022-11-18 20:57:00,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:57:00,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:57:00,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:57:00,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:57:00,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:56:58" (1/3) ... [2022-11-18 20:57:00,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cc0f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:57:00, skipping insertion in model container [2022-11-18 20:57:00,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:59" (2/3) ... [2022-11-18 20:57:00,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cc0f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:57:00, skipping insertion in model container [2022-11-18 20:57:00,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:57:00" (3/3) ... [2022-11-18 20:57:00,209 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2022-11-18 20:57:00,218 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:57:00,229 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:57:00,229 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 20:57:00,229 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:57:00,372 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:57:00,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 169 transitions, 362 flow [2022-11-18 20:57:00,607 INFO L130 PetriNetUnfolder]: 11/166 cut-off events. [2022-11-18 20:57:00,610 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:57:00,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 11/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 136. Up to 3 conditions per place. [2022-11-18 20:57:00,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 169 transitions, 362 flow [2022-11-18 20:57:00,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 142 transitions, 296 flow [2022-11-18 20:57:00,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:57:00,653 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;@1f5a8eba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:57:00,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 20:57:00,698 INFO L130 PetriNetUnfolder]: 3/70 cut-off events. [2022-11-18 20:57:00,698 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:57:00,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:00,700 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] [2022-11-18 20:57:00,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:00,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:00,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1063739240, now seen corresponding path program 1 times [2022-11-18 20:57:00,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:00,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665648248] [2022-11-18 20:57:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:00,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:01,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:01,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665648248] [2022-11-18 20:57:01,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665648248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:01,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:01,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:57:01,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76996295] [2022-11-18 20:57:01,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:01,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:57:01,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:01,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:57:01,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:57:01,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 169 [2022-11-18 20:57:01,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 142 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 136.5) internal successors, (546), 4 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:01,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:01,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 169 [2022-11-18 20:57:01,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:01,623 INFO L130 PetriNetUnfolder]: 161/592 cut-off events. [2022-11-18 20:57:01,623 INFO L131 PetriNetUnfolder]: For 98/98 co-relation queries the response was YES. [2022-11-18 20:57:01,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 592 events. 161/592 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2851 event pairs, 72 based on Foata normal form. 64/484 useless extension candidates. Maximal degree in co-relation 482. Up to 124 conditions per place. [2022-11-18 20:57:01,634 INFO L137 encePairwiseOnDemand]: 155/169 looper letters, 36 selfloop transitions, 4 changer transitions 3/152 dead transitions. [2022-11-18 20:57:01,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 152 transitions, 408 flow [2022-11-18 20:57:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:57:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:57:01,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 731 transitions. [2022-11-18 20:57:01,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8650887573964497 [2022-11-18 20:57:01,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 731 transitions. [2022-11-18 20:57:01,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 731 transitions. [2022-11-18 20:57:01,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:01,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 731 transitions. [2022-11-18 20:57:01,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:01,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:01,673 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:01,676 INFO L175 Difference]: Start difference. First operand has 142 places, 142 transitions, 296 flow. Second operand 5 states and 731 transitions. [2022-11-18 20:57:01,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 152 transitions, 408 flow [2022-11-18 20:57:01,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 152 transitions, 396 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:57:01,686 INFO L231 Difference]: Finished difference. Result has 143 places, 134 transitions, 298 flow [2022-11-18 20:57:01,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=143, PETRI_TRANSITIONS=134} [2022-11-18 20:57:01,693 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 1 predicate places. [2022-11-18 20:57:01,694 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 134 transitions, 298 flow [2022-11-18 20:57:01,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.5) internal successors, (546), 4 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:01,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:01,695 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] [2022-11-18 20:57:01,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:57:01,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:01,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:01,696 INFO L85 PathProgramCache]: Analyzing trace with hash -58673448, now seen corresponding path program 1 times [2022-11-18 20:57:01,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:01,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774955855] [2022-11-18 20:57:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:01,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:01,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:01,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774955855] [2022-11-18 20:57:01,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774955855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:57:01,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627201144] [2022-11-18 20:57:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:01,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:01,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:01,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:01,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:57:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:02,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:57:02,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:02,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:57:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:02,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627201144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:57:02,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:57:02,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:57:02,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893099752] [2022-11-18 20:57:02,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:57:02,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:57:02,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:02,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:57:02,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:57:02,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 169 [2022-11-18 20:57:02,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 134 transitions, 298 flow. Second operand has 12 states, 12 states have (on average 137.66666666666666) internal successors, (1652), 12 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:02,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:02,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 169 [2022-11-18 20:57:02,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:03,036 INFO L130 PetriNetUnfolder]: 401/1388 cut-off events. [2022-11-18 20:57:03,036 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-11-18 20:57:03,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 1388 events. 401/1388 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8581 event pairs, 180 based on Foata normal form. 3/976 useless extension candidates. Maximal degree in co-relation 1712. Up to 119 conditions per place. [2022-11-18 20:57:03,053 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 78 selfloop transitions, 18 changer transitions 0/205 dead transitions. [2022-11-18 20:57:03,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 205 transitions, 678 flow [2022-11-18 20:57:03,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:57:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:57:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2529 transitions. [2022-11-18 20:57:03,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8313609467455622 [2022-11-18 20:57:03,095 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2529 transitions. [2022-11-18 20:57:03,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2529 transitions. [2022-11-18 20:57:03,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:03,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2529 transitions. [2022-11-18 20:57:03,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 140.5) internal successors, (2529), 18 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:03,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:03,114 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:03,114 INFO L175 Difference]: Start difference. First operand has 143 places, 134 transitions, 298 flow. Second operand 18 states and 2529 transitions. [2022-11-18 20:57:03,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 205 transitions, 678 flow [2022-11-18 20:57:03,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 205 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:57:03,125 INFO L231 Difference]: Finished difference. Result has 160 places, 146 transitions, 402 flow [2022-11-18 20:57:03,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=402, PETRI_PLACES=160, PETRI_TRANSITIONS=146} [2022-11-18 20:57:03,126 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 18 predicate places. [2022-11-18 20:57:03,126 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 402 flow [2022-11-18 20:57:03,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 137.66666666666666) internal successors, (1652), 12 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:03,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:03,129 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] [2022-11-18 20:57:03,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:57:03,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:03,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:03,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1818876504, now seen corresponding path program 1 times [2022-11-18 20:57:03,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:03,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391531283] [2022-11-18 20:57:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:03,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:03,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:03,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391531283] [2022-11-18 20:57:03,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391531283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:57:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657072451] [2022-11-18 20:57:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:03,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:03,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:03,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:03,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:57:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:03,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:57:03,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:03,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:57:03,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657072451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:03,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:57:03,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:57:03,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879841207] [2022-11-18 20:57:03,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:03,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:57:03,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:03,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:57:03,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:57:03,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 169 [2022-11-18 20:57:03,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 146 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 137.33333333333334) internal successors, (824), 6 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:03,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:03,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 169 [2022-11-18 20:57:03,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:04,165 INFO L130 PetriNetUnfolder]: 401/1384 cut-off events. [2022-11-18 20:57:04,165 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-11-18 20:57:04,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 1384 events. 401/1384 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8598 event pairs, 180 based on Foata normal form. 4/973 useless extension candidates. Maximal degree in co-relation 1762. Up to 460 conditions per place. [2022-11-18 20:57:04,177 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 37 selfloop transitions, 11 changer transitions 0/157 dead transitions. [2022-11-18 20:57:04,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 509 flow [2022-11-18 20:57:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:57:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:57:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 985 transitions. [2022-11-18 20:57:04,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8326289095519864 [2022-11-18 20:57:04,181 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 985 transitions. [2022-11-18 20:57:04,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 985 transitions. [2022-11-18 20:57:04,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:04,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 985 transitions. [2022-11-18 20:57:04,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.71428571428572) internal successors, (985), 7 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:04,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:04,188 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:04,188 INFO L175 Difference]: Start difference. First operand has 160 places, 146 transitions, 402 flow. Second operand 7 states and 985 transitions. [2022-11-18 20:57:04,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 509 flow [2022-11-18 20:57:04,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 157 transitions, 477 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:57:04,199 INFO L231 Difference]: Finished difference. Result has 156 places, 142 transitions, 365 flow [2022-11-18 20:57:04,199 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=365, PETRI_PLACES=156, PETRI_TRANSITIONS=142} [2022-11-18 20:57:04,201 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 14 predicate places. [2022-11-18 20:57:04,201 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 142 transitions, 365 flow [2022-11-18 20:57:04,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.33333333333334) internal successors, (824), 6 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:04,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:04,202 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] [2022-11-18 20:57:04,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:57:04,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:04,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1145619235, now seen corresponding path program 1 times [2022-11-18 20:57:04,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:04,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250410740] [2022-11-18 20:57:04,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:04,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:04,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:04,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250410740] [2022-11-18 20:57:04,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250410740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:04,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:04,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:57:04,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057656099] [2022-11-18 20:57:04,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:57:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:57:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:57:04,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 169 [2022-11-18 20:57:04,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 142 transitions, 365 flow. Second operand has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:04,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:04,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 169 [2022-11-18 20:57:04,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:05,014 INFO L130 PetriNetUnfolder]: 322/1178 cut-off events. [2022-11-18 20:57:05,015 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-11-18 20:57:05,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 1178 events. 322/1178 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6995 event pairs, 144 based on Foata normal form. 6/848 useless extension candidates. Maximal degree in co-relation 1704. Up to 469 conditions per place. [2022-11-18 20:57:05,025 INFO L137 encePairwiseOnDemand]: 158/169 looper letters, 28 selfloop transitions, 6 changer transitions 5/149 dead transitions. [2022-11-18 20:57:05,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 149 transitions, 463 flow [2022-11-18 20:57:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:57:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:57:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 968 transitions. [2022-11-18 20:57:05,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8182586644125106 [2022-11-18 20:57:05,029 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 968 transitions. [2022-11-18 20:57:05,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 968 transitions. [2022-11-18 20:57:05,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:05,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 968 transitions. [2022-11-18 20:57:05,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.28571428571428) internal successors, (968), 7 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) [2022-11-18 20:57:05,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:05,036 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:05,036 INFO L175 Difference]: Start difference. First operand has 156 places, 142 transitions, 365 flow. Second operand 7 states and 968 transitions. [2022-11-18 20:57:05,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 149 transitions, 463 flow [2022-11-18 20:57:05,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 149 transitions, 449 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:57:05,043 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 375 flow [2022-11-18 20:57:05,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=159, PETRI_TRANSITIONS=142} [2022-11-18 20:57:05,045 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 17 predicate places. [2022-11-18 20:57:05,046 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 375 flow [2022-11-18 20:57:05,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:05,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:05,046 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] [2022-11-18 20:57:05,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:57:05,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:05,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:05,048 INFO L85 PathProgramCache]: Analyzing trace with hash -733504077, now seen corresponding path program 1 times [2022-11-18 20:57:05,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:05,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787765349] [2022-11-18 20:57:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:05,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:05,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:05,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787765349] [2022-11-18 20:57:05,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787765349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:57:05,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531256760] [2022-11-18 20:57:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:05,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:05,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:05,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:05,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:57:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:05,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:57:05,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:57:05,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:57:05,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531256760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:05,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:57:05,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-18 20:57:05,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369623081] [2022-11-18 20:57:05,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:05,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:57:05,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:05,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:57:05,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:57:05,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-18 20:57:05,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:05,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:05,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-18 20:57:05,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:05,826 INFO L130 PetriNetUnfolder]: 157/803 cut-off events. [2022-11-18 20:57:05,826 INFO L131 PetriNetUnfolder]: For 143/159 co-relation queries the response was YES. [2022-11-18 20:57:05,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 803 events. 157/803 cut-off events. For 143/159 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4304 event pairs, 68 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1181. Up to 224 conditions per place. [2022-11-18 20:57:05,833 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 11 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2022-11-18 20:57:05,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 140 transitions, 395 flow [2022-11-18 20:57:05,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:57:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:57:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 580 transitions. [2022-11-18 20:57:05,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8579881656804734 [2022-11-18 20:57:05,836 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 580 transitions. [2022-11-18 20:57:05,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 580 transitions. [2022-11-18 20:57:05,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:05,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 580 transitions. [2022-11-18 20:57:05,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:05,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:05,841 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:05,841 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 375 flow. Second operand 4 states and 580 transitions. [2022-11-18 20:57:05,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 140 transitions, 395 flow [2022-11-18 20:57:05,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 140 transitions, 383 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:57:05,846 INFO L231 Difference]: Finished difference. Result has 154 places, 140 transitions, 361 flow [2022-11-18 20:57:05,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=154, PETRI_TRANSITIONS=140} [2022-11-18 20:57:05,847 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 12 predicate places. [2022-11-18 20:57:05,847 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 140 transitions, 361 flow [2022-11-18 20:57:05,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:05,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:05,848 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] [2022-11-18 20:57:05,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:57:06,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:06,055 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:06,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:06,056 INFO L85 PathProgramCache]: Analyzing trace with hash -522763882, now seen corresponding path program 1 times [2022-11-18 20:57:06,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:06,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976915300] [2022-11-18 20:57:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:06,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:57:06,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:06,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976915300] [2022-11-18 20:57:06,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976915300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:06,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:06,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:57:06,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327067359] [2022-11-18 20:57:06,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:06,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:57:06,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:57:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:57:06,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 169 [2022-11-18 20:57:06,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 140 transitions, 361 flow. Second operand has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:06,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:06,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 169 [2022-11-18 20:57:06,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:06,670 INFO L130 PetriNetUnfolder]: 909/2227 cut-off events. [2022-11-18 20:57:06,670 INFO L131 PetriNetUnfolder]: For 338/354 co-relation queries the response was YES. [2022-11-18 20:57:06,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4428 conditions, 2227 events. 909/2227 cut-off events. For 338/354 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 15068 event pairs, 304 based on Foata normal form. 0/1839 useless extension candidates. Maximal degree in co-relation 4382. Up to 680 conditions per place. [2022-11-18 20:57:06,692 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 30 selfloop transitions, 6 changer transitions 0/151 dead transitions. [2022-11-18 20:57:06,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 151 transitions, 467 flow [2022-11-18 20:57:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:57:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:57:06,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 817 transitions. [2022-11-18 20:57:06,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8057199211045365 [2022-11-18 20:57:06,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 817 transitions. [2022-11-18 20:57:06,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 817 transitions. [2022-11-18 20:57:06,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:06,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 817 transitions. [2022-11-18 20:57:06,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:06,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:06,702 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:06,702 INFO L175 Difference]: Start difference. First operand has 154 places, 140 transitions, 361 flow. Second operand 6 states and 817 transitions. [2022-11-18 20:57:06,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 151 transitions, 467 flow [2022-11-18 20:57:06,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 151 transitions, 461 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:57:06,706 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 365 flow [2022-11-18 20:57:06,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2022-11-18 20:57:06,708 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 13 predicate places. [2022-11-18 20:57:06,708 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 365 flow [2022-11-18 20:57:06,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:06,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:06,709 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] [2022-11-18 20:57:06,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:57:06,709 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:06,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:06,710 INFO L85 PathProgramCache]: Analyzing trace with hash 974189365, now seen corresponding path program 1 times [2022-11-18 20:57:06,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:06,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076897872] [2022-11-18 20:57:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:06,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:57:06,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:06,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076897872] [2022-11-18 20:57:06,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076897872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:06,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:06,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:57:06,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620157969] [2022-11-18 20:57:06,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:06,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:57:06,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:06,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:57:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:57:06,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 169 [2022-11-18 20:57:06,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 365 flow. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:06,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:06,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 169 [2022-11-18 20:57:06,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:07,106 INFO L130 PetriNetUnfolder]: 505/1499 cut-off events. [2022-11-18 20:57:07,106 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2022-11-18 20:57:07,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3071 conditions, 1499 events. 505/1499 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9947 event pairs, 112 based on Foata normal form. 0/1283 useless extension candidates. Maximal degree in co-relation 2984. Up to 297 conditions per place. [2022-11-18 20:57:07,118 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 28 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2022-11-18 20:57:07,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 154 transitions, 478 flow [2022-11-18 20:57:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:57:07,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:57:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 718 transitions. [2022-11-18 20:57:07,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8497041420118343 [2022-11-18 20:57:07,121 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 718 transitions. [2022-11-18 20:57:07,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 718 transitions. [2022-11-18 20:57:07,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:07,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 718 transitions. [2022-11-18 20:57:07,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,126 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,126 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 365 flow. Second operand 5 states and 718 transitions. [2022-11-18 20:57:07,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 154 transitions, 478 flow [2022-11-18 20:57:07,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 154 transitions, 466 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:57:07,130 INFO L231 Difference]: Finished difference. Result has 153 places, 138 transitions, 359 flow [2022-11-18 20:57:07,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=153, PETRI_TRANSITIONS=138} [2022-11-18 20:57:07,131 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 11 predicate places. [2022-11-18 20:57:07,131 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 138 transitions, 359 flow [2022-11-18 20:57:07,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:07,132 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] [2022-11-18 20:57:07,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:57:07,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:07,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:07,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1232447789, now seen corresponding path program 1 times [2022-11-18 20:57:07,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:07,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922670553] [2022-11-18 20:57:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:07,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:57:07,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:07,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922670553] [2022-11-18 20:57:07,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922670553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:07,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:07,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:57:07,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374425105] [2022-11-18 20:57:07,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:07,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:57:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:57:07,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:57:07,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 169 [2022-11-18 20:57:07,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 138 transitions, 359 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:07,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 169 [2022-11-18 20:57:07,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:07,447 INFO L130 PetriNetUnfolder]: 97/767 cut-off events. [2022-11-18 20:57:07,447 INFO L131 PetriNetUnfolder]: For 146/178 co-relation queries the response was YES. [2022-11-18 20:57:07,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 767 events. 97/767 cut-off events. For 146/178 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4289 event pairs, 24 based on Foata normal form. 16/679 useless extension candidates. Maximal degree in co-relation 1108. Up to 168 conditions per place. [2022-11-18 20:57:07,452 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 12 selfloop transitions, 6 changer transitions 1/142 dead transitions. [2022-11-18 20:57:07,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 142 transitions, 412 flow [2022-11-18 20:57:07,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:57:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:57:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-11-18 20:57:07,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8678500986193294 [2022-11-18 20:57:07,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-11-18 20:57:07,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-11-18 20:57:07,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:07,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-11-18 20:57:07,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,458 INFO L175 Difference]: Start difference. First operand has 153 places, 138 transitions, 359 flow. Second operand 3 states and 440 transitions. [2022-11-18 20:57:07,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 142 transitions, 412 flow [2022-11-18 20:57:07,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 142 transitions, 404 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:57:07,462 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 377 flow [2022-11-18 20:57:07,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-11-18 20:57:07,463 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 10 predicate places. [2022-11-18 20:57:07,463 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 377 flow [2022-11-18 20:57:07,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:07,464 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] [2022-11-18 20:57:07,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:57:07,464 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:07,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash -804550597, now seen corresponding path program 1 times [2022-11-18 20:57:07,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:07,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666443401] [2022-11-18 20:57:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:07,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:09,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:09,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666443401] [2022-11-18 20:57:09,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666443401] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:57:09,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967335750] [2022-11-18 20:57:09,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:09,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:09,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:09,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:09,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:57:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:09,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 20:57:09,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:10,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:57:11,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:11,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:57:12,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:12,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:57:12,548 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 20:57:12,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 20:57:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:12,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:57:17,981 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:57:17,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-18 20:57:17,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:57:17,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 84 [2022-11-18 20:57:18,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2022-11-18 20:57:18,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-11-18 20:57:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:20,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967335750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:57:20,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:57:20,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-11-18 20:57:20,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344211811] [2022-11-18 20:57:20,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:57:20,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-18 20:57:20,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-18 20:57:20,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=3704, Unknown=3, NotChecked=0, Total=4032 [2022-11-18 20:57:20,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 169 [2022-11-18 20:57:20,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 377 flow. Second operand has 64 states, 64 states have (on average 95.015625) internal successors, (6081), 64 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:20,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:20,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 169 [2022-11-18 20:57:20,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:24,591 INFO L130 PetriNetUnfolder]: 679/2081 cut-off events. [2022-11-18 20:57:24,591 INFO L131 PetriNetUnfolder]: For 1029/1055 co-relation queries the response was YES. [2022-11-18 20:57:24,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 2081 events. 679/2081 cut-off events. For 1029/1055 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13554 event pairs, 328 based on Foata normal form. 0/1818 useless extension candidates. Maximal degree in co-relation 3957. Up to 948 conditions per place. [2022-11-18 20:57:24,610 INFO L137 encePairwiseOnDemand]: 137/169 looper letters, 77 selfloop transitions, 44 changer transitions 0/191 dead transitions. [2022-11-18 20:57:24,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 191 transitions, 782 flow [2022-11-18 20:57:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:57:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 20:57:24,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2995 transitions. [2022-11-18 20:57:24,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5716739835846536 [2022-11-18 20:57:24,618 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2995 transitions. [2022-11-18 20:57:24,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2995 transitions. [2022-11-18 20:57:24,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:24,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2995 transitions. [2022-11-18 20:57:24,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 96.61290322580645) internal successors, (2995), 31 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:24,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 169.0) internal successors, (5408), 32 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:24,673 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 169.0) internal successors, (5408), 32 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:24,674 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 377 flow. Second operand 31 states and 2995 transitions. [2022-11-18 20:57:24,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 191 transitions, 782 flow [2022-11-18 20:57:24,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 191 transitions, 748 flow, removed 13 selfloop flow, removed 2 redundant places. [2022-11-18 20:57:24,679 INFO L231 Difference]: Finished difference. Result has 192 places, 171 transitions, 634 flow [2022-11-18 20:57:24,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=634, PETRI_PLACES=192, PETRI_TRANSITIONS=171} [2022-11-18 20:57:24,680 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 50 predicate places. [2022-11-18 20:57:24,680 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 171 transitions, 634 flow [2022-11-18 20:57:24,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 95.015625) internal successors, (6081), 64 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:24,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:24,683 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] [2022-11-18 20:57:24,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:57:24,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 20:57:24,889 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:24,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:24,890 INFO L85 PathProgramCache]: Analyzing trace with hash -572337620, now seen corresponding path program 1 times [2022-11-18 20:57:24,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:24,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020800442] [2022-11-18 20:57:24,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:24,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:26,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:26,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020800442] [2022-11-18 20:57:26,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020800442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:57:26,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890020980] [2022-11-18 20:57:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:26,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:26,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:26,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:26,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:57:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:26,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 20:57:26,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:27,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:57:28,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:28,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:57:28,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:28,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:57:28,987 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 20:57:28,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-18 20:57:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:29,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:57:34,077 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:57:34,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-11-18 20:57:34,089 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:57:34,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 170 [2022-11-18 20:57:34,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 142 [2022-11-18 20:57:34,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 118 [2022-11-18 20:57:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:36,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890020980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:57:36,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:57:36,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 22] total 58 [2022-11-18 20:57:36,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713759720] [2022-11-18 20:57:36,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:57:36,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 20:57:36,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:36,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 20:57:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3163, Unknown=6, NotChecked=0, Total=3422 [2022-11-18 20:57:36,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 169 [2022-11-18 20:57:36,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 171 transitions, 634 flow. Second operand has 59 states, 59 states have (on average 95.1864406779661) internal successors, (5616), 59 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:36,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:36,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 169 [2022-11-18 20:57:36,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:41,091 INFO L130 PetriNetUnfolder]: 1125/3020 cut-off events. [2022-11-18 20:57:41,091 INFO L131 PetriNetUnfolder]: For 1937/2658 co-relation queries the response was YES. [2022-11-18 20:57:41,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6730 conditions, 3020 events. 1125/3020 cut-off events. For 1937/2658 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 22011 event pairs, 331 based on Foata normal form. 76/2656 useless extension candidates. Maximal degree in co-relation 6574. Up to 1152 conditions per place. [2022-11-18 20:57:41,178 INFO L137 encePairwiseOnDemand]: 138/169 looper letters, 138 selfloop transitions, 69 changer transitions 0/277 dead transitions. [2022-11-18 20:57:41,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 277 transitions, 1446 flow [2022-11-18 20:57:41,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:57:41,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:57:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3528 transitions. [2022-11-18 20:57:41,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5798816568047337 [2022-11-18 20:57:41,188 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3528 transitions. [2022-11-18 20:57:41,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3528 transitions. [2022-11-18 20:57:41,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:41,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3528 transitions. [2022-11-18 20:57:41,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:41,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 169.0) internal successors, (6253), 37 states have internal predecessors, (6253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:41,213 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 169.0) internal successors, (6253), 37 states have internal predecessors, (6253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:41,213 INFO L175 Difference]: Start difference. First operand has 192 places, 171 transitions, 634 flow. Second operand 36 states and 3528 transitions. [2022-11-18 20:57:41,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 277 transitions, 1446 flow [2022-11-18 20:57:41,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 277 transitions, 1365 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-11-18 20:57:41,227 INFO L231 Difference]: Finished difference. Result has 216 places, 200 transitions, 896 flow [2022-11-18 20:57:41,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=896, PETRI_PLACES=216, PETRI_TRANSITIONS=200} [2022-11-18 20:57:41,228 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 74 predicate places. [2022-11-18 20:57:41,228 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 200 transitions, 896 flow [2022-11-18 20:57:41,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 95.1864406779661) internal successors, (5616), 59 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:41,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:41,231 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] [2022-11-18 20:57:41,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:57:41,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:41,438 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:41,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:41,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1061138305, now seen corresponding path program 2 times [2022-11-18 20:57:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:41,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140186419] [2022-11-18 20:57:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:41,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:42,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:42,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140186419] [2022-11-18 20:57:42,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140186419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:57:42,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819613321] [2022-11-18 20:57:42,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:57:42,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:42,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:42,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:42,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:57:43,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:57:43,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:57:43,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:57:43,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:43,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:43,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:57:43,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-18 20:57:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:57:43,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:57:43,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819613321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:43,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:57:43,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 29 [2022-11-18 20:57:43,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626789808] [2022-11-18 20:57:43,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:43,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:57:43,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:43,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:57:43,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:57:43,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 169 [2022-11-18 20:57:43,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 200 transitions, 896 flow. Second operand has 13 states, 13 states have (on average 115.38461538461539) internal successors, (1500), 13 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:43,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:43,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 169 [2022-11-18 20:57:43,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:45,677 INFO L130 PetriNetUnfolder]: 2248/6926 cut-off events. [2022-11-18 20:57:45,677 INFO L131 PetriNetUnfolder]: For 6431/8499 co-relation queries the response was YES. [2022-11-18 20:57:45,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15111 conditions, 6926 events. 2248/6926 cut-off events. For 6431/8499 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 63630 event pairs, 571 based on Foata normal form. 216/6341 useless extension candidates. Maximal degree in co-relation 14961. Up to 1255 conditions per place. [2022-11-18 20:57:45,754 INFO L137 encePairwiseOnDemand]: 154/169 looper letters, 111 selfloop transitions, 37 changer transitions 2/254 dead transitions. [2022-11-18 20:57:45,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 254 transitions, 1469 flow [2022-11-18 20:57:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:57:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:57:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1660 transitions. [2022-11-18 20:57:45,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7016060862214708 [2022-11-18 20:57:45,760 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1660 transitions. [2022-11-18 20:57:45,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1660 transitions. [2022-11-18 20:57:45,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:45,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1660 transitions. [2022-11-18 20:57:45,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 118.57142857142857) internal successors, (1660), 14 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:45,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:45,776 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:45,777 INFO L175 Difference]: Start difference. First operand has 216 places, 200 transitions, 896 flow. Second operand 14 states and 1660 transitions. [2022-11-18 20:57:45,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 254 transitions, 1469 flow [2022-11-18 20:57:45,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 254 transitions, 1358 flow, removed 33 selfloop flow, removed 21 redundant places. [2022-11-18 20:57:45,821 INFO L231 Difference]: Finished difference. Result has 210 places, 207 transitions, 962 flow [2022-11-18 20:57:45,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=962, PETRI_PLACES=210, PETRI_TRANSITIONS=207} [2022-11-18 20:57:45,822 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 68 predicate places. [2022-11-18 20:57:45,822 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 207 transitions, 962 flow [2022-11-18 20:57:45,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 115.38461538461539) internal successors, (1500), 13 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:45,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:45,823 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] [2022-11-18 20:57:45,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:57:46,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:46,030 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1630062490, now seen corresponding path program 2 times [2022-11-18 20:57:46,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:46,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652489843] [2022-11-18 20:57:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:46,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:47,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:47,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652489843] [2022-11-18 20:57:47,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652489843] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:57:47,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184420812] [2022-11-18 20:57:47,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:57:47,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:47,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:47,359 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:47,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:57:47,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:57:47,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:57:47,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:57:47,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:48,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:48,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:57:48,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-18 20:57:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:57:48,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:57:48,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184420812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:48,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:57:48,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 29 [2022-11-18 20:57:48,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110453285] [2022-11-18 20:57:48,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:48,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:57:48,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:48,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:57:48,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:57:48,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 169 [2022-11-18 20:57:48,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 207 transitions, 962 flow. Second operand has 13 states, 13 states have (on average 115.38461538461539) internal successors, (1500), 13 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:48,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:48,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 169 [2022-11-18 20:57:48,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:50,096 INFO L130 PetriNetUnfolder]: 2666/8292 cut-off events. [2022-11-18 20:57:50,096 INFO L131 PetriNetUnfolder]: For 8370/10056 co-relation queries the response was YES. [2022-11-18 20:57:50,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18251 conditions, 8292 events. 2666/8292 cut-off events. For 8370/10056 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 79535 event pairs, 648 based on Foata normal form. 155/7579 useless extension candidates. Maximal degree in co-relation 18108. Up to 1853 conditions per place. [2022-11-18 20:57:50,176 INFO L137 encePairwiseOnDemand]: 154/169 looper letters, 113 selfloop transitions, 35 changer transitions 2/254 dead transitions. [2022-11-18 20:57:50,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 254 transitions, 1487 flow [2022-11-18 20:57:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:57:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:57:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1661 transitions. [2022-11-18 20:57:50,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.702028740490279 [2022-11-18 20:57:50,180 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1661 transitions. [2022-11-18 20:57:50,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1661 transitions. [2022-11-18 20:57:50,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:50,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1661 transitions. [2022-11-18 20:57:50,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 118.64285714285714) internal successors, (1661), 14 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:50,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:50,189 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:50,189 INFO L175 Difference]: Start difference. First operand has 210 places, 207 transitions, 962 flow. Second operand 14 states and 1661 transitions. [2022-11-18 20:57:50,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 254 transitions, 1487 flow [2022-11-18 20:57:50,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 254 transitions, 1457 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:57:50,237 INFO L231 Difference]: Finished difference. Result has 216 places, 210 transitions, 1055 flow [2022-11-18 20:57:50,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1055, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2022-11-18 20:57:50,238 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 74 predicate places. [2022-11-18 20:57:50,239 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 1055 flow [2022-11-18 20:57:50,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 115.38461538461539) internal successors, (1500), 13 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:50,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:50,240 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] [2022-11-18 20:57:50,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:57:50,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:57:50,446 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash -336422040, now seen corresponding path program 2 times [2022-11-18 20:57:50,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:50,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246925567] [2022-11-18 20:57:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:50,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:50,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:50,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246925567] [2022-11-18 20:57:50,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246925567] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:57:50,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271229980] [2022-11-18 20:57:50,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:57:50,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:50,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:50,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:50,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:57:50,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:57:50,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:57:50,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:57:50,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:57:51,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:57:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:57:51,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271229980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:57:51,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:57:51,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:57:51,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19700341] [2022-11-18 20:57:51,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:57:51,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:57:51,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:51,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:57:51,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:57:51,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 169 [2022-11-18 20:57:51,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 1055 flow. Second operand has 18 states, 18 states have (on average 128.61111111111111) internal successors, (2315), 18 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:51,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:51,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 169 [2022-11-18 20:57:51,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:52,805 INFO L130 PetriNetUnfolder]: 1051/4766 cut-off events. [2022-11-18 20:57:52,805 INFO L131 PetriNetUnfolder]: For 5979/6495 co-relation queries the response was YES. [2022-11-18 20:57:52,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10679 conditions, 4766 events. 1051/4766 cut-off events. For 5979/6495 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 43731 event pairs, 263 based on Foata normal form. 5/4256 useless extension candidates. Maximal degree in co-relation 10540. Up to 785 conditions per place. [2022-11-18 20:57:52,867 INFO L137 encePairwiseOnDemand]: 158/169 looper letters, 207 selfloop transitions, 25 changer transitions 0/349 dead transitions. [2022-11-18 20:57:52,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 349 transitions, 2537 flow [2022-11-18 20:57:52,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:57:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 20:57:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3111 transitions. [2022-11-18 20:57:52,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7670118343195266 [2022-11-18 20:57:52,874 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3111 transitions. [2022-11-18 20:57:52,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3111 transitions. [2022-11-18 20:57:52,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:52,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3111 transitions. [2022-11-18 20:57:52,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 129.625) internal successors, (3111), 24 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:52,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 169.0) internal successors, (4225), 25 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:52,893 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 169.0) internal successors, (4225), 25 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:52,893 INFO L175 Difference]: Start difference. First operand has 216 places, 210 transitions, 1055 flow. Second operand 24 states and 3111 transitions. [2022-11-18 20:57:52,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 349 transitions, 2537 flow [2022-11-18 20:57:52,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 349 transitions, 2429 flow, removed 6 selfloop flow, removed 16 redundant places. [2022-11-18 20:57:52,925 INFO L231 Difference]: Finished difference. Result has 223 places, 214 transitions, 1063 flow [2022-11-18 20:57:52,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1063, PETRI_PLACES=223, PETRI_TRANSITIONS=214} [2022-11-18 20:57:52,927 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 81 predicate places. [2022-11-18 20:57:52,927 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 214 transitions, 1063 flow [2022-11-18 20:57:52,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 128.61111111111111) internal successors, (2315), 18 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:52,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:52,929 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] [2022-11-18 20:57:52,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 20:57:53,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:57:53,135 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:53,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:53,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1183774188, now seen corresponding path program 1 times [2022-11-18 20:57:53,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:53,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367909130] [2022-11-18 20:57:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:53,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:57:53,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:53,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367909130] [2022-11-18 20:57:53,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367909130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:53,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:53,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:57:53,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826856973] [2022-11-18 20:57:53,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:53,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:57:53,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:53,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:57:53,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:57:53,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 169 [2022-11-18 20:57:53,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 214 transitions, 1063 flow. Second operand has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:53,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:53,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 169 [2022-11-18 20:57:53,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:55,004 INFO L130 PetriNetUnfolder]: 2004/9385 cut-off events. [2022-11-18 20:57:55,005 INFO L131 PetriNetUnfolder]: For 10469/12424 co-relation queries the response was YES. [2022-11-18 20:57:55,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19468 conditions, 9385 events. 2004/9385 cut-off events. For 10469/12424 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 100621 event pairs, 258 based on Foata normal form. 293/8561 useless extension candidates. Maximal degree in co-relation 17868. Up to 1560 conditions per place. [2022-11-18 20:57:55,068 INFO L137 encePairwiseOnDemand]: 166/169 looper letters, 54 selfloop transitions, 27 changer transitions 0/234 dead transitions. [2022-11-18 20:57:55,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 234 transitions, 1382 flow [2022-11-18 20:57:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:57:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:57:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 598 transitions. [2022-11-18 20:57:55,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2022-11-18 20:57:55,071 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 598 transitions. [2022-11-18 20:57:55,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 598 transitions. [2022-11-18 20:57:55,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:55,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 598 transitions. [2022-11-18 20:57:55,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:55,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:55,075 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:55,075 INFO L175 Difference]: Start difference. First operand has 223 places, 214 transitions, 1063 flow. Second operand 4 states and 598 transitions. [2022-11-18 20:57:55,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 234 transitions, 1382 flow [2022-11-18 20:57:55,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 234 transitions, 1324 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-11-18 20:57:55,105 INFO L231 Difference]: Finished difference. Result has 209 places, 218 transitions, 1177 flow [2022-11-18 20:57:55,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1177, PETRI_PLACES=209, PETRI_TRANSITIONS=218} [2022-11-18 20:57:55,106 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 67 predicate places. [2022-11-18 20:57:55,106 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 218 transitions, 1177 flow [2022-11-18 20:57:55,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:55,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:55,107 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] [2022-11-18 20:57:55,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:57:55,107 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:57:55,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash 331880720, now seen corresponding path program 1 times [2022-11-18 20:57:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:55,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983755562] [2022-11-18 20:57:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:55,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:57,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:57,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983755562] [2022-11-18 20:57:57,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983755562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:57:57,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546161331] [2022-11-18 20:57:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:57,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:57:57,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:57,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:57:57,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:57:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:57,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 20:57:57,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:58,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:57:59,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:59,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:57:59,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:59,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:57:59,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:59,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:57:59,949 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 20:57:59,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 20:58:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:00,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:58:11,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:58:11,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-18 20:58:11,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:58:11,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 168 [2022-11-18 20:58:11,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 128 [2022-11-18 20:58:11,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 116 [2022-11-18 20:58:11,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-11-18 20:58:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:13,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546161331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:58:13,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:58:13,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2022-11-18 20:58:13,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721616466] [2022-11-18 20:58:13,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:58:13,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-18 20:58:13,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:13,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-18 20:58:13,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=4454, Unknown=6, NotChecked=0, Total=4830 [2022-11-18 20:58:13,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 169 [2022-11-18 20:58:13,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 218 transitions, 1177 flow. Second operand has 70 states, 70 states have (on average 89.92857142857143) internal successors, (6295), 70 states have internal predecessors, (6295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:13,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:13,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 169 [2022-11-18 20:58:13,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:22,329 INFO L130 PetriNetUnfolder]: 7075/19042 cut-off events. [2022-11-18 20:58:22,329 INFO L131 PetriNetUnfolder]: For 42663/52102 co-relation queries the response was YES. [2022-11-18 20:58:22,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52336 conditions, 19042 events. 7075/19042 cut-off events. For 42663/52102 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 197687 event pairs, 2255 based on Foata normal form. 1551/18370 useless extension candidates. Maximal degree in co-relation 48814. Up to 7143 conditions per place. [2022-11-18 20:58:22,532 INFO L137 encePairwiseOnDemand]: 137/169 looper letters, 132 selfloop transitions, 90 changer transitions 0/289 dead transitions. [2022-11-18 20:58:22,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 289 transitions, 1988 flow [2022-11-18 20:58:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:58:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 20:58:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3056 transitions. [2022-11-18 20:58:22,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5479648556571634 [2022-11-18 20:58:22,539 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3056 transitions. [2022-11-18 20:58:22,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3056 transitions. [2022-11-18 20:58:22,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:22,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3056 transitions. [2022-11-18 20:58:22,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 92.60606060606061) internal successors, (3056), 33 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:22,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 169.0) internal successors, (5746), 34 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:22,557 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 169.0) internal successors, (5746), 34 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:22,558 INFO L175 Difference]: Start difference. First operand has 209 places, 218 transitions, 1177 flow. Second operand 33 states and 3056 transitions. [2022-11-18 20:58:22,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 289 transitions, 1988 flow [2022-11-18 20:58:22,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 289 transitions, 1970 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-18 20:58:22,660 INFO L231 Difference]: Finished difference. Result has 243 places, 237 transitions, 1572 flow [2022-11-18 20:58:22,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1572, PETRI_PLACES=243, PETRI_TRANSITIONS=237} [2022-11-18 20:58:22,661 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 101 predicate places. [2022-11-18 20:58:22,662 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 237 transitions, 1572 flow [2022-11-18 20:58:22,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 89.92857142857143) internal successors, (6295), 70 states have internal predecessors, (6295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:22,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:22,664 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] [2022-11-18 20:58:22,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:58:22,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:58:22,872 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:58:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1579521729, now seen corresponding path program 1 times [2022-11-18 20:58:22,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:22,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615741162] [2022-11-18 20:58:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:22,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:24,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:24,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615741162] [2022-11-18 20:58:24,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615741162] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:58:24,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95705940] [2022-11-18 20:58:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:24,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:58:24,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:58:24,248 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:58:24,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:58:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:24,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 20:58:24,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:58:25,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:58:26,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:58:26,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:58:26,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:58:26,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:58:26,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:58:26,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:58:26,976 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 20:58:26,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-18 20:58:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:27,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:58:27,116 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_378 (Array Int Int))) (< 0 (+ 2147483649 c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_378) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))))) is different from false [2022-11-18 20:58:27,141 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_377 (Array Int Int)) (v_ArrVal_378 (Array Int Int))) (< 0 (+ 2147483649 c_~d~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_377) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_378) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))))) is different from false [2022-11-18 20:58:34,016 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:58:34,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-18 20:58:34,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:58:34,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 358 treesize of output 346 [2022-11-18 20:58:34,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 141 [2022-11-18 20:58:34,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 306 treesize of output 258 [2022-11-18 20:58:34,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 246 [2022-11-18 20:58:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:36,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95705940] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:58:36,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:58:36,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 24] total 65 [2022-11-18 20:58:36,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522588011] [2022-11-18 20:58:36,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:58:36,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-18 20:58:36,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:36,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-18 20:58:36,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3737, Unknown=6, NotChecked=250, Total=4290 [2022-11-18 20:58:36,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 169 [2022-11-18 20:58:36,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 237 transitions, 1572 flow. Second operand has 66 states, 66 states have (on average 90.04545454545455) internal successors, (5943), 66 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:36,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:36,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 169 [2022-11-18 20:58:36,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:44,689 INFO L130 PetriNetUnfolder]: 7203/19952 cut-off events. [2022-11-18 20:58:44,689 INFO L131 PetriNetUnfolder]: For 51953/61247 co-relation queries the response was YES. [2022-11-18 20:58:44,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56764 conditions, 19952 events. 7203/19952 cut-off events. For 51953/61247 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 210102 event pairs, 2172 based on Foata normal form. 1844/19371 useless extension candidates. Maximal degree in co-relation 52987. Up to 7312 conditions per place. [2022-11-18 20:58:44,956 INFO L137 encePairwiseOnDemand]: 131/169 looper letters, 133 selfloop transitions, 103 changer transitions 6/309 dead transitions. [2022-11-18 20:58:44,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 309 transitions, 2423 flow [2022-11-18 20:58:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:58:44,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:58:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3326 transitions. [2022-11-18 20:58:44,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5466798159105851 [2022-11-18 20:58:44,964 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3326 transitions. [2022-11-18 20:58:44,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3326 transitions. [2022-11-18 20:58:44,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:44,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3326 transitions. [2022-11-18 20:58:44,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 92.38888888888889) internal successors, (3326), 36 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:44,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 169.0) internal successors, (6253), 37 states have internal predecessors, (6253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:44,983 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 169.0) internal successors, (6253), 37 states have internal predecessors, (6253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:44,985 INFO L175 Difference]: Start difference. First operand has 243 places, 237 transitions, 1572 flow. Second operand 36 states and 3326 transitions. [2022-11-18 20:58:44,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 309 transitions, 2423 flow [2022-11-18 20:58:45,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 309 transitions, 2346 flow, removed 9 selfloop flow, removed 24 redundant places. [2022-11-18 20:58:45,223 INFO L231 Difference]: Finished difference. Result has 260 places, 259 transitions, 2020 flow [2022-11-18 20:58:45,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2020, PETRI_PLACES=260, PETRI_TRANSITIONS=259} [2022-11-18 20:58:45,224 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 118 predicate places. [2022-11-18 20:58:45,225 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 259 transitions, 2020 flow [2022-11-18 20:58:45,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 90.04545454545455) internal successors, (5943), 66 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:45,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:45,227 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] [2022-11-18 20:58:45,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:58:45,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:58:45,435 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:58:45,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:45,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1294765865, now seen corresponding path program 2 times [2022-11-18 20:58:45,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:45,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242944363] [2022-11-18 20:58:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:45,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:46,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:46,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242944363] [2022-11-18 20:58:46,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242944363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:58:46,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826023995] [2022-11-18 20:58:46,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:58:46,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:58:46,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:58:46,812 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:58:46,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:58:46,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:58:46,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:58:46,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:58:46,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:58:46,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:58:47,191 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:58:47,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:58:47,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:58:47,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-18 20:58:47,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:58:47,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:58:47,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826023995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:47,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:58:47,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 30 [2022-11-18 20:58:47,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884347838] [2022-11-18 20:58:47,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:47,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:58:47,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:47,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:58:47,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:58:47,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 169 [2022-11-18 20:58:47,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 259 transitions, 2020 flow. Second operand has 13 states, 13 states have (on average 111.61538461538461) internal successors, (1451), 13 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:47,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:47,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 169 [2022-11-18 20:58:47,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:55,991 INFO L130 PetriNetUnfolder]: 12955/41060 cut-off events. [2022-11-18 20:58:55,991 INFO L131 PetriNetUnfolder]: For 129078/146208 co-relation queries the response was YES. [2022-11-18 20:58:56,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119675 conditions, 41060 events. 12955/41060 cut-off events. For 129078/146208 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 515023 event pairs, 2207 based on Foata normal form. 1990/38689 useless extension candidates. Maximal degree in co-relation 115529. Up to 8269 conditions per place. [2022-11-18 20:58:56,590 INFO L137 encePairwiseOnDemand]: 154/169 looper letters, 179 selfloop transitions, 47 changer transitions 2/334 dead transitions. [2022-11-18 20:58:56,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 334 transitions, 3237 flow [2022-11-18 20:58:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:58:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:58:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1609 transitions. [2022-11-18 20:58:56,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.680050718512257 [2022-11-18 20:58:56,594 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1609 transitions. [2022-11-18 20:58:56,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1609 transitions. [2022-11-18 20:58:56,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:56,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1609 transitions. [2022-11-18 20:58:56,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 114.92857142857143) internal successors, (1609), 14 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:56,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:56,601 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:56,601 INFO L175 Difference]: Start difference. First operand has 260 places, 259 transitions, 2020 flow. Second operand 14 states and 1609 transitions. [2022-11-18 20:58:56,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 334 transitions, 3237 flow [2022-11-18 20:58:57,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 334 transitions, 3114 flow, removed 32 selfloop flow, removed 24 redundant places. [2022-11-18 20:58:57,515 INFO L231 Difference]: Finished difference. Result has 252 places, 274 transitions, 2315 flow [2022-11-18 20:58:57,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2315, PETRI_PLACES=252, PETRI_TRANSITIONS=274} [2022-11-18 20:58:57,516 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 110 predicate places. [2022-11-18 20:58:57,516 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 274 transitions, 2315 flow [2022-11-18 20:58:57,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 111.61538461538461) internal successors, (1451), 13 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:57,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:57,516 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:57,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:58:57,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:58:57,717 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:58:57,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:57,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1918508407, now seen corresponding path program 1 times [2022-11-18 20:58:57,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:57,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292729886] [2022-11-18 20:58:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:57,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:57,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:57,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292729886] [2022-11-18 20:58:57,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292729886] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:58:57,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859212739] [2022-11-18 20:58:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:57,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:58:57,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:58:57,939 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:58:57,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:58:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:58,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:58:58,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:58:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:58,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:58:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:58,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859212739] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:58:58,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:58:58,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-18 20:58:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828616531] [2022-11-18 20:58:58,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:58:58,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:58:58,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:58,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:58:58,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:58:58,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 169 [2022-11-18 20:58:58,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 274 transitions, 2315 flow. Second operand has 19 states, 19 states have (on average 129.05263157894737) internal successors, (2452), 19 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:58,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:58,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 169 [2022-11-18 20:58:58,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:03,329 INFO L130 PetriNetUnfolder]: 5464/23279 cut-off events. [2022-11-18 20:59:03,329 INFO L131 PetriNetUnfolder]: For 87549/94426 co-relation queries the response was YES. [2022-11-18 20:59:03,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65549 conditions, 23279 events. 5464/23279 cut-off events. For 87549/94426 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 296940 event pairs, 1890 based on Foata normal form. 332/20144 useless extension candidates. Maximal degree in co-relation 65317. Up to 6479 conditions per place. [2022-11-18 20:59:03,506 INFO L137 encePairwiseOnDemand]: 158/169 looper letters, 79 selfloop transitions, 15 changer transitions 35/233 dead transitions. [2022-11-18 20:59:03,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 233 transitions, 1950 flow [2022-11-18 20:59:03,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:59:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:59:03,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1564 transitions. [2022-11-18 20:59:03,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7712031558185405 [2022-11-18 20:59:03,513 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1564 transitions. [2022-11-18 20:59:03,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1564 transitions. [2022-11-18 20:59:03,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:03,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1564 transitions. [2022-11-18 20:59:03,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 130.33333333333334) internal successors, (1564), 12 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:03,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:03,519 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:03,519 INFO L175 Difference]: Start difference. First operand has 252 places, 274 transitions, 2315 flow. Second operand 12 states and 1564 transitions. [2022-11-18 20:59:03,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 233 transitions, 1950 flow [2022-11-18 20:59:03,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 233 transitions, 1755 flow, removed 12 selfloop flow, removed 26 redundant places. [2022-11-18 20:59:03,877 INFO L231 Difference]: Finished difference. Result has 235 places, 194 transitions, 1196 flow [2022-11-18 20:59:03,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1196, PETRI_PLACES=235, PETRI_TRANSITIONS=194} [2022-11-18 20:59:03,878 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 93 predicate places. [2022-11-18 20:59:03,879 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 194 transitions, 1196 flow [2022-11-18 20:59:03,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 129.05263157894737) internal successors, (2452), 19 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:03,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:03,880 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:03,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:04,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:59:04,085 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:59:04,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:04,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1795596952, now seen corresponding path program 2 times [2022-11-18 20:59:04,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:04,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197401864] [2022-11-18 20:59:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:04,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:07,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:07,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197401864] [2022-11-18 20:59:07,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197401864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:07,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548480127] [2022-11-18 20:59:07,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:59:07,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:07,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:07,441 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:07,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:59:07,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:59:07,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:59:07,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:59:07,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:07,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:59:07,830 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:59:07,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:59:08,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:59:08,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-18 20:59:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:59:08,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:08,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548480127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:08,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:59:08,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [26] total 37 [2022-11-18 20:59:08,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634842080] [2022-11-18 20:59:08,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:08,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:59:08,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:08,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:59:08,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1257, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:59:08,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 169 [2022-11-18 20:59:08,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 194 transitions, 1196 flow. Second operand has 13 states, 13 states have (on average 111.61538461538461) internal successors, (1451), 13 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:08,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:08,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 169 [2022-11-18 20:59:08,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:14,475 INFO L130 PetriNetUnfolder]: 10206/32634 cut-off events. [2022-11-18 20:59:14,475 INFO L131 PetriNetUnfolder]: For 100588/119553 co-relation queries the response was YES. [2022-11-18 20:59:14,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92701 conditions, 32634 events. 10206/32634 cut-off events. For 100588/119553 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 403562 event pairs, 1705 based on Foata normal form. 950/30069 useless extension candidates. Maximal degree in co-relation 92663. Up to 10146 conditions per place. [2022-11-18 20:59:14,761 INFO L137 encePairwiseOnDemand]: 154/169 looper letters, 114 selfloop transitions, 24 changer transitions 2/246 dead transitions. [2022-11-18 20:59:14,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 246 transitions, 1895 flow [2022-11-18 20:59:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:59:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:59:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1607 transitions. [2022-11-18 20:59:14,764 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6792054099746407 [2022-11-18 20:59:14,764 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1607 transitions. [2022-11-18 20:59:14,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1607 transitions. [2022-11-18 20:59:14,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:14,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1607 transitions. [2022-11-18 20:59:14,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 114.78571428571429) internal successors, (1607), 14 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:14,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:14,771 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 169.0) internal successors, (2535), 15 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:14,771 INFO L175 Difference]: Start difference. First operand has 235 places, 194 transitions, 1196 flow. Second operand 14 states and 1607 transitions. [2022-11-18 20:59:14,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 246 transitions, 1895 flow [2022-11-18 20:59:14,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 246 transitions, 1834 flow, removed 20 selfloop flow, removed 16 redundant places. [2022-11-18 20:59:14,955 INFO L231 Difference]: Finished difference. Result has 212 places, 194 transitions, 1211 flow [2022-11-18 20:59:14,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1211, PETRI_PLACES=212, PETRI_TRANSITIONS=194} [2022-11-18 20:59:14,956 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 70 predicate places. [2022-11-18 20:59:14,956 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 194 transitions, 1211 flow [2022-11-18 20:59:14,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 111.61538461538461) internal successors, (1451), 13 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:14,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:14,957 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:14,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:15,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:15,158 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:59:15,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:15,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2036100946, now seen corresponding path program 3 times [2022-11-18 20:59:15,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:15,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499770786] [2022-11-18 20:59:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:15,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:18,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:18,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499770786] [2022-11-18 20:59:18,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499770786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:18,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43052944] [2022-11-18 20:59:18,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:59:18,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:18,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:18,468 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:18,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:59:18,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 20:59:18,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:59:18,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:59:18,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:18,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:59:18,936 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:59:18,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:59:19,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:19,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:59:19,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:59:19,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-18 20:59:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:59:19,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:19,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43052944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:19,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:59:19,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [28] total 41 [2022-11-18 20:59:19,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278752701] [2022-11-18 20:59:19,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:19,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:59:19,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:19,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:59:19,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1537, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:59:19,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 169 [2022-11-18 20:59:19,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 194 transitions, 1211 flow. Second operand has 15 states, 15 states have (on average 109.33333333333333) internal successors, (1640), 15 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:19,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:19,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 169 [2022-11-18 20:59:19,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:25,314 INFO L130 PetriNetUnfolder]: 9761/31344 cut-off events. [2022-11-18 20:59:25,314 INFO L131 PetriNetUnfolder]: For 98135/108550 co-relation queries the response was YES. [2022-11-18 20:59:25,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90118 conditions, 31344 events. 9761/31344 cut-off events. For 98135/108550 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 385421 event pairs, 990 based on Foata normal form. 1390/29444 useless extension candidates. Maximal degree in co-relation 90087. Up to 10147 conditions per place. [2022-11-18 20:59:25,535 INFO L137 encePairwiseOnDemand]: 154/169 looper letters, 92 selfloop transitions, 28 changer transitions 2/227 dead transitions. [2022-11-18 20:59:25,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 227 transitions, 1711 flow [2022-11-18 20:59:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:59:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:59:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1675 transitions. [2022-11-18 20:59:25,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6607495069033531 [2022-11-18 20:59:25,538 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1675 transitions. [2022-11-18 20:59:25,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1675 transitions. [2022-11-18 20:59:25,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:25,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1675 transitions. [2022-11-18 20:59:25,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 111.66666666666667) internal successors, (1675), 15 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:25,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 169.0) internal successors, (2704), 16 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:25,542 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 169.0) internal successors, (2704), 16 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:25,542 INFO L175 Difference]: Start difference. First operand has 212 places, 194 transitions, 1211 flow. Second operand 15 states and 1675 transitions. [2022-11-18 20:59:25,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 227 transitions, 1711 flow [2022-11-18 20:59:25,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 227 transitions, 1631 flow, removed 4 selfloop flow, removed 12 redundant places. [2022-11-18 20:59:25,690 INFO L231 Difference]: Finished difference. Result has 216 places, 196 transitions, 1268 flow [2022-11-18 20:59:25,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1268, PETRI_PLACES=216, PETRI_TRANSITIONS=196} [2022-11-18 20:59:25,691 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 74 predicate places. [2022-11-18 20:59:25,691 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 196 transitions, 1268 flow [2022-11-18 20:59:25,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 109.33333333333333) internal successors, (1640), 15 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:25,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:25,691 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:25,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-18 20:59:25,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:25,895 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:59:25,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:25,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2036100945, now seen corresponding path program 3 times [2022-11-18 20:59:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:25,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837541540] [2022-11-18 20:59:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:25,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:29,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:29,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837541540] [2022-11-18 20:59:29,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837541540] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:29,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6492534] [2022-11-18 20:59:29,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:59:29,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:29,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:29,003 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:29,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:59:29,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 20:59:29,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:59:29,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:59:29,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:29,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:59:29,453 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:59:29,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:59:30,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:30,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:59:30,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:59:30,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-18 20:59:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:59:30,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:30,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6492534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:30,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:59:30,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [28] total 41 [2022-11-18 20:59:30,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110760831] [2022-11-18 20:59:30,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:30,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:59:30,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:30,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:59:30,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:59:30,211 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 169 [2022-11-18 20:59:30,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 196 transitions, 1268 flow. Second operand has 15 states, 15 states have (on average 109.33333333333333) internal successors, (1640), 15 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:30,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:30,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 169 [2022-11-18 20:59:30,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:59:36,129 INFO L130 PetriNetUnfolder]: 10771/34319 cut-off events. [2022-11-18 20:59:36,129 INFO L131 PetriNetUnfolder]: For 111288/124783 co-relation queries the response was YES. [2022-11-18 20:59:36,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99080 conditions, 34319 events. 10771/34319 cut-off events. For 111288/124783 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 423940 event pairs, 1170 based on Foata normal form. 1800/32459 useless extension candidates. Maximal degree in co-relation 99048. Up to 7342 conditions per place. [2022-11-18 20:59:36,418 INFO L137 encePairwiseOnDemand]: 154/169 looper letters, 106 selfloop transitions, 36 changer transitions 2/249 dead transitions. [2022-11-18 20:59:36,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 249 transitions, 1977 flow [2022-11-18 20:59:36,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:59:36,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:59:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1685 transitions. [2022-11-18 20:59:36,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6646942800788954 [2022-11-18 20:59:36,421 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1685 transitions. [2022-11-18 20:59:36,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1685 transitions. [2022-11-18 20:59:36,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:59:36,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1685 transitions. [2022-11-18 20:59:36,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 112.33333333333333) internal successors, (1685), 15 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:36,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 169.0) internal successors, (2704), 16 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:36,430 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 169.0) internal successors, (2704), 16 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:36,430 INFO L175 Difference]: Start difference. First operand has 216 places, 196 transitions, 1268 flow. Second operand 15 states and 1685 transitions. [2022-11-18 20:59:36,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 249 transitions, 1977 flow [2022-11-18 20:59:36,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 249 transitions, 1904 flow, removed 13 selfloop flow, removed 14 redundant places. [2022-11-18 20:59:36,671 INFO L231 Difference]: Finished difference. Result has 218 places, 200 transitions, 1389 flow [2022-11-18 20:59:36,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1389, PETRI_PLACES=218, PETRI_TRANSITIONS=200} [2022-11-18 20:59:36,672 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 76 predicate places. [2022-11-18 20:59:36,672 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 200 transitions, 1389 flow [2022-11-18 20:59:36,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 109.33333333333333) internal successors, (1640), 15 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:36,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:59:36,672 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:36,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:36,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:36,873 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:59:36,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:36,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1193669408, now seen corresponding path program 1 times [2022-11-18 20:59:36,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:36,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069660591] [2022-11-18 20:59:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:38,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069660591] [2022-11-18 20:59:38,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069660591] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:38,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143106560] [2022-11-18 20:59:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:38,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:38,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:38,131 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:38,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb0b2d9-c6c2-47e0-8d67-df6f4b7b42e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:59:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:38,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 20:59:38,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:38,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:59:39,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:59:40,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:40,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:59:40,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:40,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:59:41,408 INFO L321 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2022-11-18 20:59:41,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 18 [2022-11-18 20:59:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:41,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:59:44,252 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:44,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 80 [2022-11-18 20:59:44,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:44,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 406 treesize of output 413 [2022-11-18 20:59:44,317 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:44,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 342 treesize of output 330 [2022-11-18 20:59:44,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:44,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 304 treesize of output 254 [2022-11-18 20:59:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:48,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143106560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:59:48,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:59:48,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 28] total 73 [2022-11-18 20:59:48,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354205501] [2022-11-18 20:59:48,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:59:48,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-11-18 20:59:48,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:48,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-11-18 20:59:48,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=4955, Unknown=24, NotChecked=0, Total=5402 [2022-11-18 20:59:48,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 169 [2022-11-18 20:59:48,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 200 transitions, 1389 flow. Second operand has 74 states, 74 states have (on average 95.3108108108108) internal successors, (7053), 74 states have internal predecessors, (7053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:48,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:59:48,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 169 [2022-11-18 20:59:48,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand