./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-context1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-context1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:32:49,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:32:49,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:32:49,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:32:49,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:32:49,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:32:49,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:32:49,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:32:49,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:32:49,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:32:49,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:32:49,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:32:49,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:32:49,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:32:49,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:32:49,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:32:49,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:32:49,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:32:49,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:32:49,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:32:49,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:32:49,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:32:49,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:32:49,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:32:49,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:32:49,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:32:49,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:32:49,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:32:49,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:32:49,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:32:49,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:32:49,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:32:49,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:32:49,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:32:49,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:32:49,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:32:49,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:32:49,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:32:49,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:32:49,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:32:49,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:32:49,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:32:49,708 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:32:49,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:32:49,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:32:49,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:32:49,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:32:49,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:32:49,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:32:49,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:32:49,713 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:32:49,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:32:49,714 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:32:49,714 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:32:49,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:32:49,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:32:49,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:32:49,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:32:49,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:32:49,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:32:49,716 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:32:49,716 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:32:49,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:32:49,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:32:49,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:32:49,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:32:49,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:32:49,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:32:49,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:49,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:32:49,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:32:49,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:32:49,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:32:49,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:32:49,721 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:32:49,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:32:49,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:32:49,722 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_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce [2022-11-20 12:32:50,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:32:50,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:32:50,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:32:50,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:32:50,127 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:32:50,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/test-context1.wvr.c [2022-11-20 12:32:53,852 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:32:54,160 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:32:54,160 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/sv-benchmarks/c/weaver/test-context1.wvr.c [2022-11-20 12:32:54,169 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/data/2bde0c94f/ed2737ecd4184154bb5fdb32be48aa50/FLAG1c36cfc50 [2022-11-20 12:32:54,187 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/data/2bde0c94f/ed2737ecd4184154bb5fdb32be48aa50 [2022-11-20 12:32:54,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:32:54,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:32:54,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:54,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:32:54,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:32:54,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f1527c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54, skipping insertion in model container [2022-11-20 12:32:54,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:32:54,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:32:54,431 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-11-20 12:32:54,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:54,470 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:32:54,496 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-11-20 12:32:54,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:54,518 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:32:54,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54 WrapperNode [2022-11-20 12:32:54,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:54,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:54,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:32:54,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:32:54,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,582 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 149 [2022-11-20 12:32:54,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:54,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:32:54,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:32:54,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:32:54,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,613 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:32:54,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:32:54,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:32:54,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:32:54,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (1/1) ... [2022-11-20 12:32:54,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:54,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:54,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:32:54,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:32:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:32:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:32:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:32:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:32:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:32:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:32:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:32:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:32:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:32:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:32:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:32:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:32:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:32:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:32:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:32:54,722 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:32:54,920 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:32:54,923 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:32:55,401 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:32:55,743 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:32:55,744 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:32:55,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:55 BoogieIcfgContainer [2022-11-20 12:32:55,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:32:55,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:32:55,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:32:55,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:32:55,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:32:54" (1/3) ... [2022-11-20 12:32:55,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395a64e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:55, skipping insertion in model container [2022-11-20 12:32:55,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:54" (2/3) ... [2022-11-20 12:32:55,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395a64e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:55, skipping insertion in model container [2022-11-20 12:32:55,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:55" (3/3) ... [2022-11-20 12:32:55,757 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-11-20 12:32:55,767 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:32:55,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:32:55,781 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-20 12:32:55,782 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:32:55,865 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:32:55,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 131 transitions, 278 flow [2022-11-20 12:32:55,997 INFO L130 PetriNetUnfolder]: 9/129 cut-off events. [2022-11-20 12:32:55,997 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:32:56,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 9/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 134 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-11-20 12:32:56,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 131 transitions, 278 flow [2022-11-20 12:32:56,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 110 transitions, 229 flow [2022-11-20 12:32:56,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:32:56,035 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;@4fb8af1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:32:56,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-20 12:32:56,056 INFO L130 PetriNetUnfolder]: 3/60 cut-off events. [2022-11-20 12:32:56,057 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:32:56,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:56,058 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] [2022-11-20 12:32:56,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:32:56,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:56,066 INFO L85 PathProgramCache]: Analyzing trace with hash -329370428, now seen corresponding path program 1 times [2022-11-20 12:32:56,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:56,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361965789] [2022-11-20 12:32:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:56,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:56,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:56,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361965789] [2022-11-20 12:32:56,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361965789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:56,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:56,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:56,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900832707] [2022-11-20 12:32:56,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:56,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:56,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:56,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:56,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:56,718 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-11-20 12:32:56,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 110 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:56,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:56,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-11-20 12:32:56,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:56,967 INFO L130 PetriNetUnfolder]: 41/208 cut-off events. [2022-11-20 12:32:56,968 INFO L131 PetriNetUnfolder]: For 28/34 co-relation queries the response was YES. [2022-11-20 12:32:56,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 208 events. 41/208 cut-off events. For 28/34 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 603 event pairs, 22 based on Foata normal form. 20/168 useless extension candidates. Maximal degree in co-relation 152. Up to 52 conditions per place. [2022-11-20 12:32:56,973 INFO L137 encePairwiseOnDemand]: 114/131 looper letters, 36 selfloop transitions, 4 changer transitions 2/117 dead transitions. [2022-11-20 12:32:56,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 117 transitions, 332 flow [2022-11-20 12:32:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:57,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2022-11-20 12:32:57,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8198473282442749 [2022-11-20 12:32:57,013 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2022-11-20 12:32:57,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2022-11-20 12:32:57,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:57,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2022-11-20 12:32:57,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:57,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:57,036 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:57,038 INFO L175 Difference]: Start difference. First operand has 109 places, 110 transitions, 229 flow. Second operand 5 states and 537 transitions. [2022-11-20 12:32:57,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 117 transitions, 332 flow [2022-11-20 12:32:57,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 117 transitions, 322 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:32:57,049 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 228 flow [2022-11-20 12:32:57,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2022-11-20 12:32:57,065 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, -2 predicate places. [2022-11-20 12:32:57,066 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 228 flow [2022-11-20 12:32:57,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:57,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:57,068 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:57,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:32:57,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:32:57,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:57,071 INFO L85 PathProgramCache]: Analyzing trace with hash -388364503, now seen corresponding path program 1 times [2022-11-20 12:32:57,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:57,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703828353] [2022-11-20 12:32:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:57,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:57,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:57,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703828353] [2022-11-20 12:32:57,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703828353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:57,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:57,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:57,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130801253] [2022-11-20 12:32:57,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:57,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:57,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:57,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:57,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:57,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2022-11-20 12:32:57,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:57,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:57,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2022-11-20 12:32:57,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:57,699 INFO L130 PetriNetUnfolder]: 69/342 cut-off events. [2022-11-20 12:32:57,700 INFO L131 PetriNetUnfolder]: For 13/15 co-relation queries the response was YES. [2022-11-20 12:32:57,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 342 events. 69/342 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1455 event pairs, 2 based on Foata normal form. 6/256 useless extension candidates. Maximal degree in co-relation 270. Up to 93 conditions per place. [2022-11-20 12:32:57,707 INFO L137 encePairwiseOnDemand]: 121/131 looper letters, 17 selfloop transitions, 5 changer transitions 1/110 dead transitions. [2022-11-20 12:32:57,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 110 transitions, 298 flow [2022-11-20 12:32:57,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:32:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:32:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2022-11-20 12:32:57,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8549618320610687 [2022-11-20 12:32:57,711 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2022-11-20 12:32:57,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2022-11-20 12:32:57,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:57,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2022-11-20 12:32:57,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:57,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:57,718 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:57,718 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 228 flow. Second operand 4 states and 448 transitions. [2022-11-20 12:32:57,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 110 transitions, 298 flow [2022-11-20 12:32:57,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 110 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:32:57,727 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 273 flow [2022-11-20 12:32:57,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2022-11-20 12:32:57,728 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 0 predicate places. [2022-11-20 12:32:57,729 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 273 flow [2022-11-20 12:32:57,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:57,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:57,732 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] [2022-11-20 12:32:57,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:32:57,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:32:57,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:57,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1847294572, now seen corresponding path program 1 times [2022-11-20 12:32:57,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:57,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055632219] [2022-11-20 12:32:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:57,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:57,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:57,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055632219] [2022-11-20 12:32:57,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055632219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:32:57,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208684478] [2022-11-20 12:32:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:57,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:57,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:57,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:57,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:32:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:58,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:32:58,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:58,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:32:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:58,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208684478] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:32:58,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:32:58,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:32:58,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965251391] [2022-11-20 12:32:58,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:32:58,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:32:58,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:58,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:32:58,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:32:58,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-11-20 12:32:58,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 273 flow. Second operand has 12 states, 12 states have (on average 97.66666666666667) internal successors, (1172), 12 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:58,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:58,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-11-20 12:32:58,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:58,979 INFO L130 PetriNetUnfolder]: 161/778 cut-off events. [2022-11-20 12:32:58,979 INFO L131 PetriNetUnfolder]: For 195/220 co-relation queries the response was YES. [2022-11-20 12:32:58,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 778 events. 161/778 cut-off events. For 195/220 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4253 event pairs, 70 based on Foata normal form. 3/571 useless extension candidates. Maximal degree in co-relation 356. Up to 221 conditions per place. [2022-11-20 12:32:58,993 INFO L137 encePairwiseOnDemand]: 124/131 looper letters, 93 selfloop transitions, 18 changer transitions 0/186 dead transitions. [2022-11-20 12:32:58,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 186 transitions, 827 flow [2022-11-20 12:32:58,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:32:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:32:58,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1809 transitions. [2022-11-20 12:32:59,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.767175572519084 [2022-11-20 12:32:59,001 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1809 transitions. [2022-11-20 12:32:59,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1809 transitions. [2022-11-20 12:32:59,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:59,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1809 transitions. [2022-11-20 12:32:59,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 100.5) internal successors, (1809), 18 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:59,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 131.0) internal successors, (2489), 19 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:59,019 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 131.0) internal successors, (2489), 19 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:59,019 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 273 flow. Second operand 18 states and 1809 transitions. [2022-11-20 12:32:59,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 186 transitions, 827 flow [2022-11-20 12:32:59,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 186 transitions, 816 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:32:59,031 INFO L231 Difference]: Finished difference. Result has 129 places, 115 transitions, 376 flow [2022-11-20 12:32:59,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=376, PETRI_PLACES=129, PETRI_TRANSITIONS=115} [2022-11-20 12:32:59,034 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 20 predicate places. [2022-11-20 12:32:59,035 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 115 transitions, 376 flow [2022-11-20 12:32:59,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 97.66666666666667) internal successors, (1172), 12 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:59,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:59,036 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] [2022-11-20 12:32:59,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:59,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:59,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:32:59,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:59,253 INFO L85 PathProgramCache]: Analyzing trace with hash 875700624, now seen corresponding path program 1 times [2022-11-20 12:32:59,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:59,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998535099] [2022-11-20 12:32:59,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:59,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:59,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:59,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998535099] [2022-11-20 12:32:59,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998535099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:32:59,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152598726] [2022-11-20 12:32:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:59,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:59,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:59,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:59,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:32:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:59,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:32:59,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:00,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:33:00,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152598726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:00,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:33:00,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 11 [2022-11-20 12:33:00,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083694275] [2022-11-20 12:33:00,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:00,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:33:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:33:00,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:33:00,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 131 [2022-11-20 12:33:00,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 115 transitions, 376 flow. Second operand has 8 states, 8 states have (on average 91.875) internal successors, (735), 8 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:00,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:00,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 131 [2022-11-20 12:33:00,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:00,484 INFO L130 PetriNetUnfolder]: 101/591 cut-off events. [2022-11-20 12:33:00,484 INFO L131 PetriNetUnfolder]: For 194/198 co-relation queries the response was YES. [2022-11-20 12:33:00,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 591 events. 101/591 cut-off events. For 194/198 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2913 event pairs, 48 based on Foata normal form. 14/466 useless extension candidates. Maximal degree in co-relation 852. Up to 213 conditions per place. [2022-11-20 12:33:00,489 INFO L137 encePairwiseOnDemand]: 119/131 looper letters, 30 selfloop transitions, 8 changer transitions 4/119 dead transitions. [2022-11-20 12:33:00,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 119 transitions, 466 flow [2022-11-20 12:33:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:33:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:33:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 846 transitions. [2022-11-20 12:33:00,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7175572519083969 [2022-11-20 12:33:00,494 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 846 transitions. [2022-11-20 12:33:00,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 846 transitions. [2022-11-20 12:33:00,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:00,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 846 transitions. [2022-11-20 12:33:00,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:00,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:00,504 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:00,504 INFO L175 Difference]: Start difference. First operand has 129 places, 115 transitions, 376 flow. Second operand 9 states and 846 transitions. [2022-11-20 12:33:00,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 119 transitions, 466 flow [2022-11-20 12:33:00,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 119 transitions, 426 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-11-20 12:33:00,519 INFO L231 Difference]: Finished difference. Result has 132 places, 113 transitions, 348 flow [2022-11-20 12:33:00,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=348, PETRI_PLACES=132, PETRI_TRANSITIONS=113} [2022-11-20 12:33:00,522 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 23 predicate places. [2022-11-20 12:33:00,523 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 113 transitions, 348 flow [2022-11-20 12:33:00,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.875) internal successors, (735), 8 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:00,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:00,524 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] [2022-11-20 12:33:00,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:33:00,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 12:33:00,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:33:00,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1431557263, now seen corresponding path program 1 times [2022-11-20 12:33:00,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:00,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247795327] [2022-11-20 12:33:00,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:00,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:00,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:00,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247795327] [2022-11-20 12:33:00,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247795327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:33:00,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279272067] [2022-11-20 12:33:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:00,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:00,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:00,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:00,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:33:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:00,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:33:01,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:01,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:33:01,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279272067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:01,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:33:01,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:33:01,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078296415] [2022-11-20 12:33:01,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:01,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:33:01,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:01,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:33:01,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:33:01,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-11-20 12:33:01,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 113 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:01,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:01,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-11-20 12:33:01,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:01,332 INFO L130 PetriNetUnfolder]: 93/545 cut-off events. [2022-11-20 12:33:01,333 INFO L131 PetriNetUnfolder]: For 175/187 co-relation queries the response was YES. [2022-11-20 12:33:01,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 545 events. 93/545 cut-off events. For 175/187 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2628 event pairs, 36 based on Foata normal form. 4/429 useless extension candidates. Maximal degree in co-relation 970. Up to 184 conditions per place. [2022-11-20 12:33:01,338 INFO L137 encePairwiseOnDemand]: 126/131 looper letters, 27 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2022-11-20 12:33:01,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 113 transitions, 415 flow [2022-11-20 12:33:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:33:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:33:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 692 transitions. [2022-11-20 12:33:01,342 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7546346782988005 [2022-11-20 12:33:01,343 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 692 transitions. [2022-11-20 12:33:01,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 692 transitions. [2022-11-20 12:33:01,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:01,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 692 transitions. [2022-11-20 12:33:01,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:01,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:01,350 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:01,350 INFO L175 Difference]: Start difference. First operand has 132 places, 113 transitions, 348 flow. Second operand 7 states and 692 transitions. [2022-11-20 12:33:01,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 113 transitions, 415 flow [2022-11-20 12:33:01,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 113 transitions, 397 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-20 12:33:01,356 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 333 flow [2022-11-20 12:33:01,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2022-11-20 12:33:01,360 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 15 predicate places. [2022-11-20 12:33:01,361 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 333 flow [2022-11-20 12:33:01,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:01,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:01,362 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] [2022-11-20 12:33:01,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:33:01,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:01,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:33:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash -940411592, now seen corresponding path program 1 times [2022-11-20 12:33:01,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:01,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436136299] [2022-11-20 12:33:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:01,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:01,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:33:01,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:01,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436136299] [2022-11-20 12:33:01,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436136299] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:33:01,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583730142] [2022-11-20 12:33:01,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:01,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:01,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:01,820 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:01,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:33:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:01,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:33:01,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:02,273 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 15 treesize of output 3 [2022-11-20 12:33:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:33:02,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:33:02,365 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 15 treesize of output 4 [2022-11-20 12:33:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:33:03,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583730142] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:33:03,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:33:03,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-20 12:33:03,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587729207] [2022-11-20 12:33:03,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:33:03,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:33:03,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:03,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:33:03,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:33:03,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2022-11-20 12:33:03,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 333 flow. Second operand has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:03,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:03,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2022-11-20 12:33:03,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:03,435 INFO L130 PetriNetUnfolder]: 205/1197 cut-off events. [2022-11-20 12:33:03,435 INFO L131 PetriNetUnfolder]: For 349/353 co-relation queries the response was YES. [2022-11-20 12:33:03,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2143 conditions, 1197 events. 205/1197 cut-off events. For 349/353 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8118 event pairs, 0 based on Foata normal form. 4/961 useless extension candidates. Maximal degree in co-relation 2060. Up to 297 conditions per place. [2022-11-20 12:33:03,444 INFO L137 encePairwiseOnDemand]: 123/131 looper letters, 21 selfloop transitions, 31 changer transitions 4/151 dead transitions. [2022-11-20 12:33:03,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 151 transitions, 630 flow [2022-11-20 12:33:03,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:33:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:33:03,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1424 transitions. [2022-11-20 12:33:03,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8361714621256606 [2022-11-20 12:33:03,449 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1424 transitions. [2022-11-20 12:33:03,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1424 transitions. [2022-11-20 12:33:03,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:03,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1424 transitions. [2022-11-20 12:33:03,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 109.53846153846153) internal successors, (1424), 13 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:03,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 131.0) internal successors, (1834), 14 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:03,459 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 131.0) internal successors, (1834), 14 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:03,459 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 333 flow. Second operand 13 states and 1424 transitions. [2022-11-20 12:33:03,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 151 transitions, 630 flow [2022-11-20 12:33:03,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 151 transitions, 616 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:33:03,464 INFO L231 Difference]: Finished difference. Result has 139 places, 138 transitions, 605 flow [2022-11-20 12:33:03,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=605, PETRI_PLACES=139, PETRI_TRANSITIONS=138} [2022-11-20 12:33:03,465 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 30 predicate places. [2022-11-20 12:33:03,465 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 138 transitions, 605 flow [2022-11-20 12:33:03,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:03,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:03,467 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:33:03,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 12:33:03,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:03,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:33:03,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash 270648615, now seen corresponding path program 1 times [2022-11-20 12:33:03,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:03,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284230331] [2022-11-20 12:33:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:03,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:33:04,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:04,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284230331] [2022-11-20 12:33:04,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284230331] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:33:04,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266968251] [2022-11-20 12:33:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:04,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:04,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:04,083 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:04,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:33:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:04,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:33:04,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:33:04,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:33:04,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266968251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:04,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:33:04,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-11-20 12:33:04,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33723486] [2022-11-20 12:33:04,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:04,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:33:04,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:33:04,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:33:04,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 131 [2022-11-20 12:33:04,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 138 transitions, 605 flow. Second operand has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:04,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:04,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 131 [2022-11-20 12:33:04,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:04,741 INFO L130 PetriNetUnfolder]: 113/865 cut-off events. [2022-11-20 12:33:04,741 INFO L131 PetriNetUnfolder]: For 1105/1109 co-relation queries the response was YES. [2022-11-20 12:33:04,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 865 events. 113/865 cut-off events. For 1105/1109 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5264 event pairs, 28 based on Foata normal form. 40/789 useless extension candidates. Maximal degree in co-relation 1717. Up to 232 conditions per place. [2022-11-20 12:33:04,748 INFO L137 encePairwiseOnDemand]: 125/131 looper letters, 31 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2022-11-20 12:33:04,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 125 transitions, 562 flow [2022-11-20 12:33:04,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:33:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:33:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 511 transitions. [2022-11-20 12:33:04,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7801526717557252 [2022-11-20 12:33:04,752 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 511 transitions. [2022-11-20 12:33:04,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 511 transitions. [2022-11-20 12:33:04,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:04,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 511 transitions. [2022-11-20 12:33:04,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:04,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:04,757 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:04,757 INFO L175 Difference]: Start difference. First operand has 139 places, 138 transitions, 605 flow. Second operand 5 states and 511 transitions. [2022-11-20 12:33:04,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 125 transitions, 562 flow [2022-11-20 12:33:04,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 125 transitions, 490 flow, removed 29 selfloop flow, removed 4 redundant places. [2022-11-20 12:33:04,766 INFO L231 Difference]: Finished difference. Result has 136 places, 125 transitions, 428 flow [2022-11-20 12:33:04,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=136, PETRI_TRANSITIONS=125} [2022-11-20 12:33:04,768 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 27 predicate places. [2022-11-20 12:33:04,768 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 125 transitions, 428 flow [2022-11-20 12:33:04,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:04,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:04,769 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:33:04,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:33:04,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:04,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:33:04,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:04,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1804843950, now seen corresponding path program 1 times [2022-11-20 12:33:04,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:04,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874366977] [2022-11-20 12:33:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:33:05,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:05,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874366977] [2022-11-20 12:33:05,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874366977] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:33:05,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33139148] [2022-11-20 12:33:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:05,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:05,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:05,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:05,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:33:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:05,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:33:05,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:33:06,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:33:06,158 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 15 treesize of output 4 [2022-11-20 12:33:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:33:06,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33139148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:33:06,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:33:06,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 24 [2022-11-20 12:33:06,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255062818] [2022-11-20 12:33:06,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:33:06,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:33:06,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:06,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:33:06,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:33:06,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 131 [2022-11-20 12:33:06,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 125 transitions, 428 flow. Second operand has 24 states, 24 states have (on average 87.91666666666667) internal successors, (2110), 24 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:06,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:06,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 131 [2022-11-20 12:33:06,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:07,763 INFO L130 PetriNetUnfolder]: 81/675 cut-off events. [2022-11-20 12:33:07,763 INFO L131 PetriNetUnfolder]: For 337/340 co-relation queries the response was YES. [2022-11-20 12:33:07,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 675 events. 81/675 cut-off events. For 337/340 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3638 event pairs, 18 based on Foata normal form. 8/602 useless extension candidates. Maximal degree in co-relation 1180. Up to 134 conditions per place. [2022-11-20 12:33:07,768 INFO L137 encePairwiseOnDemand]: 116/131 looper letters, 48 selfloop transitions, 20 changer transitions 9/142 dead transitions. [2022-11-20 12:33:07,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 142 transitions, 634 flow [2022-11-20 12:33:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:33:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:33:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1332 transitions. [2022-11-20 12:33:07,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6778625954198473 [2022-11-20 12:33:07,774 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1332 transitions. [2022-11-20 12:33:07,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1332 transitions. [2022-11-20 12:33:07,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:07,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1332 transitions. [2022-11-20 12:33:07,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.8) internal successors, (1332), 15 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:07,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 131.0) internal successors, (2096), 16 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:07,785 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 131.0) internal successors, (2096), 16 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:07,785 INFO L175 Difference]: Start difference. First operand has 136 places, 125 transitions, 428 flow. Second operand 15 states and 1332 transitions. [2022-11-20 12:33:07,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 142 transitions, 634 flow [2022-11-20 12:33:07,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 626 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:33:07,792 INFO L231 Difference]: Finished difference. Result has 151 places, 125 transitions, 484 flow [2022-11-20 12:33:07,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=484, PETRI_PLACES=151, PETRI_TRANSITIONS=125} [2022-11-20 12:33:07,793 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 42 predicate places. [2022-11-20 12:33:07,794 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 125 transitions, 484 flow [2022-11-20 12:33:07,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 87.91666666666667) internal successors, (2110), 24 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:07,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:07,796 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] [2022-11-20 12:33:07,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 12:33:08,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:08,006 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:33:08,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1381978428, now seen corresponding path program 2 times [2022-11-20 12:33:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:08,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790007374] [2022-11-20 12:33:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:08,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:08,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:08,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790007374] [2022-11-20 12:33:08,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790007374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:33:08,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864921273] [2022-11-20 12:33:08,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:33:08,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:08,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:08,276 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:08,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:33:08,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:33:08,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:33:08,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:33:08,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:33:08,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:33:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:33:08,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864921273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:33:08,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:33:08,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 12:33:08,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089860160] [2022-11-20 12:33:08,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:33:08,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:33:08,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:33:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:33:08,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 131 [2022-11-20 12:33:08,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 125 transitions, 484 flow. Second operand has 18 states, 18 states have (on average 88.61111111111111) internal successors, (1595), 18 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:08,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:08,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 131 [2022-11-20 12:33:08,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:09,696 INFO L130 PetriNetUnfolder]: 131/959 cut-off events. [2022-11-20 12:33:09,697 INFO L131 PetriNetUnfolder]: For 743/748 co-relation queries the response was YES. [2022-11-20 12:33:09,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 959 events. 131/959 cut-off events. For 743/748 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5810 event pairs, 35 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 1853. Up to 100 conditions per place. [2022-11-20 12:33:09,705 INFO L137 encePairwiseOnDemand]: 120/131 looper letters, 155 selfloop transitions, 25 changer transitions 0/247 dead transitions. [2022-11-20 12:33:09,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 247 transitions, 1519 flow [2022-11-20 12:33:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:33:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 12:33:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2132 transitions. [2022-11-20 12:33:09,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.678117048346056 [2022-11-20 12:33:09,712 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2132 transitions. [2022-11-20 12:33:09,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2132 transitions. [2022-11-20 12:33:09,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:09,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2132 transitions. [2022-11-20 12:33:09,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 88.83333333333333) internal successors, (2132), 24 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:09,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 131.0) internal successors, (3275), 25 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:09,730 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 131.0) internal successors, (3275), 25 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:09,730 INFO L175 Difference]: Start difference. First operand has 151 places, 125 transitions, 484 flow. Second operand 24 states and 2132 transitions. [2022-11-20 12:33:09,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 247 transitions, 1519 flow [2022-11-20 12:33:09,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 247 transitions, 1422 flow, removed 25 selfloop flow, removed 16 redundant places. [2022-11-20 12:33:09,741 INFO L231 Difference]: Finished difference. Result has 155 places, 129 transitions, 518 flow [2022-11-20 12:33:09,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=518, PETRI_PLACES=155, PETRI_TRANSITIONS=129} [2022-11-20 12:33:09,742 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 46 predicate places. [2022-11-20 12:33:09,743 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 129 transitions, 518 flow [2022-11-20 12:33:09,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 88.61111111111111) internal successors, (1595), 18 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:09,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:09,744 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 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] [2022-11-20 12:33:09,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:33:09,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:09,956 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:33:09,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash 670930774, now seen corresponding path program 2 times [2022-11-20 12:33:09,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:09,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807352786] [2022-11-20 12:33:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:09,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:33:10,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:10,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807352786] [2022-11-20 12:33:10,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807352786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:33:10,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510067406] [2022-11-20 12:33:10,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:33:10,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:10,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:10,407 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:10,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:33:10,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:33:10,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:33:10,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:33:10,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:11,242 INFO L321 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-11-20 12:33:11,243 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 46 treesize of output 10 [2022-11-20 12:33:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:33:11,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:33:11,847 INFO L321 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-11-20 12:33:11,848 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 47 treesize of output 13 [2022-11-20 12:33:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:33:12,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510067406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:33:12,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:33:12,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2022-11-20 12:33:12,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212685720] [2022-11-20 12:33:12,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:33:12,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 12:33:12,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:12,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 12:33:12,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:33:12,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 131 [2022-11-20 12:33:12,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 129 transitions, 518 flow. Second operand has 23 states, 23 states have (on average 81.17391304347827) internal successors, (1867), 23 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:12,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:12,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 131 [2022-11-20 12:33:12,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:16,874 INFO L130 PetriNetUnfolder]: 1269/5041 cut-off events. [2022-11-20 12:33:16,875 INFO L131 PetriNetUnfolder]: For 3284/3304 co-relation queries the response was YES. [2022-11-20 12:33:16,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10188 conditions, 5041 events. 1269/5041 cut-off events. For 3284/3304 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 46081 event pairs, 0 based on Foata normal form. 154/4764 useless extension candidates. Maximal degree in co-relation 10171. Up to 750 conditions per place. [2022-11-20 12:33:16,920 INFO L137 encePairwiseOnDemand]: 112/131 looper letters, 117 selfloop transitions, 117 changer transitions 90/381 dead transitions. [2022-11-20 12:33:16,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 381 transitions, 2138 flow [2022-11-20 12:33:16,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 12:33:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 12:33:16,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4046 transitions. [2022-11-20 12:33:16,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6303162486368593 [2022-11-20 12:33:16,930 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 4046 transitions. [2022-11-20 12:33:16,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 4046 transitions. [2022-11-20 12:33:16,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:16,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 4046 transitions. [2022-11-20 12:33:16,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 82.57142857142857) internal successors, (4046), 49 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:16,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 131.0) internal successors, (6550), 50 states have internal predecessors, (6550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:16,969 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 131.0) internal successors, (6550), 50 states have internal predecessors, (6550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:16,977 INFO L175 Difference]: Start difference. First operand has 155 places, 129 transitions, 518 flow. Second operand 49 states and 4046 transitions. [2022-11-20 12:33:16,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 381 transitions, 2138 flow [2022-11-20 12:33:17,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 381 transitions, 2073 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-20 12:33:17,019 INFO L231 Difference]: Finished difference. Result has 189 places, 223 transitions, 1254 flow [2022-11-20 12:33:17,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1254, PETRI_PLACES=189, PETRI_TRANSITIONS=223} [2022-11-20 12:33:17,021 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 80 predicate places. [2022-11-20 12:33:17,022 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 223 transitions, 1254 flow [2022-11-20 12:33:17,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 81.17391304347827) internal successors, (1867), 23 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:17,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:17,025 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:33:17,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:33:17,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:33:17,231 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:33:17,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:17,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1704427106, now seen corresponding path program 1 times [2022-11-20 12:33:17,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:17,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751321585] [2022-11-20 12:33:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:17,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 12:33:17,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:17,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751321585] [2022-11-20 12:33:17,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751321585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:17,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:17,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:33:17,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663531950] [2022-11-20 12:33:17,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:17,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:33:17,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:17,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:33:17,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:33:17,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 131 [2022-11-20 12:33:17,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 223 transitions, 1254 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:17,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:17,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 131 [2022-11-20 12:33:17,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:18,295 INFO L130 PetriNetUnfolder]: 617/3711 cut-off events. [2022-11-20 12:33:18,295 INFO L131 PetriNetUnfolder]: For 4468/4576 co-relation queries the response was YES. [2022-11-20 12:33:18,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7742 conditions, 3711 events. 617/3711 cut-off events. For 4468/4576 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 36343 event pairs, 92 based on Foata normal form. 220/3519 useless extension candidates. Maximal degree in co-relation 7721. Up to 1073 conditions per place. [2022-11-20 12:33:18,327 INFO L137 encePairwiseOnDemand]: 129/131 looper letters, 90 selfloop transitions, 1 changer transitions 4/202 dead transitions. [2022-11-20 12:33:18,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 202 transitions, 1245 flow [2022-11-20 12:33:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:33:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:33:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2022-11-20 12:33:18,329 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.821882951653944 [2022-11-20 12:33:18,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2022-11-20 12:33:18,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2022-11-20 12:33:18,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:18,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2022-11-20 12:33:18,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:18,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:18,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:18,333 INFO L175 Difference]: Start difference. First operand has 189 places, 223 transitions, 1254 flow. Second operand 3 states and 323 transitions. [2022-11-20 12:33:18,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 202 transitions, 1245 flow [2022-11-20 12:33:18,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 202 transitions, 1091 flow, removed 16 selfloop flow, removed 21 redundant places. [2022-11-20 12:33:18,364 INFO L231 Difference]: Finished difference. Result has 160 places, 198 transitions, 890 flow [2022-11-20 12:33:18,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=890, PETRI_PLACES=160, PETRI_TRANSITIONS=198} [2022-11-20 12:33:18,366 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 51 predicate places. [2022-11-20 12:33:18,367 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 198 transitions, 890 flow [2022-11-20 12:33:18,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:18,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:18,367 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:33:18,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:33:18,368 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-11-20 12:33:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:18,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1385407845, now seen corresponding path program 3 times [2022-11-20 12:33:18,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:18,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732112052] [2022-11-20 12:33:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:18,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:33:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:18,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732112052] [2022-11-20 12:33:18,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732112052] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:33:18,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107193111] [2022-11-20 12:33:18,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:33:18,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:18,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:18,850 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:18,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:33:18,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:33:18,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:33:18,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:33:18,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:19,190 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 15 treesize of output 3 [2022-11-20 12:33:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 12:33:19,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:33:19,337 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 15 treesize of output 4 [2022-11-20 12:33:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 12:33:19,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107193111] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:33:19,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:33:19,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 17 [2022-11-20 12:33:19,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210031349] [2022-11-20 12:33:19,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:33:19,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:33:19,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:19,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:33:19,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:33:19,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 131 [2022-11-20 12:33:19,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 198 transitions, 890 flow. Second operand has 18 states, 18 states have (on average 85.94444444444444) internal successors, (1547), 18 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:19,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:19,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 131 [2022-11-20 12:33:19,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:20,648 INFO L130 PetriNetUnfolder]: 385/2715 cut-off events. [2022-11-20 12:33:20,649 INFO L131 PetriNetUnfolder]: For 1433/1433 co-relation queries the response was YES. [2022-11-20 12:33:20,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4930 conditions, 2715 events. 385/2715 cut-off events. For 1433/1433 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 24324 event pairs, 28 based on Foata normal form. 44/2431 useless extension candidates. Maximal degree in co-relation 4916. Up to 356 conditions per place. [2022-11-20 12:33:20,669 INFO L137 encePairwiseOnDemand]: 117/131 looper letters, 0 selfloop transitions, 0 changer transitions 295/295 dead transitions. [2022-11-20 12:33:20,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 295 transitions, 1861 flow [2022-11-20 12:33:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:33:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 12:33:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1956 transitions. [2022-11-20 12:33:20,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6491868569532028 [2022-11-20 12:33:20,674 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1956 transitions. [2022-11-20 12:33:20,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1956 transitions. [2022-11-20 12:33:20,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:20,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1956 transitions. [2022-11-20 12:33:20,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 85.04347826086956) internal successors, (1956), 23 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:20,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 131.0) internal successors, (3144), 24 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:20,685 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 131.0) internal successors, (3144), 24 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:20,685 INFO L175 Difference]: Start difference. First operand has 160 places, 198 transitions, 890 flow. Second operand 23 states and 1956 transitions. [2022-11-20 12:33:20,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 295 transitions, 1861 flow [2022-11-20 12:33:20,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 295 transitions, 1860 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:33:20,694 INFO L231 Difference]: Finished difference. Result has 173 places, 0 transitions, 0 flow [2022-11-20 12:33:20,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=173, PETRI_TRANSITIONS=0} [2022-11-20 12:33:20,697 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 64 predicate places. [2022-11-20 12:33:20,698 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 0 transitions, 0 flow [2022-11-20 12:33:20,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 85.94444444444444) internal successors, (1547), 18 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:20,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2022-11-20 12:33:20,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2022-11-20 12:33:20,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2022-11-20 12:33:20,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2022-11-20 12:33:20,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2022-11-20 12:33:20,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2022-11-20 12:33:20,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2022-11-20 12:33:20,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2022-11-20 12:33:20,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2022-11-20 12:33:20,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2022-11-20 12:33:20,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2022-11-20 12:33:20,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2022-11-20 12:33:20,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2022-11-20 12:33:20,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2022-11-20 12:33:20,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 28 remaining) [2022-11-20 12:33:20,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 28 remaining) [2022-11-20 12:33:20,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2022-11-20 12:33:20,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2022-11-20 12:33:20,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2022-11-20 12:33:20,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2022-11-20 12:33:20,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2022-11-20 12:33:20,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2022-11-20 12:33:20,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2022-11-20 12:33:20,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2022-11-20 12:33:20,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2022-11-20 12:33:20,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2022-11-20 12:33:20,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2022-11-20 12:33:20,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2022-11-20 12:33:20,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:33:20,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:20,914 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:33:20,920 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:33:20,920 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:33:20,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:33:20 BasicIcfg [2022-11-20 12:33:20,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:33:20,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:33:20,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:33:20,926 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:33:20,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:55" (3/4) ... [2022-11-20 12:33:20,929 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:33:20,935 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 12:33:20,935 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 12:33:20,945 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 12:33:20,945 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:33:20,946 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:33:20,946 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:33:20,994 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:33:20,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:33:20,996 INFO L158 Benchmark]: Toolchain (without parser) took 26803.23ms. Allocated memory was 188.7MB in the beginning and 394.3MB in the end (delta: 205.5MB). Free memory was 143.5MB in the beginning and 282.1MB in the end (delta: -138.6MB). Peak memory consumption was 68.0MB. Max. memory is 16.1GB. [2022-11-20 12:33:20,996 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 132.1MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:33:20,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.26ms. Allocated memory is still 188.7MB. Free memory was 143.5MB in the beginning and 132.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:33:20,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.20ms. Allocated memory is still 188.7MB. Free memory was 132.0MB in the beginning and 130.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:33:20,997 INFO L158 Benchmark]: Boogie Preprocessor took 33.79ms. Allocated memory is still 188.7MB. Free memory was 130.3MB in the beginning and 128.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:33:20,997 INFO L158 Benchmark]: RCFGBuilder took 1114.63ms. Allocated memory is still 188.7MB. Free memory was 128.8MB in the beginning and 143.9MB in the end (delta: -15.1MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2022-11-20 12:33:20,998 INFO L158 Benchmark]: TraceAbstraction took 25176.01ms. Allocated memory was 188.7MB in the beginning and 394.3MB in the end (delta: 205.5MB). Free memory was 143.9MB in the beginning and 284.8MB in the end (delta: -140.9MB). Peak memory consumption was 262.7MB. Max. memory is 16.1GB. [2022-11-20 12:33:20,998 INFO L158 Benchmark]: Witness Printer took 69.68ms. Allocated memory is still 394.3MB. Free memory was 284.8MB in the beginning and 282.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:33:21,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 132.1MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.26ms. Allocated memory is still 188.7MB. Free memory was 143.5MB in the beginning and 132.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.20ms. Allocated memory is still 188.7MB. Free memory was 132.0MB in the beginning and 130.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.79ms. Allocated memory is still 188.7MB. Free memory was 130.3MB in the beginning and 128.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1114.63ms. Allocated memory is still 188.7MB. Free memory was 128.8MB in the beginning and 143.9MB in the end (delta: -15.1MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * TraceAbstraction took 25176.01ms. Allocated memory was 188.7MB in the beginning and 394.3MB in the end (delta: 205.5MB). Free memory was 143.9MB in the beginning and 284.8MB in the end (delta: -140.9MB). Peak memory consumption was 262.7MB. Max. memory is 16.1GB. * Witness Printer took 69.68ms. Allocated memory is still 394.3MB. Free memory was 284.8MB in the beginning and 282.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 151 locations, 28 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.0s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1948 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1948 mSDsluCounter, 354 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 448 IncrementalHoareTripleChecker+Unchecked, 282 mSDsCounter, 198 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1496 IncrementalHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 198 mSolverCounterUnsat, 72 mSDtfsCounter, 1496 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1379 GetRequests, 1127 SyntacticMatches, 9 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2468 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1254occurred in iteration=10, InterpolantAutomatonStates: 175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 1585 NumberOfCodeBlocks, 1520 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2054 ConstructedInterpolants, 7 QuantifiedInterpolants, 10601 SizeOfPredicates, 78 NumberOfNonLiveVariables, 1458 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 347/643 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:33:21,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e41e18e-7812-4976-906f-bdb5e2888802/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE