./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longer-2.i --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_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/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_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/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_ffc7d746-2c5d-4939-a834-c78e0d08e4db/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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- 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 12:10:14,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:14,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:14,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:14,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:14,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:14,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:14,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:14,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:14,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:14,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:14,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:14,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:14,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:14,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:14,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:14,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:14,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:14,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:14,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:14,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:14,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:14,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:14,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:14,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:14,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:14,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:14,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:14,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:14,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:14,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:14,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:14,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:14,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:14,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:14,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:14,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:14,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:14,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:14,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:14,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:14,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:10:14,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:14,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:14,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:14,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:14,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:14,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:14,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:14,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:14,778 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:14,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:14,790 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:10:14,790 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:10:14,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:10:14,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:10:14,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:14,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:10:14,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:14,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:10:14,792 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:10:14,793 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:10:14,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:10:14,793 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:14,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:10:14,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:14,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:14,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:14,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:14,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:14,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:14,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:10:14,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:10:14,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:10:14,798 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:10:14,798 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:10:14,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:10:14,799 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_ffc7d746-2c5d-4939-a834-c78e0d08e4db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2022-11-20 12:10:15,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:15,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:15,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:15,184 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:15,185 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:15,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/stack_longer-2.i [2022-11-20 12:10:19,094 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:10:19,564 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:10:19,565 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/sv-benchmarks/c/pthread/stack_longer-2.i [2022-11-20 12:10:19,585 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/data/5df9d6177/7ca7ff4b80224fc59c9fa4c02919534a/FLAG8eb886904 [2022-11-20 12:10:19,614 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/data/5df9d6177/7ca7ff4b80224fc59c9fa4c02919534a [2022-11-20 12:10:19,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:10:19,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:10:19,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:19,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:10:19,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:10:19,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:19" (1/1) ... [2022-11-20 12:10:19,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233399f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:19, skipping insertion in model container [2022-11-20 12:10:19,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:19" (1/1) ... [2022-11-20 12:10:19,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:10:19,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:20,513 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_ffc7d746-2c5d-4939-a834-c78e0d08e4db/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2022-11-20 12:10:20,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:20,585 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:10:20,657 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_ffc7d746-2c5d-4939-a834-c78e0d08e4db/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2022-11-20 12:10:20,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:20,776 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:10:20,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20 WrapperNode [2022-11-20 12:10:20,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:20,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:20,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:10:20,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:10:20,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (1/1) ... [2022-11-20 12:10:20,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (1/1) ... [2022-11-20 12:10:20,846 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 156 [2022-11-20 12:10:20,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:20,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:10:20,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:10:20,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:10:20,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (1/1) ... [2022-11-20 12:10:20,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (1/1) ... [2022-11-20 12:10:20,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (1/1) ... [2022-11-20 12:10:20,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (1/1) ... [2022-11-20 12:10:20,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (1/1) ... [2022-11-20 12:10:20,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (1/1) ... [2022-11-20 12:10:20,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (1/1) ... [2022-11-20 12:10:20,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (1/1) ... [2022-11-20 12:10:20,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:10:20,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:10:20,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:10:20,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:10:20,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (1/1) ... [2022-11-20 12:10:20,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:20,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:20,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:10:21,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:10:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 12:10:21,047 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 12:10:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 12:10:21,048 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 12:10:21,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:10:21,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:10:21,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:10:21,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:10:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:10:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:10:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:10:21,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:10:21,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:10:21,052 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 12:10:21,334 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:10:21,353 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:10:21,778 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:10:21,790 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:10:21,790 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:10:21,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:21 BoogieIcfgContainer [2022-11-20 12:10:21,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:10:21,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:10:21,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:10:21,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:10:21,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:10:19" (1/3) ... [2022-11-20 12:10:21,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1e8f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:21, skipping insertion in model container [2022-11-20 12:10:21,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:20" (2/3) ... [2022-11-20 12:10:21,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1e8f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:21, skipping insertion in model container [2022-11-20 12:10:21,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:21" (3/3) ... [2022-11-20 12:10:21,806 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2022-11-20 12:10:21,828 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:10:21,849 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:10:21,849 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 12:10:21,850 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:10:22,049 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:10:22,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 184 transitions, 384 flow [2022-11-20 12:10:22,345 INFO L130 PetriNetUnfolder]: 10/182 cut-off events. [2022-11-20 12:10:22,346 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:10:22,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 182 events. 10/182 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 467 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-11-20 12:10:22,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 184 transitions, 384 flow [2022-11-20 12:10:22,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 172 transitions, 353 flow [2022-11-20 12:10:22,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:10:22,419 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;@757d6a67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:10:22,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-20 12:10:22,466 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-11-20 12:10:22,466 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:10:22,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:22,468 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] [2022-11-20 12:10:22,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:22,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:22,477 INFO L85 PathProgramCache]: Analyzing trace with hash 719672581, now seen corresponding path program 1 times [2022-11-20 12:10:22,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:22,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432176821] [2022-11-20 12:10:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:22,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:23,092 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 12:10:23,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:23,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432176821] [2022-11-20 12:10:23,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432176821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:23,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:23,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:23,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877657040] [2022-11-20 12:10:23,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:23,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:10:23,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:23,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:10:23,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:10:23,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 12:10:23,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 172 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 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 12:10:23,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:23,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 12:10:23,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:23,496 INFO L130 PetriNetUnfolder]: 26/292 cut-off events. [2022-11-20 12:10:23,496 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-20 12:10:23,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 292 events. 26/292 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1225 event pairs, 2 based on Foata normal form. 40/302 useless extension candidates. Maximal degree in co-relation 323. Up to 36 conditions per place. [2022-11-20 12:10:23,503 INFO L137 encePairwiseOnDemand]: 172/184 looper letters, 19 selfloop transitions, 4 changer transitions 0/172 dead transitions. [2022-11-20 12:10:23,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 172 transitions, 408 flow [2022-11-20 12:10:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:10:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:10:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 852 transitions. [2022-11-20 12:10:23,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9260869565217391 [2022-11-20 12:10:23,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 852 transitions. [2022-11-20 12:10:23,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 852 transitions. [2022-11-20 12:10:23,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:23,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 852 transitions. [2022-11-20 12:10:23,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.4) internal successors, (852), 5 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 12:10:23,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:23,560 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:23,562 INFO L175 Difference]: Start difference. First operand has 169 places, 172 transitions, 353 flow. Second operand 5 states and 852 transitions. [2022-11-20 12:10:23,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 172 transitions, 408 flow [2022-11-20 12:10:23,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 172 transitions, 397 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:10:23,574 INFO L231 Difference]: Finished difference. Result has 169 places, 166 transitions, 362 flow [2022-11-20 12:10:23,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=169, PETRI_TRANSITIONS=166} [2022-11-20 12:10:23,581 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 0 predicate places. [2022-11-20 12:10:23,582 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 166 transitions, 362 flow [2022-11-20 12:10:23,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 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 12:10:23,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:23,583 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] [2022-11-20 12:10:23,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:10:23,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:23,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1562072646, now seen corresponding path program 1 times [2022-11-20 12:10:23,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:23,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308742279] [2022-11-20 12:10:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:23,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:23,804 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 12:10:23,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:23,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308742279] [2022-11-20 12:10:23,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308742279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:23,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:23,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:23,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949141536] [2022-11-20 12:10:23,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:23,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:23,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:23,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:23,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 184 [2022-11-20 12:10:23,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 166 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 12:10:23,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:23,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 184 [2022-11-20 12:10:23,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:24,245 INFO L130 PetriNetUnfolder]: 144/1251 cut-off events. [2022-11-20 12:10:24,245 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-20 12:10:24,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 1251 events. 144/1251 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7622 event pairs, 63 based on Foata normal form. 0/1096 useless extension candidates. Maximal degree in co-relation 1239. Up to 191 conditions per place. [2022-11-20 12:10:24,266 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 20 selfloop transitions, 3 changer transitions 0/173 dead transitions. [2022-11-20 12:10:24,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 173 transitions, 425 flow [2022-11-20 12:10:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:24,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:10:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2022-11-20 12:10:24,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9148550724637681 [2022-11-20 12:10:24,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2022-11-20 12:10:24,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2022-11-20 12:10:24,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:24,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2022-11-20 12:10:24,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 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 12:10:24,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 12:10:24,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 12:10:24,277 INFO L175 Difference]: Start difference. First operand has 169 places, 166 transitions, 362 flow. Second operand 3 states and 505 transitions. [2022-11-20 12:10:24,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 173 transitions, 425 flow [2022-11-20 12:10:24,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 173 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:10:24,291 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 377 flow [2022-11-20 12:10:24,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2022-11-20 12:10:24,292 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 2 predicate places. [2022-11-20 12:10:24,293 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 377 flow [2022-11-20 12:10:24,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 12:10:24,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:24,295 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] [2022-11-20 12:10:24,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:10:24,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:24,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:24,298 INFO L85 PathProgramCache]: Analyzing trace with hash 220319449, now seen corresponding path program 1 times [2022-11-20 12:10:24,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:24,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770919678] [2022-11-20 12:10:24,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:24,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:24,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:24,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770919678] [2022-11-20 12:10:24,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770919678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:24,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:24,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:24,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393006661] [2022-11-20 12:10:24,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:24,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:10:24,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:10:24,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:10:24,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 12:10:24,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 12:10:24,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:24,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 12:10:24,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:24,778 INFO L130 PetriNetUnfolder]: 96/790 cut-off events. [2022-11-20 12:10:24,778 INFO L131 PetriNetUnfolder]: For 119/120 co-relation queries the response was YES. [2022-11-20 12:10:24,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 790 events. 96/790 cut-off events. For 119/120 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3695 event pairs, 12 based on Foata normal form. 7/719 useless extension candidates. Maximal degree in co-relation 1036. Up to 87 conditions per place. [2022-11-20 12:10:24,791 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 12 selfloop transitions, 8 changer transitions 0/170 dead transitions. [2022-11-20 12:10:24,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 424 flow [2022-11-20 12:10:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:10:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:10:24,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2022-11-20 12:10:24,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-20 12:10:24,795 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2022-11-20 12:10:24,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2022-11-20 12:10:24,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:24,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2022-11-20 12:10:24,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 12:10:24,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:24,805 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:24,805 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 377 flow. Second operand 5 states and 828 transitions. [2022-11-20 12:10:24,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 424 flow [2022-11-20 12:10:24,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:10:24,815 INFO L231 Difference]: Finished difference. Result has 174 places, 167 transitions, 394 flow [2022-11-20 12:10:24,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=174, PETRI_TRANSITIONS=167} [2022-11-20 12:10:24,822 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 5 predicate places. [2022-11-20 12:10:24,822 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 167 transitions, 394 flow [2022-11-20 12:10:24,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 12:10:24,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:24,824 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:10:24,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:10:24,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1760031137, now seen corresponding path program 1 times [2022-11-20 12:10:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:24,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161830019] [2022-11-20 12:10:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:24,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:25,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:25,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161830019] [2022-11-20 12:10:25,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161830019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:25,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86700704] [2022-11-20 12:10:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:25,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:25,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:25,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:25,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:10:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:25,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:10:25,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:25,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:25,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86700704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:25,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:10:25,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:10:25,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005447096] [2022-11-20 12:10:25,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:25,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:10:25,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:10:25,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:10:25,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 12:10:25,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 167 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states 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 12:10:25,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:25,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 12:10:25,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:25,770 INFO L130 PetriNetUnfolder]: 91/774 cut-off events. [2022-11-20 12:10:25,774 INFO L131 PetriNetUnfolder]: For 172/173 co-relation queries the response was YES. [2022-11-20 12:10:25,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 774 events. 91/774 cut-off events. For 172/173 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3581 event pairs, 8 based on Foata normal form. 7/708 useless extension candidates. Maximal degree in co-relation 1059. Up to 65 conditions per place. [2022-11-20 12:10:25,786 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 17 selfloop transitions, 6 changer transitions 0/173 dead transitions. [2022-11-20 12:10:25,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 173 transitions, 455 flow [2022-11-20 12:10:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:10:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:10:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1158 transitions. [2022-11-20 12:10:25,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8990683229813664 [2022-11-20 12:10:25,792 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1158 transitions. [2022-11-20 12:10:25,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1158 transitions. [2022-11-20 12:10:25,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:25,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1158 transitions. [2022-11-20 12:10:25,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.42857142857142) internal successors, (1158), 7 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 12:10:25,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states 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 12:10:25,809 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states 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 12:10:25,809 INFO L175 Difference]: Start difference. First operand has 174 places, 167 transitions, 394 flow. Second operand 7 states and 1158 transitions. [2022-11-20 12:10:25,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 173 transitions, 455 flow [2022-11-20 12:10:25,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 173 transitions, 443 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:10:25,818 INFO L231 Difference]: Finished difference. Result has 176 places, 166 transitions, 390 flow [2022-11-20 12:10:25,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=176, PETRI_TRANSITIONS=166} [2022-11-20 12:10:25,820 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 7 predicate places. [2022-11-20 12:10:25,821 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 166 transitions, 390 flow [2022-11-20 12:10:25,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states 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 12:10:25,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:25,823 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:25,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:26,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:26,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:26,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1034852724, now seen corresponding path program 1 times [2022-11-20 12:10:26,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:26,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816088048] [2022-11-20 12:10:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:26,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:26,256 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 12:10:26,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:26,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816088048] [2022-11-20 12:10:26,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816088048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:26,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:26,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:26,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118648651] [2022-11-20 12:10:26,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:26,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:10:26,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:26,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:10:26,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:10:26,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-20 12:10:26,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 166 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 12:10:26,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:26,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-20 12:10:26,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:26,896 INFO L130 PetriNetUnfolder]: 289/1946 cut-off events. [2022-11-20 12:10:26,896 INFO L131 PetriNetUnfolder]: For 234/245 co-relation queries the response was YES. [2022-11-20 12:10:26,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2865 conditions, 1946 events. 289/1946 cut-off events. For 234/245 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13888 event pairs, 19 based on Foata normal form. 7/1804 useless extension candidates. Maximal degree in co-relation 2428. Up to 389 conditions per place. [2022-11-20 12:10:26,915 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 42 selfloop transitions, 8 changer transitions 0/193 dead transitions. [2022-11-20 12:10:26,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 193 transitions, 557 flow [2022-11-20 12:10:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:10:26,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:10:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2022-11-20 12:10:26,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8934782608695652 [2022-11-20 12:10:26,920 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2022-11-20 12:10:26,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2022-11-20 12:10:26,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:26,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2022-11-20 12:10:26,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 12:10:26,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:26,927 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:26,928 INFO L175 Difference]: Start difference. First operand has 176 places, 166 transitions, 390 flow. Second operand 5 states and 822 transitions. [2022-11-20 12:10:26,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 193 transitions, 557 flow [2022-11-20 12:10:26,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 193 transitions, 546 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:10:26,935 INFO L231 Difference]: Finished difference. Result has 178 places, 171 transitions, 431 flow [2022-11-20 12:10:26,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=431, PETRI_PLACES=178, PETRI_TRANSITIONS=171} [2022-11-20 12:10:26,937 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 9 predicate places. [2022-11-20 12:10:26,937 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 171 transitions, 431 flow [2022-11-20 12:10:26,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 12:10:26,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:26,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:26,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:10:26,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:26,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash -901114048, now seen corresponding path program 1 times [2022-11-20 12:10:26,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:26,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986840909] [2022-11-20 12:10:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:26,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:27,092 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 12:10:27,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:27,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986840909] [2022-11-20 12:10:27,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986840909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:27,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:27,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:27,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917946304] [2022-11-20 12:10:27,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:27,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:10:27,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:27,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:10:27,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:10:27,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 12:10:27,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 171 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 12:10:27,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:27,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 12:10:27,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:27,432 INFO L130 PetriNetUnfolder]: 64/1064 cut-off events. [2022-11-20 12:10:27,432 INFO L131 PetriNetUnfolder]: For 112/117 co-relation queries the response was YES. [2022-11-20 12:10:27,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 1064 events. 64/1064 cut-off events. For 112/117 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5258 event pairs, 14 based on Foata normal form. 0/994 useless extension candidates. Maximal degree in co-relation 1146. Up to 56 conditions per place. [2022-11-20 12:10:27,446 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 19 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2022-11-20 12:10:27,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 180 transitions, 501 flow [2022-11-20 12:10:27,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:10:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:10:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 836 transitions. [2022-11-20 12:10:27,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.908695652173913 [2022-11-20 12:10:27,451 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 836 transitions. [2022-11-20 12:10:27,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 836 transitions. [2022-11-20 12:10:27,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:27,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 836 transitions. [2022-11-20 12:10:27,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 12:10:27,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:27,458 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:27,459 INFO L175 Difference]: Start difference. First operand has 178 places, 171 transitions, 431 flow. Second operand 5 states and 836 transitions. [2022-11-20 12:10:27,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 180 transitions, 501 flow [2022-11-20 12:10:27,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 180 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:10:27,465 INFO L231 Difference]: Finished difference. Result has 184 places, 174 transitions, 458 flow [2022-11-20 12:10:27,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=458, PETRI_PLACES=184, PETRI_TRANSITIONS=174} [2022-11-20 12:10:27,467 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 15 predicate places. [2022-11-20 12:10:27,467 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 174 transitions, 458 flow [2022-11-20 12:10:27,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 12:10:27,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:27,469 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:27,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:10:27,469 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1217430042, now seen corresponding path program 1 times [2022-11-20 12:10:27,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:27,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868709682] [2022-11-20 12:10:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:27,665 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 12:10:27,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:27,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868709682] [2022-11-20 12:10:27,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868709682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:27,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:27,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861558620] [2022-11-20 12:10:27,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:27,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:27,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:27,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:27,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:27,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 12:10:27,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 174 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states 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 12:10:27,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:27,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 12:10:27,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:27,939 INFO L130 PetriNetUnfolder]: 38/952 cut-off events. [2022-11-20 12:10:27,939 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-20 12:10:27,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 952 events. 38/952 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5094 event pairs, 13 based on Foata normal form. 10/919 useless extension candidates. Maximal degree in co-relation 896. Up to 39 conditions per place. [2022-11-20 12:10:27,948 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 12 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2022-11-20 12:10:27,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 173 transitions, 478 flow [2022-11-20 12:10:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:10:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-11-20 12:10:27,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9130434782608695 [2022-11-20 12:10:27,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-11-20 12:10:27,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-11-20 12:10:27,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:27,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-11-20 12:10:27,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 12:10:27,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 12:10:27,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 12:10:27,959 INFO L175 Difference]: Start difference. First operand has 184 places, 174 transitions, 458 flow. Second operand 3 states and 504 transitions. [2022-11-20 12:10:27,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 173 transitions, 478 flow [2022-11-20 12:10:27,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 173 transitions, 471 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-20 12:10:27,966 INFO L231 Difference]: Finished difference. Result has 184 places, 171 transitions, 440 flow [2022-11-20 12:10:27,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=184, PETRI_TRANSITIONS=171} [2022-11-20 12:10:27,968 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 15 predicate places. [2022-11-20 12:10:27,969 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 171 transitions, 440 flow [2022-11-20 12:10:27,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states 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 12:10:27,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:27,974 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:27,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:10:27,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:27,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:27,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1036157545, now seen corresponding path program 1 times [2022-11-20 12:10:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:27,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832318050] [2022-11-20 12:10:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:27,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:28,282 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 12:10:28,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:28,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832318050] [2022-11-20 12:10:28,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832318050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:28,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:28,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:10:28,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841527044] [2022-11-20 12:10:28,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:28,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:10:28,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:28,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:10:28,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:10:28,287 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 12:10:28,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 171 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 12:10:28,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:28,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 12:10:28,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:28,803 INFO L130 PetriNetUnfolder]: 130/1333 cut-off events. [2022-11-20 12:10:28,803 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-11-20 12:10:28,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 1333 events. 130/1333 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8020 event pairs, 38 based on Foata normal form. 4/1281 useless extension candidates. Maximal degree in co-relation 1189. Up to 123 conditions per place. [2022-11-20 12:10:28,816 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 55 selfloop transitions, 11 changer transitions 0/206 dead transitions. [2022-11-20 12:10:28,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 206 transitions, 667 flow [2022-11-20 12:10:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:10:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:10:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1252 transitions. [2022-11-20 12:10:28,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8505434782608695 [2022-11-20 12:10:28,822 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1252 transitions. [2022-11-20 12:10:28,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1252 transitions. [2022-11-20 12:10:28,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:28,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1252 transitions. [2022-11-20 12:10:28,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.5) internal successors, (1252), 8 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states 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 12:10:28,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states 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 12:10:28,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states 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 12:10:28,833 INFO L175 Difference]: Start difference. First operand has 184 places, 171 transitions, 440 flow. Second operand 8 states and 1252 transitions. [2022-11-20 12:10:28,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 206 transitions, 667 flow [2022-11-20 12:10:28,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 206 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:10:28,873 INFO L231 Difference]: Finished difference. Result has 193 places, 177 transitions, 502 flow [2022-11-20 12:10:28,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=193, PETRI_TRANSITIONS=177} [2022-11-20 12:10:28,874 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 24 predicate places. [2022-11-20 12:10:28,875 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 177 transitions, 502 flow [2022-11-20 12:10:28,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 12:10:28,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:28,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:28,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:10:28,876 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:28,877 INFO L85 PathProgramCache]: Analyzing trace with hash -687664420, now seen corresponding path program 1 times [2022-11-20 12:10:28,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:28,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709475050] [2022-11-20 12:10:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:28,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:28,992 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 12:10:28,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:28,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709475050] [2022-11-20 12:10:28,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709475050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:28,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:28,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027549104] [2022-11-20 12:10:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:28,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:10:28,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:28,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:10:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:10:28,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-20 12:10:28,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 177 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states 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 12:10:28,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:28,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-20 12:10:28,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:29,384 INFO L130 PetriNetUnfolder]: 102/1277 cut-off events. [2022-11-20 12:10:29,384 INFO L131 PetriNetUnfolder]: For 330/332 co-relation queries the response was YES. [2022-11-20 12:10:29,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 1277 events. 102/1277 cut-off events. For 330/332 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7183 event pairs, 24 based on Foata normal form. 22/1260 useless extension candidates. Maximal degree in co-relation 1563. Up to 114 conditions per place. [2022-11-20 12:10:29,397 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 28 selfloop transitions, 8 changer transitions 0/181 dead transitions. [2022-11-20 12:10:29,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 181 transitions, 582 flow [2022-11-20 12:10:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:10:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:10:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 803 transitions. [2022-11-20 12:10:29,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8728260869565218 [2022-11-20 12:10:29,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 803 transitions. [2022-11-20 12:10:29,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 803 transitions. [2022-11-20 12:10:29,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:29,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 803 transitions. [2022-11-20 12:10:29,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 12:10:29,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:29,409 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:29,409 INFO L175 Difference]: Start difference. First operand has 193 places, 177 transitions, 502 flow. Second operand 5 states and 803 transitions. [2022-11-20 12:10:29,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 181 transitions, 582 flow [2022-11-20 12:10:29,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 181 transitions, 576 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:10:29,416 INFO L231 Difference]: Finished difference. Result has 192 places, 174 transitions, 517 flow [2022-11-20 12:10:29,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=517, PETRI_PLACES=192, PETRI_TRANSITIONS=174} [2022-11-20 12:10:29,418 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 23 predicate places. [2022-11-20 12:10:29,418 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 174 transitions, 517 flow [2022-11-20 12:10:29,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states 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 12:10:29,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:29,420 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:29,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:10:29,420 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:29,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 710031927, now seen corresponding path program 1 times [2022-11-20 12:10:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:29,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456377060] [2022-11-20 12:10:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:29,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:29,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:29,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456377060] [2022-11-20 12:10:29,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456377060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:29,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571982297] [2022-11-20 12:10:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:29,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:29,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:29,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:29,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:10:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:29,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:10:29,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:30,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:30,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571982297] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:30,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:10:30,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:10:30,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684117816] [2022-11-20 12:10:30,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:30,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:10:30,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:30,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:10:30,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:10:30,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-20 12:10:30,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 174 transitions, 517 flow. Second operand has 12 states, 12 states have (on average 157.25) internal successors, (1887), 12 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states 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 12:10:30,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:30,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-20 12:10:30,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:31,431 INFO L130 PetriNetUnfolder]: 160/2260 cut-off events. [2022-11-20 12:10:31,432 INFO L131 PetriNetUnfolder]: For 716/716 co-relation queries the response was YES. [2022-11-20 12:10:31,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 2260 events. 160/2260 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 14761 event pairs, 32 based on Foata normal form. 25/2222 useless extension candidates. Maximal degree in co-relation 2895. Up to 107 conditions per place. [2022-11-20 12:10:31,454 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 78 selfloop transitions, 34 changer transitions 0/256 dead transitions. [2022-11-20 12:10:31,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 256 transitions, 1079 flow [2022-11-20 12:10:31,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:10:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 12:10:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3189 transitions. [2022-11-20 12:10:31,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8665760869565218 [2022-11-20 12:10:31,465 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3189 transitions. [2022-11-20 12:10:31,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3189 transitions. [2022-11-20 12:10:31,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:31,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3189 transitions. [2022-11-20 12:10:31,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 159.45) internal successors, (3189), 20 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states 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 12:10:31,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 184.0) internal successors, (3864), 21 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states 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 12:10:31,490 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 184.0) internal successors, (3864), 21 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states 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 12:10:31,490 INFO L175 Difference]: Start difference. First operand has 192 places, 174 transitions, 517 flow. Second operand 20 states and 3189 transitions. [2022-11-20 12:10:31,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 256 transitions, 1079 flow [2022-11-20 12:10:31,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 256 transitions, 1057 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-20 12:10:31,500 INFO L231 Difference]: Finished difference. Result has 216 places, 201 transitions, 780 flow [2022-11-20 12:10:31,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=780, PETRI_PLACES=216, PETRI_TRANSITIONS=201} [2022-11-20 12:10:31,502 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 47 predicate places. [2022-11-20 12:10:31,502 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 201 transitions, 780 flow [2022-11-20 12:10:31,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 157.25) internal successors, (1887), 12 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states 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 12:10:31,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:31,504 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:31,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:31,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:10:31,712 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash 536153767, now seen corresponding path program 1 times [2022-11-20 12:10:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:31,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503565480] [2022-11-20 12:10:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:31,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:31,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:31,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503565480] [2022-11-20 12:10:31,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503565480] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:31,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119341740] [2022-11-20 12:10:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:31,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:31,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:31,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:31,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:10:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:32,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:10:32,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:32,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:32,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119341740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:32,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:10:32,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:10:32,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25210975] [2022-11-20 12:10:32,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:32,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:10:32,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:10:32,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:10:32,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-20 12:10:32,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 201 transitions, 780 flow. Second operand has 6 states, 6 states have (on average 156.66666666666666) internal successors, (940), 6 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 12:10:32,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:32,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-20 12:10:32,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:33,314 INFO L130 PetriNetUnfolder]: 154/2404 cut-off events. [2022-11-20 12:10:33,314 INFO L131 PetriNetUnfolder]: For 1498/1498 co-relation queries the response was YES. [2022-11-20 12:10:33,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 2404 events. 154/2404 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 15247 event pairs, 31 based on Foata normal form. 36/2370 useless extension candidates. Maximal degree in co-relation 3524. Up to 231 conditions per place. [2022-11-20 12:10:33,335 INFO L137 encePairwiseOnDemand]: 174/184 looper letters, 68 selfloop transitions, 20 changer transitions 0/232 dead transitions. [2022-11-20 12:10:33,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 232 transitions, 1142 flow [2022-11-20 12:10:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:10:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:10:33,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1280 transitions. [2022-11-20 12:10:33,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2022-11-20 12:10:33,340 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1280 transitions. [2022-11-20 12:10:33,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1280 transitions. [2022-11-20 12:10:33,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:33,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1280 transitions. [2022-11-20 12:10:33,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states 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 12:10:33,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states 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 12:10:33,351 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states 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 12:10:33,352 INFO L175 Difference]: Start difference. First operand has 216 places, 201 transitions, 780 flow. Second operand 8 states and 1280 transitions. [2022-11-20 12:10:33,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 232 transitions, 1142 flow [2022-11-20 12:10:33,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 232 transitions, 1050 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 12:10:33,367 INFO L231 Difference]: Finished difference. Result has 221 places, 212 transitions, 911 flow [2022-11-20 12:10:33,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=221, PETRI_TRANSITIONS=212} [2022-11-20 12:10:33,369 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 52 predicate places. [2022-11-20 12:10:33,370 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 212 transitions, 911 flow [2022-11-20 12:10:33,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.66666666666666) internal successors, (940), 6 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 12:10:33,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:33,371 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:33,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:33,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:10:33,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:33,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:33,579 INFO L85 PathProgramCache]: Analyzing trace with hash 245223797, now seen corresponding path program 1 times [2022-11-20 12:10:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:33,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565476471] [2022-11-20 12:10:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:33,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:33,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:33,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565476471] [2022-11-20 12:10:33,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565476471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:33,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:33,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:33,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358614254] [2022-11-20 12:10:33,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:33,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:10:33,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:33,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:10:33,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:10:33,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 12:10:33,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 212 transitions, 911 flow. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states 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 12:10:33,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:33,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 12:10:33,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:34,381 INFO L130 PetriNetUnfolder]: 91/2069 cut-off events. [2022-11-20 12:10:34,381 INFO L131 PetriNetUnfolder]: For 983/983 co-relation queries the response was YES. [2022-11-20 12:10:34,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 2069 events. 91/2069 cut-off events. For 983/983 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11438 event pairs, 11 based on Foata normal form. 19/2025 useless extension candidates. Maximal degree in co-relation 2863. Up to 107 conditions per place. [2022-11-20 12:10:34,404 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 12 selfloop transitions, 8 changer transitions 0/215 dead transitions. [2022-11-20 12:10:34,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 215 transitions, 961 flow [2022-11-20 12:10:34,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:10:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:10:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2022-11-20 12:10:34,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-20 12:10:34,408 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2022-11-20 12:10:34,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2022-11-20 12:10:34,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:34,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2022-11-20 12:10:34,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 12:10:34,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:34,437 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 12:10:34,438 INFO L175 Difference]: Start difference. First operand has 221 places, 212 transitions, 911 flow. Second operand 5 states and 828 transitions. [2022-11-20 12:10:34,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 215 transitions, 961 flow [2022-11-20 12:10:34,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 215 transitions, 941 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-20 12:10:34,452 INFO L231 Difference]: Finished difference. Result has 222 places, 212 transitions, 911 flow [2022-11-20 12:10:34,453 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=911, PETRI_PLACES=222, PETRI_TRANSITIONS=212} [2022-11-20 12:10:34,456 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 53 predicate places. [2022-11-20 12:10:34,457 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 212 transitions, 911 flow [2022-11-20 12:10:34,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states 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 12:10:34,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:34,458 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:34,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:10:34,458 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash -987996382, now seen corresponding path program 1 times [2022-11-20 12:10:34,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:34,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353599926] [2022-11-20 12:10:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:34,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:34,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:34,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353599926] [2022-11-20 12:10:34,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353599926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:34,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712636194] [2022-11-20 12:10:34,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:34,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:34,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:34,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:34,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:10:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:34,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:10:34,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:35,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:35,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712636194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:35,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:10:35,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 12:10:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580970252] [2022-11-20 12:10:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:35,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:10:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:10:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:10:35,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 12:10:35,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 212 transitions, 911 flow. Second operand has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states 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 12:10:35,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:35,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 12:10:35,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:35,666 INFO L130 PetriNetUnfolder]: 88/2075 cut-off events. [2022-11-20 12:10:35,666 INFO L131 PetriNetUnfolder]: For 961/961 co-relation queries the response was YES. [2022-11-20 12:10:35,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 2075 events. 88/2075 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11369 event pairs, 17 based on Foata normal form. 19/2031 useless extension candidates. Maximal degree in co-relation 2961. Up to 112 conditions per place. [2022-11-20 12:10:35,702 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 13 selfloop transitions, 5 changer transitions 3/213 dead transitions. [2022-11-20 12:10:35,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 213 transitions, 951 flow [2022-11-20 12:10:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:10:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:10:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 663 transitions. [2022-11-20 12:10:35,706 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9008152173913043 [2022-11-20 12:10:35,706 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 663 transitions. [2022-11-20 12:10:35,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 663 transitions. [2022-11-20 12:10:35,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:35,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 663 transitions. [2022-11-20 12:10:35,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 12:10:35,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 12:10:35,712 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 12:10:35,712 INFO L175 Difference]: Start difference. First operand has 222 places, 212 transitions, 911 flow. Second operand 4 states and 663 transitions. [2022-11-20 12:10:35,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 213 transitions, 951 flow [2022-11-20 12:10:35,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 213 transitions, 939 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:10:35,727 INFO L231 Difference]: Finished difference. Result has 221 places, 208 transitions, 899 flow [2022-11-20 12:10:35,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=899, PETRI_PLACES=221, PETRI_TRANSITIONS=208} [2022-11-20 12:10:35,730 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 52 predicate places. [2022-11-20 12:10:35,730 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 208 transitions, 899 flow [2022-11-20 12:10:35,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states 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 12:10:35,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:35,731 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:35,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:35,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:10:35,938 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:35,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:35,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1746979404, now seen corresponding path program 1 times [2022-11-20 12:10:35,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:35,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769545454] [2022-11-20 12:10:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:35,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:36,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:36,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769545454] [2022-11-20 12:10:36,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769545454] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:36,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952458319] [2022-11-20 12:10:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:36,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:36,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:36,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:36,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:10:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:36,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:10:36,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:36,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:37,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952458319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:37,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:10:37,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 12:10:37,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763382468] [2022-11-20 12:10:37,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:37,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:10:37,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:37,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:10:37,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:10:37,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 12:10:37,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 208 transitions, 899 flow. Second operand has 16 states, 16 states have (on average 151.625) internal successors, (2426), 16 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states 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 12:10:37,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:37,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 12:10:37,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:38,513 INFO L130 PetriNetUnfolder]: 219/2729 cut-off events. [2022-11-20 12:10:38,513 INFO L131 PetriNetUnfolder]: For 1905/1905 co-relation queries the response was YES. [2022-11-20 12:10:38,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4786 conditions, 2729 events. 219/2729 cut-off events. For 1905/1905 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 19059 event pairs, 55 based on Foata normal form. 37/2695 useless extension candidates. Maximal degree in co-relation 4306. Up to 126 conditions per place. [2022-11-20 12:10:38,543 INFO L137 encePairwiseOnDemand]: 171/184 looper letters, 90 selfloop transitions, 62 changer transitions 1/287 dead transitions. [2022-11-20 12:10:38,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 287 transitions, 1522 flow [2022-11-20 12:10:38,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:10:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 12:10:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3674 transitions. [2022-11-20 12:10:38,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8319746376811594 [2022-11-20 12:10:38,557 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3674 transitions. [2022-11-20 12:10:38,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3674 transitions. [2022-11-20 12:10:38,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:38,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3674 transitions. [2022-11-20 12:10:38,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 153.08333333333334) internal successors, (3674), 24 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states 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 12:10:38,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 184.0) internal successors, (4600), 25 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states 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 12:10:38,587 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 184.0) internal successors, (4600), 25 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states 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 12:10:38,587 INFO L175 Difference]: Start difference. First operand has 221 places, 208 transitions, 899 flow. Second operand 24 states and 3674 transitions. [2022-11-20 12:10:38,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 287 transitions, 1522 flow [2022-11-20 12:10:38,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 287 transitions, 1512 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:10:38,606 INFO L231 Difference]: Finished difference. Result has 241 places, 223 transitions, 1148 flow [2022-11-20 12:10:38,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1148, PETRI_PLACES=241, PETRI_TRANSITIONS=223} [2022-11-20 12:10:38,607 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 72 predicate places. [2022-11-20 12:10:38,608 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 223 transitions, 1148 flow [2022-11-20 12:10:38,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 151.625) internal successors, (2426), 16 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states 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 12:10:38,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:38,609 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:38,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:38,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:10:38,817 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:38,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1962636643, now seen corresponding path program 1 times [2022-11-20 12:10:38,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:38,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970647017] [2022-11-20 12:10:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:38,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:39,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:39,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970647017] [2022-11-20 12:10:39,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970647017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:39,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:39,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:10:39,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297714169] [2022-11-20 12:10:39,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:39,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:10:39,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:39,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:10:39,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:10:39,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 12:10:39,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 223 transitions, 1148 flow. Second operand has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 12:10:39,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:39,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 12:10:39,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:40,056 INFO L130 PetriNetUnfolder]: 216/2847 cut-off events. [2022-11-20 12:10:40,056 INFO L131 PetriNetUnfolder]: For 2468/2468 co-relation queries the response was YES. [2022-11-20 12:10:40,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5127 conditions, 2847 events. 216/2847 cut-off events. For 2468/2468 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 20320 event pairs, 45 based on Foata normal form. 24/2800 useless extension candidates. Maximal degree in co-relation 4665. Up to 297 conditions per place. [2022-11-20 12:10:40,091 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 49 selfloop transitions, 45 changer transitions 2/230 dead transitions. [2022-11-20 12:10:40,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 230 transitions, 1334 flow [2022-11-20 12:10:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:10:40,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:10:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1227 transitions. [2022-11-20 12:10:40,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8335597826086957 [2022-11-20 12:10:40,095 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1227 transitions. [2022-11-20 12:10:40,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1227 transitions. [2022-11-20 12:10:40,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:40,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1227 transitions. [2022-11-20 12:10:40,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.375) internal successors, (1227), 8 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states 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 12:10:40,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states 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 12:10:40,182 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states 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 12:10:40,182 INFO L175 Difference]: Start difference. First operand has 241 places, 223 transitions, 1148 flow. Second operand 8 states and 1227 transitions. [2022-11-20 12:10:40,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 230 transitions, 1334 flow [2022-11-20 12:10:40,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 230 transitions, 1281 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-20 12:10:40,202 INFO L231 Difference]: Finished difference. Result has 237 places, 216 transitions, 1165 flow [2022-11-20 12:10:40,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1165, PETRI_PLACES=237, PETRI_TRANSITIONS=216} [2022-11-20 12:10:40,205 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 68 predicate places. [2022-11-20 12:10:40,206 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 216 transitions, 1165 flow [2022-11-20 12:10:40,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 12:10:40,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:40,207 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:40,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:10:40,207 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash 399186211, now seen corresponding path program 1 times [2022-11-20 12:10:40,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:40,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638217705] [2022-11-20 12:10:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:40,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:10:40,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:40,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638217705] [2022-11-20 12:10:40,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638217705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:40,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315173421] [2022-11-20 12:10:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:40,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:40,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:40,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:40,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:10:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:41,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:10:41,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 12:10:41,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 12:10:42,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315173421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:42,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:10:42,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-20 12:10:42,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638795261] [2022-11-20 12:10:42,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:42,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:10:42,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:42,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:10:42,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:10:42,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 12:10:42,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 216 transitions, 1165 flow. Second operand has 18 states, 18 states have (on average 152.22222222222223) internal successors, (2740), 18 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states 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 12:10:42,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:42,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 12:10:42,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:44,603 INFO L130 PetriNetUnfolder]: 342/4677 cut-off events. [2022-11-20 12:10:44,604 INFO L131 PetriNetUnfolder]: For 4989/4989 co-relation queries the response was YES. [2022-11-20 12:10:44,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8607 conditions, 4677 events. 342/4677 cut-off events. For 4989/4989 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 36407 event pairs, 82 based on Foata normal form. 24/4580 useless extension candidates. Maximal degree in co-relation 8128. Up to 202 conditions per place. [2022-11-20 12:10:44,662 INFO L137 encePairwiseOnDemand]: 172/184 looper letters, 139 selfloop transitions, 91 changer transitions 5/369 dead transitions. [2022-11-20 12:10:44,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 369 transitions, 2643 flow [2022-11-20 12:10:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 12:10:44,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 12:10:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4303 transitions. [2022-11-20 12:10:44,671 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8352096273291926 [2022-11-20 12:10:44,671 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4303 transitions. [2022-11-20 12:10:44,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4303 transitions. [2022-11-20 12:10:44,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:44,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4303 transitions. [2022-11-20 12:10:44,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 153.67857142857142) internal successors, (4303), 28 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states 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 12:10:44,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 184.0) internal successors, (5336), 29 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states 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 12:10:44,798 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 184.0) internal successors, (5336), 29 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states 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 12:10:44,800 INFO L175 Difference]: Start difference. First operand has 237 places, 216 transitions, 1165 flow. Second operand 28 states and 4303 transitions. [2022-11-20 12:10:44,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 369 transitions, 2643 flow [2022-11-20 12:10:44,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 369 transitions, 2547 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-20 12:10:44,841 INFO L231 Difference]: Finished difference. Result has 270 places, 267 transitions, 1995 flow [2022-11-20 12:10:44,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1995, PETRI_PLACES=270, PETRI_TRANSITIONS=267} [2022-11-20 12:10:44,842 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 101 predicate places. [2022-11-20 12:10:44,843 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 267 transitions, 1995 flow [2022-11-20 12:10:44,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 152.22222222222223) internal successors, (2740), 18 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states 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 12:10:44,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:44,845 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:44,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:45,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:45,052 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:45,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1633801715, now seen corresponding path program 1 times [2022-11-20 12:10:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:45,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968456468] [2022-11-20 12:10:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:45,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 12:10:45,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:45,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968456468] [2022-11-20 12:10:45,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968456468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:45,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138737473] [2022-11-20 12:10:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:45,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:45,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:45,970 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:45,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:10:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:46,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:10:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 12:10:46,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 12:10:47,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138737473] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:47,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:10:47,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-20 12:10:47,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733892571] [2022-11-20 12:10:47,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:47,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:10:47,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:47,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:10:47,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:10:47,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 12:10:47,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 267 transitions, 1995 flow. Second operand has 22 states, 22 states have (on average 152.63636363636363) internal successors, (3358), 22 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states 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 12:10:47,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:47,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 12:10:47,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:51,386 INFO L130 PetriNetUnfolder]: 479/6351 cut-off events. [2022-11-20 12:10:51,386 INFO L131 PetriNetUnfolder]: For 10534/10534 co-relation queries the response was YES. [2022-11-20 12:10:51,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12271 conditions, 6351 events. 479/6351 cut-off events. For 10534/10534 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 52101 event pairs, 128 based on Foata normal form. 29/6207 useless extension candidates. Maximal degree in co-relation 11563. Up to 316 conditions per place. [2022-11-20 12:10:51,467 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 159 selfloop transitions, 178 changer transitions 2/473 dead transitions. [2022-11-20 12:10:51,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 473 transitions, 4288 flow [2022-11-20 12:10:51,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 12:10:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 12:10:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5366 transitions. [2022-11-20 12:10:51,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8332298136645963 [2022-11-20 12:10:51,481 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5366 transitions. [2022-11-20 12:10:51,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5366 transitions. [2022-11-20 12:10:51,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:51,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5366 transitions. [2022-11-20 12:10:51,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 153.31428571428572) internal successors, (5366), 35 states have internal predecessors, (5366), 0 states have call successors, (0), 0 states 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 12:10:51,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 184.0) internal successors, (6624), 36 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states 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 12:10:51,517 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 184.0) internal successors, (6624), 36 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states 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 12:10:51,518 INFO L175 Difference]: Start difference. First operand has 270 places, 267 transitions, 1995 flow. Second operand 35 states and 5366 transitions. [2022-11-20 12:10:51,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 473 transitions, 4288 flow [2022-11-20 12:10:51,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 473 transitions, 4183 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-20 12:10:51,602 INFO L231 Difference]: Finished difference. Result has 307 places, 349 transitions, 3447 flow [2022-11-20 12:10:51,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3447, PETRI_PLACES=307, PETRI_TRANSITIONS=349} [2022-11-20 12:10:51,604 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 138 predicate places. [2022-11-20 12:10:51,604 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 349 transitions, 3447 flow [2022-11-20 12:10:51,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 152.63636363636363) internal successors, (3358), 22 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states 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 12:10:51,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:51,606 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:51,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:51,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:10:51,816 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:10:51,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:51,817 INFO L85 PathProgramCache]: Analyzing trace with hash -534078514, now seen corresponding path program 2 times [2022-11-20 12:10:51,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:51,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484390820] [2022-11-20 12:10:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:51,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:52,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:52,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484390820] [2022-11-20 12:10:52,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484390820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:52,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074848293] [2022-11-20 12:10:52,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:10:52,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:52,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:52,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:52,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:10:53,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:10:53,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:10:53,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:10:53,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:53,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:54,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074848293] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:54,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:10:54,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 12:10:54,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355551617] [2022-11-20 12:10:54,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:54,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:10:54,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:54,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:10:54,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:10:54,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-20 12:10:54,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 349 transitions, 3447 flow. Second operand has 32 states, 32 states have (on average 157.71875) internal successors, (5047), 32 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states 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 12:10:54,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:54,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-20 12:10:54,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:00,463 INFO L130 PetriNetUnfolder]: 564/9353 cut-off events. [2022-11-20 12:11:00,463 INFO L131 PetriNetUnfolder]: For 19347/19347 co-relation queries the response was YES. [2022-11-20 12:11:00,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18474 conditions, 9353 events. 564/9353 cut-off events. For 19347/19347 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 69481 event pairs, 180 based on Foata normal form. 55/9141 useless extension candidates. Maximal degree in co-relation 16781. Up to 622 conditions per place. [2022-11-20 12:11:00,589 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 295 selfloop transitions, 151 changer transitions 1/594 dead transitions. [2022-11-20 12:11:00,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 594 transitions, 6287 flow [2022-11-20 12:11:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 12:11:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-20 12:11:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 7505 transitions. [2022-11-20 12:11:00,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8678307123034228 [2022-11-20 12:11:00,601 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 7505 transitions. [2022-11-20 12:11:00,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 7505 transitions. [2022-11-20 12:11:00,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:00,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 7505 transitions. [2022-11-20 12:11:00,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 159.68085106382978) internal successors, (7505), 47 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:00,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 184.0) internal successors, (8832), 48 states have internal predecessors, (8832), 0 states have call successors, (0), 0 states 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 12:11:00,639 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 184.0) internal successors, (8832), 48 states have internal predecessors, (8832), 0 states have call successors, (0), 0 states 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 12:11:00,639 INFO L175 Difference]: Start difference. First operand has 307 places, 349 transitions, 3447 flow. Second operand 47 states and 7505 transitions. [2022-11-20 12:11:00,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 594 transitions, 6287 flow [2022-11-20 12:11:00,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 594 transitions, 6099 flow, removed 53 selfloop flow, removed 13 redundant places. [2022-11-20 12:11:00,792 INFO L231 Difference]: Finished difference. Result has 349 places, 414 transitions, 4748 flow [2022-11-20 12:11:00,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=3276, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=4748, PETRI_PLACES=349, PETRI_TRANSITIONS=414} [2022-11-20 12:11:00,793 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 180 predicate places. [2022-11-20 12:11:00,793 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 414 transitions, 4748 flow [2022-11-20 12:11:00,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 157.71875) internal successors, (5047), 32 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states 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 12:11:00,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:00,796 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:00,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:01,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:11:01,014 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:11:01,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:01,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2137506421, now seen corresponding path program 2 times [2022-11-20 12:11:01,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:01,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600461511] [2022-11-20 12:11:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:01,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1167 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:11:02,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:02,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600461511] [2022-11-20 12:11:02,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600461511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:11:02,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338964320] [2022-11-20 12:11:02,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:11:02,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:02,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:02,590 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:11:02,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:11:02,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:11:02,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:02,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:11:03,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1135 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 12:11:03,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1135 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 12:11:05,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338964320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:05,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:11:05,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 33 [2022-11-20 12:11:05,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439111054] [2022-11-20 12:11:05,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:05,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 12:11:05,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:05,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 12:11:05,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:11:05,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 12:11:05,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 414 transitions, 4748 flow. Second operand has 34 states, 34 states have (on average 152.11764705882354) internal successors, (5172), 34 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states 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 12:11:05,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:05,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 12:11:05,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:12,285 INFO L130 PetriNetUnfolder]: 918/12257 cut-off events. [2022-11-20 12:11:12,285 INFO L131 PetriNetUnfolder]: For 28502/28502 co-relation queries the response was YES. [2022-11-20 12:11:12,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25003 conditions, 12257 events. 918/12257 cut-off events. For 28502/28502 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 105265 event pairs, 301 based on Foata normal form. 24/11968 useless extension candidates. Maximal degree in co-relation 24099. Up to 600 conditions per place. [2022-11-20 12:11:12,469 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 322 selfloop transitions, 289 changer transitions 9/754 dead transitions. [2022-11-20 12:11:12,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 754 transitions, 8703 flow [2022-11-20 12:11:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-20 12:11:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-20 12:11:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 8613 transitions. [2022-11-20 12:11:12,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8358889751552795 [2022-11-20 12:11:12,489 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 8613 transitions. [2022-11-20 12:11:12,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 8613 transitions. [2022-11-20 12:11:12,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:12,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 8613 transitions. [2022-11-20 12:11:12,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 153.80357142857142) internal successors, (8613), 56 states have internal predecessors, (8613), 0 states have call successors, (0), 0 states 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 12:11:12,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 184.0) internal successors, (10488), 57 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states 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 12:11:12,543 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 184.0) internal successors, (10488), 57 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states 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 12:11:12,543 INFO L175 Difference]: Start difference. First operand has 349 places, 414 transitions, 4748 flow. Second operand 56 states and 8613 transitions. [2022-11-20 12:11:12,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 754 transitions, 8703 flow [2022-11-20 12:11:12,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 754 transitions, 8570 flow, removed 16 selfloop flow, removed 12 redundant places. [2022-11-20 12:11:12,768 INFO L231 Difference]: Finished difference. Result has 408 places, 505 transitions, 6957 flow [2022-11-20 12:11:12,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=6957, PETRI_PLACES=408, PETRI_TRANSITIONS=505} [2022-11-20 12:11:12,770 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 239 predicate places. [2022-11-20 12:11:12,770 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 505 transitions, 6957 flow [2022-11-20 12:11:12,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 152.11764705882354) internal successors, (5172), 34 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states 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 12:11:12,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:12,773 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:12,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:12,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:12,990 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:11:12,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:12,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1952320112, now seen corresponding path program 2 times [2022-11-20 12:11:12,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:12,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20744935] [2022-11-20 12:11:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:12,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 12:11:14,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:14,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20744935] [2022-11-20 12:11:14,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20744935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:11:14,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630462416] [2022-11-20 12:11:14,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:11:14,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:14,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:14,495 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:11:14,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:11:14,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:11:14,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:14,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:11:14,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 12:11:15,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 12:11:17,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630462416] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:17,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:11:17,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 12:11:17,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422271580] [2022-11-20 12:11:17,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:17,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:11:17,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:17,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:11:17,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:11:17,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 12:11:17,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 505 transitions, 6957 flow. Second operand has 32 states, 32 states have (on average 152.4375) internal successors, (4878), 32 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states 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 12:11:17,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:17,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 12:11:17,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:29,549 INFO L130 PetriNetUnfolder]: 1582/20010 cut-off events. [2022-11-20 12:11:29,549 INFO L131 PetriNetUnfolder]: For 59777/59777 co-relation queries the response was YES. [2022-11-20 12:11:29,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43108 conditions, 20010 events. 1582/20010 cut-off events. For 59777/59777 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 193681 event pairs, 493 based on Foata normal form. 27/19550 useless extension candidates. Maximal degree in co-relation 42135. Up to 1103 conditions per place. [2022-11-20 12:11:29,858 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 355 selfloop transitions, 592 changer transitions 7/1088 dead transitions. [2022-11-20 12:11:29,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1088 transitions, 16485 flow [2022-11-20 12:11:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 12:11:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-20 12:11:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 7840 transitions. [2022-11-20 12:11:29,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.835464620630861 [2022-11-20 12:11:29,872 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 7840 transitions. [2022-11-20 12:11:29,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 7840 transitions. [2022-11-20 12:11:29,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:29,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 7840 transitions. [2022-11-20 12:11:29,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 153.72549019607843) internal successors, (7840), 51 states have internal predecessors, (7840), 0 states have call successors, (0), 0 states 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 12:11:29,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 184.0) internal successors, (9568), 52 states have internal predecessors, (9568), 0 states have call successors, (0), 0 states 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 12:11:29,913 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 184.0) internal successors, (9568), 52 states have internal predecessors, (9568), 0 states have call successors, (0), 0 states 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 12:11:29,913 INFO L175 Difference]: Start difference. First operand has 408 places, 505 transitions, 6957 flow. Second operand 51 states and 7840 transitions. [2022-11-20 12:11:29,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1088 transitions, 16485 flow [2022-11-20 12:11:30,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1088 transitions, 16289 flow, removed 50 selfloop flow, removed 15 redundant places. [2022-11-20 12:11:30,459 INFO L231 Difference]: Finished difference. Result has 458 places, 844 transitions, 14487 flow [2022-11-20 12:11:30,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=6798, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=14487, PETRI_PLACES=458, PETRI_TRANSITIONS=844} [2022-11-20 12:11:30,461 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 289 predicate places. [2022-11-20 12:11:30,461 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 844 transitions, 14487 flow [2022-11-20 12:11:30,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 152.4375) internal successors, (4878), 32 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states 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 12:11:30,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:30,464 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:30,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:30,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:30,673 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:11:30,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:30,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1831857863, now seen corresponding path program 3 times [2022-11-20 12:11:30,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:30,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270962159] [2022-11-20 12:11:30,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:30,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 12:11:32,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:32,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270962159] [2022-11-20 12:11:32,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270962159] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:11:32,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791610059] [2022-11-20 12:11:32,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:11:32,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:32,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:32,925 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:11:32,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:11:34,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 12:11:34,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:34,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 12:11:34,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 12:11:35,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 12:11:37,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791610059] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:37,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:11:37,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2022-11-20 12:11:37,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574181586] [2022-11-20 12:11:37,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:37,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 12:11:37,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:37,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 12:11:37,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 12:11:37,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 12:11:37,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 844 transitions, 14487 flow. Second operand has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states 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 12:11:37,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:37,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 12:11:37,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:12:02,159 INFO L130 PetriNetUnfolder]: 2611/32231 cut-off events. [2022-11-20 12:12:02,159 INFO L131 PetriNetUnfolder]: For 129517/129517 co-relation queries the response was YES. [2022-11-20 12:12:02,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73065 conditions, 32231 events. 2611/32231 cut-off events. For 129517/129517 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 349315 event pairs, 867 based on Foata normal form. 109/31565 useless extension candidates. Maximal degree in co-relation 71179. Up to 1909 conditions per place. [2022-11-20 12:12:02,803 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 479 selfloop transitions, 1126 changer transitions 12/1751 dead transitions. [2022-11-20 12:12:02,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1751 transitions, 31287 flow [2022-11-20 12:12:02,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-20 12:12:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-11-20 12:12:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 11377 transitions. [2022-11-20 12:12:02,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8355611045828437 [2022-11-20 12:12:02,819 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 11377 transitions. [2022-11-20 12:12:02,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 11377 transitions. [2022-11-20 12:12:02,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:12:02,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 11377 transitions. [2022-11-20 12:12:02,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 153.74324324324326) internal successors, (11377), 74 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states 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 12:12:02,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 184.0) internal successors, (13800), 75 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states 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 12:12:02,861 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 184.0) internal successors, (13800), 75 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states 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 12:12:02,862 INFO L175 Difference]: Start difference. First operand has 458 places, 844 transitions, 14487 flow. Second operand 74 states and 11377 transitions. [2022-11-20 12:12:02,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1751 transitions, 31287 flow [2022-11-20 12:12:03,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 1751 transitions, 30167 flow, removed 477 selfloop flow, removed 15 redundant places. [2022-11-20 12:12:03,914 INFO L231 Difference]: Finished difference. Result has 536 places, 1389 transitions, 27246 flow [2022-11-20 12:12:03,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=13494, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=644, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=27246, PETRI_PLACES=536, PETRI_TRANSITIONS=1389} [2022-11-20 12:12:03,916 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 367 predicate places. [2022-11-20 12:12:03,916 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 1389 transitions, 27246 flow [2022-11-20 12:12:03,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states 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 12:12:03,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:12:03,918 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:03,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 12:12:04,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:04,128 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:12:04,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash -735898625, now seen corresponding path program 4 times [2022-11-20 12:12:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:04,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56784339] [2022-11-20 12:12:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:04,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 12:12:06,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:06,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56784339] [2022-11-20 12:12:06,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56784339] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:06,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423032286] [2022-11-20 12:12:06,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:12:06,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:06,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:06,520 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:12:06,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc7d746-2c5d-4939-a834-c78e0d08e4db/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:12:08,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:12:08,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:08,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 12:12:08,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 12:12:09,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 12:12:10,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423032286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:10,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:12:10,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2022-11-20 12:12:10,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254778345] [2022-11-20 12:12:10,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:10,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 12:12:10,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:10,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 12:12:10,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 12:12:10,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 12:12:10,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 1389 transitions, 27246 flow. Second operand has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states 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 12:12:10,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:12:10,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 12:12:10,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand