./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:48:50,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:48:50,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:48:50,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:48:50,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:48:50,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:48:50,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:48:50,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:48:50,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:48:50,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:48:50,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:48:50,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:48:50,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:48:50,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:48:50,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:48:50,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:48:50,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:48:50,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:48:50,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:48:50,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:48:50,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:48:50,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:48:50,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:48:50,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:48:50,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:48:50,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:48:50,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:48:50,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:48:50,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:48:50,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:48:50,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:48:50,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:48:50,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:48:50,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:48:50,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:48:50,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:48:50,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:48:50,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:48:50,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:48:50,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:48:50,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:48:50,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:48:50,791 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:48:50,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:48:50,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:48:50,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:48:50,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:48:50,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:48:50,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:48:50,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:48:50,799 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:48:50,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:48:50,801 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:48:50,801 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:48:50,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:48:50,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:48:50,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:48:50,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:48:50,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:48:50,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:48:50,803 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:48:50,803 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:48:50,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:48:50,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:48:50,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:48:50,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:48:50,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:48:50,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:48:50,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:48:50,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:48:50,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:48:50,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:48:50,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:48:50,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:48:50,806 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:48:50,807 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:48:50,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:48:50,807 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_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 [2022-11-18 19:48:51,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:48:51,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:48:51,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:48:51,134 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:48:51,135 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:48:51,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-18 19:48:51,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/data/d1bff9f6b/d89963ccc7cb44bda2302cdbbfd89f1f/FLAGc44eaa392 [2022-11-18 19:48:51,817 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:48:51,820 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-18 19:48:51,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/data/d1bff9f6b/d89963ccc7cb44bda2302cdbbfd89f1f/FLAGc44eaa392 [2022-11-18 19:48:52,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/data/d1bff9f6b/d89963ccc7cb44bda2302cdbbfd89f1f [2022-11-18 19:48:52,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:48:52,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:48:52,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:48:52,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:48:52,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:48:52,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3bbe2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52, skipping insertion in model container [2022-11-18 19:48:52,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:48:52,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:48:52,468 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-18 19:48:52,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:48:52,484 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:48:52,515 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-18 19:48:52,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:48:52,536 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:48:52,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52 WrapperNode [2022-11-18 19:48:52,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:48:52,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:48:52,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:48:52,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:48:52,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,588 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 206 [2022-11-18 19:48:52,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:48:52,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:48:52,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:48:52,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:48:52,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:48:52,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:48:52,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:48:52,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:48:52,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:48:52,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:52,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:48:52,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:48:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:48:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:48:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:48:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:48:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:48:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:48:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:48:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:48:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:48:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:48:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:48:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:48:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:48:52,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:48:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:48:52,721 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:48:52,844 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:48:52,846 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:48:53,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:48:53,584 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:48:53,590 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-18 19:48:53,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:48:53 BoogieIcfgContainer [2022-11-18 19:48:53,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:48:53,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:48:53,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:48:53,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:48:53,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:48:52" (1/3) ... [2022-11-18 19:48:53,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac212fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:48:53, skipping insertion in model container [2022-11-18 19:48:53,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (2/3) ... [2022-11-18 19:48:53,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac212fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:48:53, skipping insertion in model container [2022-11-18 19:48:53,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:48:53" (3/3) ... [2022-11-18 19:48:53,610 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2022-11-18 19:48:53,623 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:48:53,636 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:48:53,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-18 19:48:53,637 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:48:53,851 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:48:53,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 335 transitions, 686 flow [2022-11-18 19:48:54,170 INFO L130 PetriNetUnfolder]: 27/333 cut-off events. [2022-11-18 19:48:54,174 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:48:54,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 333 events. 27/333 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 455 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2022-11-18 19:48:54,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 335 transitions, 686 flow [2022-11-18 19:48:54,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 309 transitions, 630 flow [2022-11-18 19:48:54,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:48:54,227 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;@28fd0b8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:48:54,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-18 19:48:54,243 INFO L130 PetriNetUnfolder]: 2/48 cut-off events. [2022-11-18 19:48:54,244 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:48:54,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:54,245 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] [2022-11-18 19:48:54,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:48:54,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:54,253 INFO L85 PathProgramCache]: Analyzing trace with hash 772161780, now seen corresponding path program 1 times [2022-11-18 19:48:54,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:54,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118889299] [2022-11-18 19:48:54,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:54,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:54,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:48:54,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468240822] [2022-11-18 19:48:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:54,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:54,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:54,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:54,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:48:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:54,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:48:54,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:54,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:54,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:54,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118889299] [2022-11-18 19:48:54,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:48:54,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468240822] [2022-11-18 19:48:54,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468240822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:54,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:54,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:48:54,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675707685] [2022-11-18 19:48:54,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:54,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:48:54,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:48:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:48:54,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 335 [2022-11-18 19:48:54,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 309 transitions, 630 flow. Second operand has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:54,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:54,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 335 [2022-11-18 19:48:54,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:55,860 INFO L130 PetriNetUnfolder]: 26/606 cut-off events. [2022-11-18 19:48:55,861 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-18 19:48:55,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 606 events. 26/606 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2207 event pairs, 4 based on Foata normal form. 38/537 useless extension candidates. Maximal degree in co-relation 525. Up to 67 conditions per place. [2022-11-18 19:48:55,872 INFO L137 encePairwiseOnDemand]: 302/335 looper letters, 104 selfloop transitions, 15 changer transitions 20/349 dead transitions. [2022-11-18 19:48:55,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 349 transitions, 1000 flow [2022-11-18 19:48:55,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:48:55,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:48:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3152 transitions. [2022-11-18 19:48:55,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7237657864523536 [2022-11-18 19:48:55,902 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3152 transitions. [2022-11-18 19:48:55,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3152 transitions. [2022-11-18 19:48:55,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:55,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3152 transitions. [2022-11-18 19:48:55,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 242.46153846153845) internal successors, (3152), 13 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:55,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:55,945 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:55,947 INFO L175 Difference]: Start difference. First operand has 290 places, 309 transitions, 630 flow. Second operand 13 states and 3152 transitions. [2022-11-18 19:48:55,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 349 transitions, 1000 flow [2022-11-18 19:48:55,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 349 transitions, 984 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:48:55,974 INFO L231 Difference]: Finished difference. Result has 298 places, 283 transitions, 613 flow [2022-11-18 19:48:55,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=613, PETRI_PLACES=298, PETRI_TRANSITIONS=283} [2022-11-18 19:48:55,983 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 8 predicate places. [2022-11-18 19:48:55,983 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 283 transitions, 613 flow [2022-11-18 19:48:55,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:55,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:55,986 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:55,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:56,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 19:48:56,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:48:56,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:56,194 INFO L85 PathProgramCache]: Analyzing trace with hash 21358096, now seen corresponding path program 1 times [2022-11-18 19:48:56,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:56,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704945724] [2022-11-18 19:48:56,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:56,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:56,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:48:56,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645191165] [2022-11-18 19:48:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:56,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:56,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:56,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:56,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:48:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:56,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:48:56,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:56,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:56,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:56,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704945724] [2022-11-18 19:48:56,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:48:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645191165] [2022-11-18 19:48:56,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645191165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:56,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:56,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:48:56,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042318350] [2022-11-18 19:48:56,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:56,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:48:56,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:48:56,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:48:56,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 335 [2022-11-18 19:48:56,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 283 transitions, 613 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:56,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:56,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 335 [2022-11-18 19:48:56,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:56,600 INFO L130 PetriNetUnfolder]: 24/584 cut-off events. [2022-11-18 19:48:56,600 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-18 19:48:56,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 584 events. 24/584 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2119 event pairs, 4 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 330. Up to 28 conditions per place. [2022-11-18 19:48:56,607 INFO L137 encePairwiseOnDemand]: 327/335 looper letters, 38 selfloop transitions, 6 changer transitions 0/295 dead transitions. [2022-11-18 19:48:56,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 295 transitions, 723 flow [2022-11-18 19:48:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:48:56,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:48:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1471 transitions. [2022-11-18 19:48:56,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8782089552238806 [2022-11-18 19:48:56,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1471 transitions. [2022-11-18 19:48:56,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1471 transitions. [2022-11-18 19:48:56,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:56,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1471 transitions. [2022-11-18 19:48:56,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:56,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:56,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:56,624 INFO L175 Difference]: Start difference. First operand has 298 places, 283 transitions, 613 flow. Second operand 5 states and 1471 transitions. [2022-11-18 19:48:56,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 295 transitions, 723 flow [2022-11-18 19:48:56,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 295 transitions, 705 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 19:48:56,635 INFO L231 Difference]: Finished difference. Result has 284 places, 281 transitions, 597 flow [2022-11-18 19:48:56,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=597, PETRI_PLACES=284, PETRI_TRANSITIONS=281} [2022-11-18 19:48:56,637 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, -6 predicate places. [2022-11-18 19:48:56,637 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 281 transitions, 597 flow [2022-11-18 19:48:56,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:56,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:56,638 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] [2022-11-18 19:48:56,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:56,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:56,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:48:56,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash -326677687, now seen corresponding path program 1 times [2022-11-18 19:48:56,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:56,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205544233] [2022-11-18 19:48:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:56,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:56,874 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:48:56,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313824155] [2022-11-18 19:48:56,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:56,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:56,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:56,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:48:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:57,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:48:57,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:57,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:57,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:57,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205544233] [2022-11-18 19:48:57,940 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:48:57,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313824155] [2022-11-18 19:48:57,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313824155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:57,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:57,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:48:57,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025599954] [2022-11-18 19:48:57,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:57,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:48:57,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:57,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:48:57,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:48:57,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 335 [2022-11-18 19:48:57,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 281 transitions, 597 flow. Second operand has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:57,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:57,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 335 [2022-11-18 19:48:57,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:00,098 INFO L130 PetriNetUnfolder]: 46/605 cut-off events. [2022-11-18 19:49:00,099 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-18 19:49:00,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 605 events. 46/605 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2447 event pairs, 26 based on Foata normal form. 1/524 useless extension candidates. Maximal degree in co-relation 418. Up to 99 conditions per place. [2022-11-18 19:49:00,102 INFO L137 encePairwiseOnDemand]: 316/335 looper letters, 137 selfloop transitions, 21 changer transitions 0/345 dead transitions. [2022-11-18 19:49:00,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 345 transitions, 1043 flow [2022-11-18 19:49:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:49:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 19:49:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4239 transitions. [2022-11-18 19:49:00,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6326865671641791 [2022-11-18 19:49:00,115 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4239 transitions. [2022-11-18 19:49:00,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4239 transitions. [2022-11-18 19:49:00,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:00,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4239 transitions. [2022-11-18 19:49:00,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 211.95) internal successors, (4239), 20 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 335.0) internal successors, (7035), 21 states have internal predecessors, (7035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,146 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 335.0) internal successors, (7035), 21 states have internal predecessors, (7035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,146 INFO L175 Difference]: Start difference. First operand has 284 places, 281 transitions, 597 flow. Second operand 20 states and 4239 transitions. [2022-11-18 19:49:00,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 345 transitions, 1043 flow [2022-11-18 19:49:00,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 345 transitions, 1031 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:49:00,156 INFO L231 Difference]: Finished difference. Result has 302 places, 284 transitions, 647 flow [2022-11-18 19:49:00,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=647, PETRI_PLACES=302, PETRI_TRANSITIONS=284} [2022-11-18 19:49:00,158 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 12 predicate places. [2022-11-18 19:49:00,158 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 284 transitions, 647 flow [2022-11-18 19:49:00,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:00,160 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] [2022-11-18 19:49:00,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:00,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:00,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1537073025, now seen corresponding path program 1 times [2022-11-18 19:49:00,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:00,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616574018] [2022-11-18 19:49:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:00,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:00,398 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:49:00,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414560489] [2022-11-18 19:49:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:00,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:00,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:00,405 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:00,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:49:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:00,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:49:00,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:00,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:49:00,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:00,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616574018] [2022-11-18 19:49:00,814 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:49:00,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414560489] [2022-11-18 19:49:00,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414560489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:00,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:00,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:49:00,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970580184] [2022-11-18 19:49:00,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:00,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:49:00,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:49:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:49:00,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 335 [2022-11-18 19:49:00,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 284 transitions, 647 flow. Second operand has 10 states, 10 states have (on average 208.5) internal successors, (2085), 10 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:00,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 335 [2022-11-18 19:49:00,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:01,945 INFO L130 PetriNetUnfolder]: 46/604 cut-off events. [2022-11-18 19:49:01,945 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-18 19:49:01,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 604 events. 46/604 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2464 event pairs, 26 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 436. Up to 95 conditions per place. [2022-11-18 19:49:01,949 INFO L137 encePairwiseOnDemand]: 318/335 looper letters, 137 selfloop transitions, 18 changer transitions 0/344 dead transitions. [2022-11-18 19:49:01,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 344 transitions, 1079 flow [2022-11-18 19:49:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:49:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:49:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3864 transitions. [2022-11-18 19:49:01,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6407960199004975 [2022-11-18 19:49:01,963 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3864 transitions. [2022-11-18 19:49:01,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3864 transitions. [2022-11-18 19:49:01,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:01,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3864 transitions. [2022-11-18 19:49:01,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 214.66666666666666) internal successors, (3864), 18 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) [2022-11-18 19:49:01,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 335.0) internal successors, (6365), 19 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:01,989 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 335.0) internal successors, (6365), 19 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:01,989 INFO L175 Difference]: Start difference. First operand has 302 places, 284 transitions, 647 flow. Second operand 18 states and 3864 transitions. [2022-11-18 19:49:01,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 344 transitions, 1079 flow [2022-11-18 19:49:01,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 344 transitions, 1041 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-18 19:49:01,999 INFO L231 Difference]: Finished difference. Result has 303 places, 283 transitions, 641 flow [2022-11-18 19:49:02,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=641, PETRI_PLACES=303, PETRI_TRANSITIONS=283} [2022-11-18 19:49:02,001 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 13 predicate places. [2022-11-18 19:49:02,001 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 283 transitions, 641 flow [2022-11-18 19:49:02,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 208.5) internal successors, (2085), 10 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:02,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:02,003 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] [2022-11-18 19:49:02,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:02,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-18 19:49:02,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1396878865, now seen corresponding path program 1 times [2022-11-18 19:49:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:02,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181604196] [2022-11-18 19:49:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:02,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:02,238 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:49:02,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443008457] [2022-11-18 19:49:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:02,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:02,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:02,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:02,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:49:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:02,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:49:02,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:02,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:49:02,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:02,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181604196] [2022-11-18 19:49:02,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:49:02,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443008457] [2022-11-18 19:49:02,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443008457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:02,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:02,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:49:02,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098159976] [2022-11-18 19:49:02,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:02,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:49:02,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:02,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:49:02,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:49:02,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 335 [2022-11-18 19:49:02,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 283 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:02,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:02,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 335 [2022-11-18 19:49:02,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:02,647 INFO L130 PetriNetUnfolder]: 26/830 cut-off events. [2022-11-18 19:49:02,647 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-18 19:49:02,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 830 events. 26/830 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3798 event pairs, 0 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 475. Up to 79 conditions per place. [2022-11-18 19:49:02,651 INFO L137 encePairwiseOnDemand]: 315/335 looper letters, 56 selfloop transitions, 17 changer transitions 0/316 dead transitions. [2022-11-18 19:49:02,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 316 transitions, 857 flow [2022-11-18 19:49:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:49:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:49:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1451 transitions. [2022-11-18 19:49:02,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.866268656716418 [2022-11-18 19:49:02,656 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1451 transitions. [2022-11-18 19:49:02,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1451 transitions. [2022-11-18 19:49:02,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:02,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1451 transitions. [2022-11-18 19:49:02,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:02,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:02,666 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:02,666 INFO L175 Difference]: Start difference. First operand has 303 places, 283 transitions, 641 flow. Second operand 5 states and 1451 transitions. [2022-11-18 19:49:02,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 316 transitions, 857 flow [2022-11-18 19:49:02,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 316 transitions, 822 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-18 19:49:02,674 INFO L231 Difference]: Finished difference. Result has 295 places, 297 transitions, 736 flow [2022-11-18 19:49:02,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=736, PETRI_PLACES=295, PETRI_TRANSITIONS=297} [2022-11-18 19:49:02,676 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 5 predicate places. [2022-11-18 19:49:02,676 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 297 transitions, 736 flow [2022-11-18 19:49:02,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:02,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:02,677 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:02,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:02,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:02,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash -353571270, now seen corresponding path program 1 times [2022-11-18 19:49:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:02,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435715265] [2022-11-18 19:49:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:02,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:02,907 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:49:02,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055501640] [2022-11-18 19:49:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:02,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:02,909 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:02,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:49:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:03,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:49:03,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:03,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:49:03,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:03,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435715265] [2022-11-18 19:49:03,033 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:49:03,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055501640] [2022-11-18 19:49:03,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055501640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:03,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:03,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:49:03,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585802153] [2022-11-18 19:49:03,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:03,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:49:03,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:49:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:49:03,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 335 [2022-11-18 19:49:03,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 297 transitions, 736 flow. Second operand has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:03,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 335 [2022-11-18 19:49:03,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:03,208 INFO L130 PetriNetUnfolder]: 26/818 cut-off events. [2022-11-18 19:49:03,208 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-11-18 19:49:03,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 818 events. 26/818 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3731 event pairs, 0 based on Foata normal form. 12/742 useless extension candidates. Maximal degree in co-relation 593. Up to 70 conditions per place. [2022-11-18 19:49:03,213 INFO L137 encePairwiseOnDemand]: 321/335 looper letters, 29 selfloop transitions, 19 changer transitions 0/291 dead transitions. [2022-11-18 19:49:03,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 291 transitions, 802 flow [2022-11-18 19:49:03,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:49:03,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:49:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-18 19:49:03,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8507462686567164 [2022-11-18 19:49:03,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-18 19:49:03,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-18 19:49:03,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:03,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-18 19:49:03,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,225 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,225 INFO L175 Difference]: Start difference. First operand has 295 places, 297 transitions, 736 flow. Second operand 4 states and 1140 transitions. [2022-11-18 19:49:03,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 291 transitions, 802 flow [2022-11-18 19:49:03,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 291 transitions, 786 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:49:03,232 INFO L231 Difference]: Finished difference. Result has 293 places, 291 transitions, 728 flow [2022-11-18 19:49:03,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=728, PETRI_PLACES=293, PETRI_TRANSITIONS=291} [2022-11-18 19:49:03,233 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 3 predicate places. [2022-11-18 19:49:03,234 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 291 transitions, 728 flow [2022-11-18 19:49:03,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:03,235 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:03,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:03,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:03,441 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:03,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:03,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1657096805, now seen corresponding path program 1 times [2022-11-18 19:49:03,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:03,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460498912] [2022-11-18 19:49:03,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:03,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:03,460 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:49:03,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851469742] [2022-11-18 19:49:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:03,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:03,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:03,462 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:03,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:49:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:03,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:49:03,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:03,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:03,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:03,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460498912] [2022-11-18 19:49:03,701 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:49:03,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851469742] [2022-11-18 19:49:03,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851469742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:03,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:49:03,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-18 19:49:03,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779775055] [2022-11-18 19:49:03,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:03,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:49:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:03,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:49:03,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:49:03,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 335 [2022-11-18 19:49:03,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 291 transitions, 728 flow. Second operand has 10 states, 10 states have (on average 277.5) internal successors, (2775), 10 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:03,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 335 [2022-11-18 19:49:03,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:04,274 INFO L130 PetriNetUnfolder]: 62/1766 cut-off events. [2022-11-18 19:49:04,274 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2022-11-18 19:49:04,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 1766 events. 62/1766 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 11589 event pairs, 0 based on Foata normal form. 18/1564 useless extension candidates. Maximal degree in co-relation 1134. Up to 67 conditions per place. [2022-11-18 19:49:04,285 INFO L137 encePairwiseOnDemand]: 315/335 looper letters, 104 selfloop transitions, 50 changer transitions 0/397 dead transitions. [2022-11-18 19:49:04,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 397 transitions, 1366 flow [2022-11-18 19:49:04,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:49:04,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 19:49:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4013 transitions. [2022-11-18 19:49:04,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8556503198294243 [2022-11-18 19:49:04,294 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4013 transitions. [2022-11-18 19:49:04,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4013 transitions. [2022-11-18 19:49:04,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:04,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4013 transitions. [2022-11-18 19:49:04,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 286.64285714285717) internal successors, (4013), 14 states have internal predecessors, (4013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:04,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:04,315 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:04,315 INFO L175 Difference]: Start difference. First operand has 293 places, 291 transitions, 728 flow. Second operand 14 states and 4013 transitions. [2022-11-18 19:49:04,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 397 transitions, 1366 flow [2022-11-18 19:49:04,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 397 transitions, 1286 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:49:04,324 INFO L231 Difference]: Finished difference. Result has 307 places, 324 transitions, 991 flow [2022-11-18 19:49:04,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=991, PETRI_PLACES=307, PETRI_TRANSITIONS=324} [2022-11-18 19:49:04,325 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 17 predicate places. [2022-11-18 19:49:04,326 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 324 transitions, 991 flow [2022-11-18 19:49:04,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 277.5) internal successors, (2775), 10 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:04,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:04,327 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:04,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:04,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:49:04,532 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1051192175, now seen corresponding path program 2 times [2022-11-18 19:49:04,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:04,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497290583] [2022-11-18 19:49:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:04,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:04,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:49:04,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768611000] [2022-11-18 19:49:04,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:49:04,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:04,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:04,557 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:04,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:49:04,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:49:04,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:04,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:49:04,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:07,388 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) .cse0)))) is different from true [2022-11-18 19:49:09,252 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post27#1| 1) .cse0)))) is different from true [2022-11-18 19:49:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 20 not checked. [2022-11-18 19:49:09,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:49:38,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:38,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497290583] [2022-11-18 19:49:38,872 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:49:38,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768611000] [2022-11-18 19:49:38,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768611000] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:38,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:49:38,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-18 19:49:38,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217830114] [2022-11-18 19:49:38,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:38,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:49:38,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:38,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:49:38,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=78, Unknown=14, NotChecked=38, Total=156 [2022-11-18 19:49:38,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 335 [2022-11-18 19:49:38,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 324 transitions, 991 flow. Second operand has 13 states, 13 states have (on average 216.69230769230768) internal successors, (2817), 13 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:38,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:38,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 335 [2022-11-18 19:49:38,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:01,424 WARN L233 SmtUtils]: Spent 8.70s on a formula simplification. DAG size of input: 17 DAG size of output: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:50:13,304 WARN L233 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 18 DAG size of output: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:50:28,394 INFO L130 PetriNetUnfolder]: 812/4184 cut-off events. [2022-11-18 19:50:28,394 INFO L131 PetriNetUnfolder]: For 527/527 co-relation queries the response was YES. [2022-11-18 19:50:28,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6363 conditions, 4184 events. 812/4184 cut-off events. For 527/527 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 35620 event pairs, 410 based on Foata normal form. 2/3166 useless extension candidates. Maximal degree in co-relation 5026. Up to 1325 conditions per place. [2022-11-18 19:50:28,422 INFO L137 encePairwiseOnDemand]: 310/335 looper letters, 142 selfloop transitions, 37 changer transitions 0/365 dead transitions. [2022-11-18 19:50:28,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 365 transitions, 1431 flow [2022-11-18 19:50:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:50:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:50:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2909 transitions. [2022-11-18 19:50:28,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6679678530424799 [2022-11-18 19:50:28,431 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2909 transitions. [2022-11-18 19:50:28,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2909 transitions. [2022-11-18 19:50:28,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:28,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2909 transitions. [2022-11-18 19:50:28,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 223.76923076923077) internal successors, (2909), 13 states have internal predecessors, (2909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:28,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:28,514 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:28,514 INFO L175 Difference]: Start difference. First operand has 307 places, 324 transitions, 991 flow. Second operand 13 states and 2909 transitions. [2022-11-18 19:50:28,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 365 transitions, 1431 flow [2022-11-18 19:50:28,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 365 transitions, 1315 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 19:50:28,524 INFO L231 Difference]: Finished difference. Result has 315 places, 327 transitions, 982 flow [2022-11-18 19:50:28,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=982, PETRI_PLACES=315, PETRI_TRANSITIONS=327} [2022-11-18 19:50:28,526 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 25 predicate places. [2022-11-18 19:50:28,526 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 327 transitions, 982 flow [2022-11-18 19:50:28,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 216.69230769230768) internal successors, (2817), 13 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:28,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:28,528 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:28,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:28,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:28,733 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:28,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:28,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1175049801, now seen corresponding path program 1 times [2022-11-18 19:50:28,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:28,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214744152] [2022-11-18 19:50:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:28,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:28,775 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:28,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527510337] [2022-11-18 19:50:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:28,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:28,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:28,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:28,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:50:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:28,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:50:28,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:29,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:29,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:29,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214744152] [2022-11-18 19:50:29,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:29,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527510337] [2022-11-18 19:50:29,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527510337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:29,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:29,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:50:29,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948442344] [2022-11-18 19:50:29,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:29,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:50:29,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:29,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:50:29,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:50:29,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 335 [2022-11-18 19:50:29,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 327 transitions, 982 flow. Second operand has 7 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:29,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:29,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 335 [2022-11-18 19:50:29,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:30,548 INFO L130 PetriNetUnfolder]: 330/5172 cut-off events. [2022-11-18 19:50:30,550 INFO L131 PetriNetUnfolder]: For 736/736 co-relation queries the response was YES. [2022-11-18 19:50:30,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7089 conditions, 5172 events. 330/5172 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 47335 event pairs, 126 based on Foata normal form. 0/4382 useless extension candidates. Maximal degree in co-relation 5516. Up to 341 conditions per place. [2022-11-18 19:50:30,582 INFO L137 encePairwiseOnDemand]: 319/335 looper letters, 146 selfloop transitions, 34 changer transitions 0/423 dead transitions. [2022-11-18 19:50:30,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 423 transitions, 1693 flow [2022-11-18 19:50:30,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:50:30,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 19:50:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4119 transitions. [2022-11-18 19:50:30,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197014925373134 [2022-11-18 19:50:30,594 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4119 transitions. [2022-11-18 19:50:30,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4119 transitions. [2022-11-18 19:50:30,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:30,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4119 transitions. [2022-11-18 19:50:30,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 274.6) internal successors, (4119), 15 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:30,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 335.0) internal successors, (5360), 16 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:30,619 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 335.0) internal successors, (5360), 16 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:30,619 INFO L175 Difference]: Start difference. First operand has 315 places, 327 transitions, 982 flow. Second operand 15 states and 4119 transitions. [2022-11-18 19:50:30,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 423 transitions, 1693 flow [2022-11-18 19:50:30,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 423 transitions, 1644 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 19:50:30,632 INFO L231 Difference]: Finished difference. Result has 328 places, 349 transitions, 1151 flow [2022-11-18 19:50:30,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1151, PETRI_PLACES=328, PETRI_TRANSITIONS=349} [2022-11-18 19:50:30,635 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 38 predicate places. [2022-11-18 19:50:30,635 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 349 transitions, 1151 flow [2022-11-18 19:50:30,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:30,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:30,637 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:30,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:30,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 19:50:30,846 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash 368565, now seen corresponding path program 1 times [2022-11-18 19:50:30,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:30,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798148381] [2022-11-18 19:50:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:30,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:30,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853739300] [2022-11-18 19:50:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:30,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:30,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:30,892 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:30,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:50:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:31,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:50:31,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:31,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:31,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:31,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798148381] [2022-11-18 19:50:31,092 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:31,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853739300] [2022-11-18 19:50:31,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853739300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:31,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:31,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:50:31,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781572970] [2022-11-18 19:50:31,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:31,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:50:31,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:31,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:50:31,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:50:31,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 335 [2022-11-18 19:50:31,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 349 transitions, 1151 flow. Second operand has 5 states, 5 states have (on average 275.4) internal successors, (1377), 5 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:31,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:31,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 335 [2022-11-18 19:50:31,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:32,607 INFO L130 PetriNetUnfolder]: 506/5730 cut-off events. [2022-11-18 19:50:32,608 INFO L131 PetriNetUnfolder]: For 1021/1021 co-relation queries the response was YES. [2022-11-18 19:50:32,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 5730 events. 506/5730 cut-off events. For 1021/1021 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 56110 event pairs, 318 based on Foata normal form. 0/4984 useless extension candidates. Maximal degree in co-relation 8129. Up to 1169 conditions per place. [2022-11-18 19:50:32,657 INFO L137 encePairwiseOnDemand]: 328/335 looper letters, 46 selfloop transitions, 6 changer transitions 0/362 dead transitions. [2022-11-18 19:50:32,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 362 transitions, 1286 flow [2022-11-18 19:50:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:50:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:50:32,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1685 transitions. [2022-11-18 19:50:32,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383084577114428 [2022-11-18 19:50:32,663 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1685 transitions. [2022-11-18 19:50:32,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1685 transitions. [2022-11-18 19:50:32,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:32,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1685 transitions. [2022-11-18 19:50:32,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.8333333333333) internal successors, (1685), 6 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:32,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:32,676 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:32,676 INFO L175 Difference]: Start difference. First operand has 328 places, 349 transitions, 1151 flow. Second operand 6 states and 1685 transitions. [2022-11-18 19:50:32,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 362 transitions, 1286 flow [2022-11-18 19:50:32,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 362 transitions, 1286 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:50:32,694 INFO L231 Difference]: Finished difference. Result has 336 places, 352 transitions, 1183 flow [2022-11-18 19:50:32,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1183, PETRI_PLACES=336, PETRI_TRANSITIONS=352} [2022-11-18 19:50:32,700 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 46 predicate places. [2022-11-18 19:50:32,700 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 352 transitions, 1183 flow [2022-11-18 19:50:32,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.4) internal successors, (1377), 5 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:32,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:32,701 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:32,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:32,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:50:32,914 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:32,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash 411188043, now seen corresponding path program 1 times [2022-11-18 19:50:32,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:32,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636319436] [2022-11-18 19:50:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:32,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:32,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:32,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714851084] [2022-11-18 19:50:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:32,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:32,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:32,950 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:32,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:50:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:50:33,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-18 19:50:33,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:33,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:33,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636319436] [2022-11-18 19:50:33,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:33,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714851084] [2022-11-18 19:50:33,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714851084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:33,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:33,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:50:33,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715073907] [2022-11-18 19:50:33,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:33,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:50:33,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:33,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:50:33,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:50:33,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 335 [2022-11-18 19:50:33,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 352 transitions, 1183 flow. Second operand has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:33,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:33,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 335 [2022-11-18 19:50:33,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:34,578 INFO L130 PetriNetUnfolder]: 206/4472 cut-off events. [2022-11-18 19:50:34,578 INFO L131 PetriNetUnfolder]: For 1462/1476 co-relation queries the response was YES. [2022-11-18 19:50:34,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6543 conditions, 4472 events. 206/4472 cut-off events. For 1462/1476 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 38954 event pairs, 50 based on Foata normal form. 16/4010 useless extension candidates. Maximal degree in co-relation 6438. Up to 271 conditions per place. [2022-11-18 19:50:34,609 INFO L137 encePairwiseOnDemand]: 319/335 looper letters, 118 selfloop transitions, 28 changer transitions 0/400 dead transitions. [2022-11-18 19:50:34,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 400 transitions, 1649 flow [2022-11-18 19:50:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:50:34,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 19:50:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3896 transitions. [2022-11-18 19:50:34,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8307036247334755 [2022-11-18 19:50:34,617 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3896 transitions. [2022-11-18 19:50:34,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3896 transitions. [2022-11-18 19:50:34,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:34,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3896 transitions. [2022-11-18 19:50:34,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 278.2857142857143) internal successors, (3896), 14 states have internal predecessors, (3896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:34,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:34,634 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:34,634 INFO L175 Difference]: Start difference. First operand has 336 places, 352 transitions, 1183 flow. Second operand 14 states and 3896 transitions. [2022-11-18 19:50:34,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 400 transitions, 1649 flow [2022-11-18 19:50:34,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 400 transitions, 1623 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-11-18 19:50:34,651 INFO L231 Difference]: Finished difference. Result has 345 places, 348 transitions, 1202 flow [2022-11-18 19:50:34,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1202, PETRI_PLACES=345, PETRI_TRANSITIONS=348} [2022-11-18 19:50:34,653 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 55 predicate places. [2022-11-18 19:50:34,653 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 348 transitions, 1202 flow [2022-11-18 19:50:34,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:34,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:34,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:34,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:34,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:34,862 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:34,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash -152480300, now seen corresponding path program 1 times [2022-11-18 19:50:34,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:34,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535111012] [2022-11-18 19:50:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:34,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:34,885 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:34,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342013299] [2022-11-18 19:50:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:34,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:34,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:34,904 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:34,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:50:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:35,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:50:35,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:35,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:35,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:35,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535111012] [2022-11-18 19:50:35,149 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:35,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342013299] [2022-11-18 19:50:35,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342013299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:35,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:35,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:50:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025149967] [2022-11-18 19:50:35,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:35,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:35,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:35,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:35,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:35,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-18 19:50:35,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 348 transitions, 1202 flow. Second operand has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:35,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:35,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-18 19:50:35,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:36,085 INFO L130 PetriNetUnfolder]: 120/4092 cut-off events. [2022-11-18 19:50:36,085 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2022-11-18 19:50:36,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5762 conditions, 4092 events. 120/4092 cut-off events. For 713/713 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 34969 event pairs, 0 based on Foata normal form. 0/3720 useless extension candidates. Maximal degree in co-relation 5379. Up to 282 conditions per place. [2022-11-18 19:50:36,119 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 24 selfloop transitions, 5 changer transitions 0/359 dead transitions. [2022-11-18 19:50:36,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 359 transitions, 1286 flow [2022-11-18 19:50:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:50:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:50:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1525 transitions. [2022-11-18 19:50:36,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9104477611940298 [2022-11-18 19:50:36,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1525 transitions. [2022-11-18 19:50:36,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1525 transitions. [2022-11-18 19:50:36,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:36,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1525 transitions. [2022-11-18 19:50:36,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:36,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:36,133 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:36,133 INFO L175 Difference]: Start difference. First operand has 345 places, 348 transitions, 1202 flow. Second operand 5 states and 1525 transitions. [2022-11-18 19:50:36,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 359 transitions, 1286 flow [2022-11-18 19:50:36,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 359 transitions, 1238 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 19:50:36,152 INFO L231 Difference]: Finished difference. Result has 344 places, 351 transitions, 1188 flow [2022-11-18 19:50:36,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1188, PETRI_PLACES=344, PETRI_TRANSITIONS=351} [2022-11-18 19:50:36,154 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 54 predicate places. [2022-11-18 19:50:36,154 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 351 transitions, 1188 flow [2022-11-18 19:50:36,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:36,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:36,155 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:36,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:36,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:36,361 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:36,362 INFO L85 PathProgramCache]: Analyzing trace with hash -820742932, now seen corresponding path program 1 times [2022-11-18 19:50:36,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:36,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992625047] [2022-11-18 19:50:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:36,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:36,391 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:36,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605371695] [2022-11-18 19:50:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:36,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:36,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:36,393 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:36,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:50:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:36,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:50:36,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:50:36,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:36,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:36,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992625047] [2022-11-18 19:50:36,599 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:36,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605371695] [2022-11-18 19:50:36,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605371695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:36,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:36,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:50:36,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697519109] [2022-11-18 19:50:36,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:36,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:36,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:36,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:36,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:36,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-18 19:50:36,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 351 transitions, 1188 flow. Second operand has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:36,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:36,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-18 19:50:36,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:37,979 INFO L130 PetriNetUnfolder]: 544/5724 cut-off events. [2022-11-18 19:50:37,979 INFO L131 PetriNetUnfolder]: For 863/863 co-relation queries the response was YES. [2022-11-18 19:50:38,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9067 conditions, 5724 events. 544/5724 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 55319 event pairs, 180 based on Foata normal form. 0/5200 useless extension candidates. Maximal degree in co-relation 7887. Up to 677 conditions per place. [2022-11-18 19:50:38,033 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 26 selfloop transitions, 8 changer transitions 0/366 dead transitions. [2022-11-18 19:50:38,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 366 transitions, 1295 flow [2022-11-18 19:50:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:50:38,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:50:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1527 transitions. [2022-11-18 19:50:38,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9116417910447762 [2022-11-18 19:50:38,037 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1527 transitions. [2022-11-18 19:50:38,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1527 transitions. [2022-11-18 19:50:38,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:38,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1527 transitions. [2022-11-18 19:50:38,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.4) internal successors, (1527), 5 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:38,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:38,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:38,137 INFO L175 Difference]: Start difference. First operand has 344 places, 351 transitions, 1188 flow. Second operand 5 states and 1527 transitions. [2022-11-18 19:50:38,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 366 transitions, 1295 flow [2022-11-18 19:50:38,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 366 transitions, 1295 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:50:38,156 INFO L231 Difference]: Finished difference. Result has 352 places, 355 transitions, 1238 flow [2022-11-18 19:50:38,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1238, PETRI_PLACES=352, PETRI_TRANSITIONS=355} [2022-11-18 19:50:38,157 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 62 predicate places. [2022-11-18 19:50:38,158 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 355 transitions, 1238 flow [2022-11-18 19:50:38,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:38,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:38,158 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:38,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:38,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:38,366 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:38,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:38,366 INFO L85 PathProgramCache]: Analyzing trace with hash -431921230, now seen corresponding path program 1 times [2022-11-18 19:50:38,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:38,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340629904] [2022-11-18 19:50:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:38,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:38,402 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:38,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780330487] [2022-11-18 19:50:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:38,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:38,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:38,404 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:38,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:50:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:38,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:50:38,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:38,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:38,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:38,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340629904] [2022-11-18 19:50:38,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:38,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780330487] [2022-11-18 19:50:38,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780330487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:38,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:38,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:50:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779617476] [2022-11-18 19:50:38,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:38,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:38,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:38,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-18 19:50:38,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 355 transitions, 1238 flow. Second operand has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:38,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:38,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-18 19:50:38,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:39,655 INFO L130 PetriNetUnfolder]: 120/4718 cut-off events. [2022-11-18 19:50:39,655 INFO L131 PetriNetUnfolder]: For 1041/1059 co-relation queries the response was YES. [2022-11-18 19:50:39,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6876 conditions, 4718 events. 120/4718 cut-off events. For 1041/1059 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 42667 event pairs, 0 based on Foata normal form. 40/4428 useless extension candidates. Maximal degree in co-relation 5872. Up to 320 conditions per place. [2022-11-18 19:50:39,681 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 14 selfloop transitions, 5 changer transitions 0/353 dead transitions. [2022-11-18 19:50:39,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 353 transitions, 1266 flow [2022-11-18 19:50:39,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:50:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:50:39,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1212 transitions. [2022-11-18 19:50:39,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044776119402985 [2022-11-18 19:50:39,684 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1212 transitions. [2022-11-18 19:50:39,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1212 transitions. [2022-11-18 19:50:39,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:39,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1212 transitions. [2022-11-18 19:50:39,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:39,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:39,690 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:39,690 INFO L175 Difference]: Start difference. First operand has 352 places, 355 transitions, 1238 flow. Second operand 4 states and 1212 transitions. [2022-11-18 19:50:39,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 353 transitions, 1266 flow [2022-11-18 19:50:39,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 353 transitions, 1262 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:50:39,709 INFO L231 Difference]: Finished difference. Result has 352 places, 353 transitions, 1234 flow [2022-11-18 19:50:39,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1234, PETRI_PLACES=352, PETRI_TRANSITIONS=353} [2022-11-18 19:50:39,710 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 62 predicate places. [2022-11-18 19:50:39,711 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 353 transitions, 1234 flow [2022-11-18 19:50:39,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:39,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:39,712 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:39,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:39,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:39,919 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash 326773712, now seen corresponding path program 1 times [2022-11-18 19:50:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:39,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858667101] [2022-11-18 19:50:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:39,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:39,964 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:39,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016549044] [2022-11-18 19:50:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:39,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:39,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:39,967 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:39,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:50:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:40,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:50:40,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:50:40,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:40,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:40,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858667101] [2022-11-18 19:50:40,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:40,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016549044] [2022-11-18 19:50:40,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016549044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:40,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:40,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:50:40,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965308772] [2022-11-18 19:50:40,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:40,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:40,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:40,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:40,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:40,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-18 19:50:40,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 353 transitions, 1234 flow. Second operand has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:40,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:40,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-18 19:50:40,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:41,607 INFO L130 PetriNetUnfolder]: 548/6420 cut-off events. [2022-11-18 19:50:41,607 INFO L131 PetriNetUnfolder]: For 1499/1567 co-relation queries the response was YES. [2022-11-18 19:50:41,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10175 conditions, 6420 events. 548/6420 cut-off events. For 1499/1567 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 64211 event pairs, 176 based on Foata normal form. 72/5896 useless extension candidates. Maximal degree in co-relation 8279. Up to 760 conditions per place. [2022-11-18 19:50:41,659 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 15 selfloop transitions, 8 changer transitions 0/353 dead transitions. [2022-11-18 19:50:41,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 353 transitions, 1276 flow [2022-11-18 19:50:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:50:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:50:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1214 transitions. [2022-11-18 19:50:41,663 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9059701492537313 [2022-11-18 19:50:41,663 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1214 transitions. [2022-11-18 19:50:41,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1214 transitions. [2022-11-18 19:50:41,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:41,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1214 transitions. [2022-11-18 19:50:41,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.5) internal successors, (1214), 4 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:41,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:41,670 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:41,670 INFO L175 Difference]: Start difference. First operand has 352 places, 353 transitions, 1234 flow. Second operand 4 states and 1214 transitions. [2022-11-18 19:50:41,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 353 transitions, 1276 flow [2022-11-18 19:50:41,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 353 transitions, 1256 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:50:41,698 INFO L231 Difference]: Finished difference. Result has 349 places, 351 transitions, 1220 flow [2022-11-18 19:50:41,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1220, PETRI_PLACES=349, PETRI_TRANSITIONS=351} [2022-11-18 19:50:41,700 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 59 predicate places. [2022-11-18 19:50:41,700 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 351 transitions, 1220 flow [2022-11-18 19:50:41,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:41,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:41,701 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:41,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:41,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:50:41,908 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:41,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:41,908 INFO L85 PathProgramCache]: Analyzing trace with hash -99415019, now seen corresponding path program 1 times [2022-11-18 19:50:41,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:41,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156122195] [2022-11-18 19:50:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:41,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:41,945 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:41,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164923237] [2022-11-18 19:50:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:41,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:41,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:41,950 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:41,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:50:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:42,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:50:42,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:42,430 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 19:50:42,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 19:50:42,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:42,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156122195] [2022-11-18 19:50:42,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:42,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164923237] [2022-11-18 19:50:42,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164923237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:42,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:50:42,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2022-11-18 19:50:42,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440267058] [2022-11-18 19:50:42,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:42,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:50:42,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:42,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:50:42,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:50:42,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 335 [2022-11-18 19:50:42,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 351 transitions, 1220 flow. Second operand has 21 states, 21 states have (on average 259.04761904761904) internal successors, (5440), 21 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:42,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:42,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 335 [2022-11-18 19:50:42,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:45,968 INFO L130 PetriNetUnfolder]: 340/7786 cut-off events. [2022-11-18 19:50:45,969 INFO L131 PetriNetUnfolder]: For 2388/2404 co-relation queries the response was YES. [2022-11-18 19:50:46,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12309 conditions, 7786 events. 340/7786 cut-off events. For 2388/2404 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 80209 event pairs, 136 based on Foata normal form. 18/7230 useless extension candidates. Maximal degree in co-relation 10650. Up to 351 conditions per place. [2022-11-18 19:50:46,050 INFO L137 encePairwiseOnDemand]: 311/335 looper letters, 145 selfloop transitions, 79 changer transitions 0/456 dead transitions. [2022-11-18 19:50:46,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 456 transitions, 2120 flow [2022-11-18 19:50:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:50:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 19:50:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7844 transitions. [2022-11-18 19:50:46,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.780497512437811 [2022-11-18 19:50:46,058 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7844 transitions. [2022-11-18 19:50:46,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7844 transitions. [2022-11-18 19:50:46,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:46,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7844 transitions. [2022-11-18 19:50:46,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 261.46666666666664) internal successors, (7844), 30 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:46,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 335.0) internal successors, (10385), 31 states have internal predecessors, (10385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:46,086 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 335.0) internal successors, (10385), 31 states have internal predecessors, (10385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:46,086 INFO L175 Difference]: Start difference. First operand has 349 places, 351 transitions, 1220 flow. Second operand 30 states and 7844 transitions. [2022-11-18 19:50:46,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 456 transitions, 2120 flow [2022-11-18 19:50:46,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 456 transitions, 2104 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:50:46,114 INFO L231 Difference]: Finished difference. Result has 380 places, 381 transitions, 1613 flow [2022-11-18 19:50:46,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1613, PETRI_PLACES=380, PETRI_TRANSITIONS=381} [2022-11-18 19:50:46,115 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 90 predicate places. [2022-11-18 19:50:46,116 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 381 transitions, 1613 flow [2022-11-18 19:50:46,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 259.04761904761904) internal successors, (5440), 21 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:46,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:46,117 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:46,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:46,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:50:46,324 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:46,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:46,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2027773302, now seen corresponding path program 1 times [2022-11-18 19:50:46,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:46,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923884220] [2022-11-18 19:50:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:46,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:46,357 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:46,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030810629] [2022-11-18 19:50:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:46,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:46,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:46,359 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:46,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:50:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:46,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:50:46,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:46,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:47,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:47,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923884220] [2022-11-18 19:50:47,266 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:47,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030810629] [2022-11-18 19:50:47,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030810629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:47,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:50:47,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-18 19:50:47,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111873309] [2022-11-18 19:50:47,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:47,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:50:47,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:47,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:50:47,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:50:47,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 335 [2022-11-18 19:50:47,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 381 transitions, 1613 flow. Second operand has 19 states, 19 states have (on average 249.78947368421052) internal successors, (4746), 19 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:47,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:47,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 335 [2022-11-18 19:50:47,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:50,377 INFO L130 PetriNetUnfolder]: 746/9516 cut-off events. [2022-11-18 19:50:50,377 INFO L131 PetriNetUnfolder]: For 2955/3013 co-relation queries the response was YES. [2022-11-18 19:50:50,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15721 conditions, 9516 events. 746/9516 cut-off events. For 2955/3013 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 103073 event pairs, 314 based on Foata normal form. 58/8610 useless extension candidates. Maximal degree in co-relation 12646. Up to 655 conditions per place. [2022-11-18 19:50:50,452 INFO L137 encePairwiseOnDemand]: 307/335 looper letters, 201 selfloop transitions, 74 changer transitions 0/492 dead transitions. [2022-11-18 19:50:50,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 492 transitions, 2567 flow [2022-11-18 19:50:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 19:50:50,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 19:50:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8569 transitions. [2022-11-18 19:50:50,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7523266022827041 [2022-11-18 19:50:50,461 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 8569 transitions. [2022-11-18 19:50:50,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 8569 transitions. [2022-11-18 19:50:50,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:50,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 8569 transitions. [2022-11-18 19:50:50,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 252.02941176470588) internal successors, (8569), 34 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:50,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 335.0) internal successors, (11725), 35 states have internal predecessors, (11725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:50,484 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 335.0) internal successors, (11725), 35 states have internal predecessors, (11725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:50,485 INFO L175 Difference]: Start difference. First operand has 380 places, 381 transitions, 1613 flow. Second operand 34 states and 8569 transitions. [2022-11-18 19:50:50,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 492 transitions, 2567 flow [2022-11-18 19:50:50,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 492 transitions, 2482 flow, removed 17 selfloop flow, removed 6 redundant places. [2022-11-18 19:50:50,521 INFO L231 Difference]: Finished difference. Result has 417 places, 395 transitions, 1792 flow [2022-11-18 19:50:50,521 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1792, PETRI_PLACES=417, PETRI_TRANSITIONS=395} [2022-11-18 19:50:50,522 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 127 predicate places. [2022-11-18 19:50:50,522 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 395 transitions, 1792 flow [2022-11-18 19:50:50,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 249.78947368421052) internal successors, (4746), 19 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:50,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:50,523 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:50,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:50,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:50:50,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:50,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1879518118, now seen corresponding path program 1 times [2022-11-18 19:50:50,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:50,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570381915] [2022-11-18 19:50:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:50,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:50,745 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:50,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678357712] [2022-11-18 19:50:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:50,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:50,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:50,747 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:50,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:50:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:50,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:50:50,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:51,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:51,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:51,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570381915] [2022-11-18 19:50:51,011 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:51,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678357712] [2022-11-18 19:50:51,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678357712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:51,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:51,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:50:51,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465691905] [2022-11-18 19:50:51,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:51,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:50:51,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:50:51,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:50:51,015 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 335 [2022-11-18 19:50:51,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 395 transitions, 1792 flow. Second operand has 6 states, 6 states have (on average 236.5) internal successors, (1419), 6 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:51,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:51,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 335 [2022-11-18 19:50:51,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:53,040 INFO L130 PetriNetUnfolder]: 436/8482 cut-off events. [2022-11-18 19:50:53,041 INFO L131 PetriNetUnfolder]: For 3171/3227 co-relation queries the response was YES. [2022-11-18 19:50:53,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13153 conditions, 8482 events. 436/8482 cut-off events. For 3171/3227 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 89589 event pairs, 126 based on Foata normal form. 52/7538 useless extension candidates. Maximal degree in co-relation 11621. Up to 1116 conditions per place. [2022-11-18 19:50:53,126 INFO L137 encePairwiseOnDemand]: 327/335 looper letters, 84 selfloop transitions, 5 changer transitions 14/413 dead transitions. [2022-11-18 19:50:53,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 413 transitions, 2020 flow [2022-11-18 19:50:53,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:50:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:50:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1685 transitions. [2022-11-18 19:50:53,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7185501066098081 [2022-11-18 19:50:53,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1685 transitions. [2022-11-18 19:50:53,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1685 transitions. [2022-11-18 19:50:53,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:53,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1685 transitions. [2022-11-18 19:50:53,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 240.71428571428572) internal successors, (1685), 7 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 335.0) internal successors, (2680), 8 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,134 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 335.0) internal successors, (2680), 8 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,134 INFO L175 Difference]: Start difference. First operand has 417 places, 395 transitions, 1792 flow. Second operand 7 states and 1685 transitions. [2022-11-18 19:50:53,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 413 transitions, 2020 flow [2022-11-18 19:50:53,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 413 transitions, 1942 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-18 19:50:53,167 INFO L231 Difference]: Finished difference. Result has 411 places, 386 transitions, 1670 flow [2022-11-18 19:50:53,168 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1670, PETRI_PLACES=411, PETRI_TRANSITIONS=386} [2022-11-18 19:50:53,169 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 121 predicate places. [2022-11-18 19:50:53,169 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 386 transitions, 1670 flow [2022-11-18 19:50:53,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.5) internal successors, (1419), 6 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:53,170 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:53,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-18 19:50:53,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:50:53,375 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:53,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:53,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1214217867, now seen corresponding path program 2 times [2022-11-18 19:50:53,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:53,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847342299] [2022-11-18 19:50:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:53,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:53,403 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:53,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079624136] [2022-11-18 19:50:53,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:50:53,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:53,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:53,405 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:53,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:50:53,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:50:53,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:53,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:50:53,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:55,602 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= c_~L~0 .cse0)))) is different from true [2022-11-18 19:50:58,053 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= |c_ULTIMATE.start_create_fresh_int_array_#in~size#1| .cse0)))) is different from true [2022-11-18 19:51:00,090 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= |c_ULTIMATE.start_create_fresh_int_array_~size#1| .cse0) (<= .cse0 2147483647)))) is different from true [2022-11-18 19:51:02,586 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) .cse0)))) is different from true [2022-11-18 19:51:04,517 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post27#1| 1) .cse0)))) is different from true [2022-11-18 19:51:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 20 not checked. [2022-11-18 19:51:04,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-18 19:51:04,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:04,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847342299] [2022-11-18 19:51:04,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:04,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079624136] [2022-11-18 19:51:04,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079624136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:04,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:04,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-18 19:51:04,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856570917] [2022-11-18 19:51:04,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:04,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:51:04,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:04,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:51:04,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=48, Unknown=5, NotChecked=80, Total=156 [2022-11-18 19:51:04,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 335 [2022-11-18 19:51:04,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 386 transitions, 1670 flow. Second operand has 13 states, 13 states have (on average 219.0) internal successors, (2847), 13 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:04,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:51:04,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 335 [2022-11-18 19:51:04,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:51:37,296 WARN L233 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 19 DAG size of output: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:51:45,052 WARN L233 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 20 DAG size of output: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:51:52,589 INFO L130 PetriNetUnfolder]: 2242/14698 cut-off events. [2022-11-18 19:51:52,590 INFO L131 PetriNetUnfolder]: For 11395/11547 co-relation queries the response was YES. [2022-11-18 19:51:52,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28981 conditions, 14698 events. 2242/14698 cut-off events. For 11395/11547 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 168548 event pairs, 1794 based on Foata normal form. 154/13198 useless extension candidates. Maximal degree in co-relation 28083. Up to 4455 conditions per place. [2022-11-18 19:51:52,772 INFO L137 encePairwiseOnDemand]: 315/335 looper letters, 182 selfloop transitions, 43 changer transitions 0/422 dead transitions. [2022-11-18 19:51:52,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 422 transitions, 2220 flow [2022-11-18 19:51:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:51:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 19:51:52,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3112 transitions. [2022-11-18 19:51:52,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6635394456289979 [2022-11-18 19:51:52,778 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3112 transitions. [2022-11-18 19:51:52,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3112 transitions. [2022-11-18 19:51:52,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:51:52,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3112 transitions. [2022-11-18 19:51:52,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 222.28571428571428) internal successors, (3112), 14 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:52,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:52,791 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:52,791 INFO L175 Difference]: Start difference. First operand has 411 places, 386 transitions, 1670 flow. Second operand 14 states and 3112 transitions. [2022-11-18 19:51:52,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 422 transitions, 2220 flow [2022-11-18 19:51:52,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 422 transitions, 2156 flow, removed 11 selfloop flow, removed 14 redundant places. [2022-11-18 19:51:52,887 INFO L231 Difference]: Finished difference. Result has 398 places, 385 transitions, 1688 flow [2022-11-18 19:51:52,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1688, PETRI_PLACES=398, PETRI_TRANSITIONS=385} [2022-11-18 19:51:52,888 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 108 predicate places. [2022-11-18 19:51:52,888 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 385 transitions, 1688 flow [2022-11-18 19:51:52,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 219.0) internal successors, (2847), 13 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:52,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:51:52,888 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:52,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:53,091 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:51:53,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1531979500, now seen corresponding path program 1 times [2022-11-18 19:51:53,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:53,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991467524] [2022-11-18 19:51:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:53,112 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:53,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627779081] [2022-11-18 19:51:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:53,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:53,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:53,114 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:53,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:51:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:53,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:51:53,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:53,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:51:53,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:53,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991467524] [2022-11-18 19:51:53,438 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:53,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627779081] [2022-11-18 19:51:53,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627779081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:53,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:53,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:51:53,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073319952] [2022-11-18 19:51:53,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:53,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:51:53,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:53,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:51:53,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:51:53,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 335 [2022-11-18 19:51:53,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 385 transitions, 1688 flow. Second operand has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:53,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:51:53,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 335 [2022-11-18 19:51:53,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:51:56,745 INFO L130 PetriNetUnfolder]: 1086/12662 cut-off events. [2022-11-18 19:51:56,745 INFO L131 PetriNetUnfolder]: For 5069/5105 co-relation queries the response was YES. [2022-11-18 19:51:56,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21181 conditions, 12662 events. 1086/12662 cut-off events. For 5069/5105 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 148297 event pairs, 600 based on Foata normal form. 0/11240 useless extension candidates. Maximal degree in co-relation 16771. Up to 2412 conditions per place. [2022-11-18 19:51:56,873 INFO L137 encePairwiseOnDemand]: 325/335 looper letters, 208 selfloop transitions, 38 changer transitions 0/482 dead transitions. [2022-11-18 19:51:56,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 482 transitions, 2575 flow [2022-11-18 19:51:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:51:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:51:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2801 transitions. [2022-11-18 19:51:56,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7601085481682497 [2022-11-18 19:51:56,878 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2801 transitions. [2022-11-18 19:51:56,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2801 transitions. [2022-11-18 19:51:56,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:51:56,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2801 transitions. [2022-11-18 19:51:56,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 254.63636363636363) internal successors, (2801), 11 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:56,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 335.0) internal successors, (4020), 12 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:56,888 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 335.0) internal successors, (4020), 12 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:56,888 INFO L175 Difference]: Start difference. First operand has 398 places, 385 transitions, 1688 flow. Second operand 11 states and 2801 transitions. [2022-11-18 19:51:56,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 482 transitions, 2575 flow [2022-11-18 19:51:56,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 482 transitions, 2502 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-18 19:51:56,928 INFO L231 Difference]: Finished difference. Result has 403 places, 401 transitions, 1845 flow [2022-11-18 19:51:56,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1845, PETRI_PLACES=403, PETRI_TRANSITIONS=401} [2022-11-18 19:51:56,929 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 113 predicate places. [2022-11-18 19:51:56,929 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 401 transitions, 1845 flow [2022-11-18 19:51:56,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:56,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:51:56,930 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:56,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:57,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:57,137 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:51:57,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1531978506, now seen corresponding path program 1 times [2022-11-18 19:51:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:57,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819423658] [2022-11-18 19:51:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:57,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:57,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:57,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112300017] [2022-11-18 19:51:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:57,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:57,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:57,157 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:57,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:51:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:57,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:51:57,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:57,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:51:57,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:57,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819423658] [2022-11-18 19:51:57,405 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:57,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112300017] [2022-11-18 19:51:57,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112300017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:57,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:57,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:57,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328811725] [2022-11-18 19:51:57,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:57,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:51:57,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:57,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:51:57,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:57,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 335 [2022-11-18 19:51:57,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 401 transitions, 1845 flow. Second operand has 4 states, 4 states have (on average 292.5) internal successors, (1170), 4 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:57,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:51:57,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 335 [2022-11-18 19:51:57,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:52:02,006 INFO L130 PetriNetUnfolder]: 2740/18194 cut-off events. [2022-11-18 19:52:02,007 INFO L131 PetriNetUnfolder]: For 6169/6205 co-relation queries the response was YES. [2022-11-18 19:52:02,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30096 conditions, 18194 events. 2740/18194 cut-off events. For 6169/6205 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 236584 event pairs, 580 based on Foata normal form. 0/15480 useless extension candidates. Maximal degree in co-relation 23244. Up to 3377 conditions per place. [2022-11-18 19:52:02,166 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 41 selfloop transitions, 6 changer transitions 0/423 dead transitions. [2022-11-18 19:52:02,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 423 transitions, 1989 flow [2022-11-18 19:52:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:52:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:52:02,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1502 transitions. [2022-11-18 19:52:02,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8967164179104478 [2022-11-18 19:52:02,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1502 transitions. [2022-11-18 19:52:02,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1502 transitions. [2022-11-18 19:52:02,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:52:02,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1502 transitions. [2022-11-18 19:52:02,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.4) internal successors, (1502), 5 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:02,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:02,174 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:02,174 INFO L175 Difference]: Start difference. First operand has 403 places, 401 transitions, 1845 flow. Second operand 5 states and 1502 transitions. [2022-11-18 19:52:02,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 423 transitions, 1989 flow [2022-11-18 19:52:02,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 423 transitions, 1979 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:52:02,211 INFO L231 Difference]: Finished difference. Result has 409 places, 405 transitions, 1877 flow [2022-11-18 19:52:02,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1877, PETRI_PLACES=409, PETRI_TRANSITIONS=405} [2022-11-18 19:52:02,213 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 119 predicate places. [2022-11-18 19:52:02,213 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 405 transitions, 1877 flow [2022-11-18 19:52:02,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.5) internal successors, (1170), 4 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:02,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:52:02,214 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:02,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:02,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:02,421 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:52:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:02,421 INFO L85 PathProgramCache]: Analyzing trace with hash 246694278, now seen corresponding path program 1 times [2022-11-18 19:52:02,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:02,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279360854] [2022-11-18 19:52:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:02,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:02,440 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:52:02,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274789662] [2022-11-18 19:52:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:02,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:02,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:02,442 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:02,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 19:52:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:02,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:52:02,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:02,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:52:02,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:02,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279360854] [2022-11-18 19:52:02,640 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:52:02,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274789662] [2022-11-18 19:52:02,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274789662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:02,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:02,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:52:02,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911763576] [2022-11-18 19:52:02,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:02,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:52:02,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:02,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:52:02,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:52:02,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 335 [2022-11-18 19:52:02,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 405 transitions, 1877 flow. Second operand has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:02,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:52:02,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 335 [2022-11-18 19:52:02,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:52:07,005 INFO L130 PetriNetUnfolder]: 2560/17726 cut-off events. [2022-11-18 19:52:07,006 INFO L131 PetriNetUnfolder]: For 7513/7549 co-relation queries the response was YES. [2022-11-18 19:52:07,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30921 conditions, 17726 events. 2560/17726 cut-off events. For 7513/7549 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 228980 event pairs, 1250 based on Foata normal form. 288/15804 useless extension candidates. Maximal degree in co-relation 23886. Up to 3840 conditions per place. [2022-11-18 19:52:07,178 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 23 selfloop transitions, 6 changer transitions 0/405 dead transitions. [2022-11-18 19:52:07,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 405 transitions, 1931 flow [2022-11-18 19:52:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:52:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:52:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1190 transitions. [2022-11-18 19:52:07,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8880597014925373 [2022-11-18 19:52:07,190 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1190 transitions. [2022-11-18 19:52:07,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1190 transitions. [2022-11-18 19:52:07,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:52:07,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1190 transitions. [2022-11-18 19:52:07,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.5) internal successors, (1190), 4 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:07,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:07,195 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:07,195 INFO L175 Difference]: Start difference. First operand has 409 places, 405 transitions, 1877 flow. Second operand 4 states and 1190 transitions. [2022-11-18 19:52:07,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 405 transitions, 1931 flow [2022-11-18 19:52:07,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 405 transitions, 1925 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:52:07,269 INFO L231 Difference]: Finished difference. Result has 409 places, 403 transitions, 1873 flow [2022-11-18 19:52:07,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1873, PETRI_PLACES=409, PETRI_TRANSITIONS=403} [2022-11-18 19:52:07,271 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 119 predicate places. [2022-11-18 19:52:07,271 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 403 transitions, 1873 flow [2022-11-18 19:52:07,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:07,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:52:07,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:07,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:07,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:52:07,476 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:52:07,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:07,476 INFO L85 PathProgramCache]: Analyzing trace with hash -995550503, now seen corresponding path program 2 times [2022-11-18 19:52:07,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:07,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691174757] [2022-11-18 19:52:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:07,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:07,496 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:52:07,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324020606] [2022-11-18 19:52:07,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:52:07,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:07,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:07,498 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:07,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 19:52:07,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:52:07,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:07,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:52:07,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:09,736 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= c_~L~0 .cse0)))) is different from true [2022-11-18 19:52:13,107 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= (+ c_thread1Thread1of1ForFork1_~i~0 1) .cse0) (<= .cse0 2147483647)))) is different from true [2022-11-18 19:52:15,150 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_thread1Thread1of1ForFork1_#t~post1| 1) .cse0)))) is different from true [2022-11-18 19:52:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 5 not checked. [2022-11-18 19:52:15,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 19:52:15,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:15,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691174757] [2022-11-18 19:52:15,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:52:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324020606] [2022-11-18 19:52:15,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324020606] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:15,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:52:15,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 19:52:15,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556269498] [2022-11-18 19:52:15,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:15,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:52:15,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:52:15,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=24, Unknown=3, NotChecked=30, Total=72 [2022-11-18 19:52:15,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 335 [2022-11-18 19:52:15,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 403 transitions, 1873 flow. Second operand has 9 states, 9 states have (on average 256.77777777777777) internal successors, (2311), 9 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:15,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:52:15,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 335 [2022-11-18 19:52:15,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:52:51,706 WARN L233 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 19 DAG size of output: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:53:13,456 INFO L130 PetriNetUnfolder]: 13310/48742 cut-off events. [2022-11-18 19:53:13,456 INFO L131 PetriNetUnfolder]: For 34543/34917 co-relation queries the response was YES. [2022-11-18 19:53:13,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103452 conditions, 48742 events. 13310/48742 cut-off events. For 34543/34917 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 606413 event pairs, 7268 based on Foata normal form. 696/43654 useless extension candidates. Maximal degree in co-relation 78885. Up to 13669 conditions per place. [2022-11-18 19:53:14,163 INFO L137 encePairwiseOnDemand]: 322/335 looper letters, 125 selfloop transitions, 25 changer transitions 3/478 dead transitions. [2022-11-18 19:53:14,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 478 transitions, 2424 flow [2022-11-18 19:53:14,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:53:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 19:53:14,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3142 transitions. [2022-11-18 19:53:14,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.781592039800995 [2022-11-18 19:53:14,182 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3142 transitions. [2022-11-18 19:53:14,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3142 transitions. [2022-11-18 19:53:14,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:14,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3142 transitions. [2022-11-18 19:53:14,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 261.8333333333333) internal successors, (3142), 12 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:14,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 335.0) internal successors, (4355), 13 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:14,206 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 335.0) internal successors, (4355), 13 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:14,206 INFO L175 Difference]: Start difference. First operand has 409 places, 403 transitions, 1873 flow. Second operand 12 states and 3142 transitions. [2022-11-18 19:53:14,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 478 transitions, 2424 flow [2022-11-18 19:53:14,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 478 transitions, 2412 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:14,718 INFO L231 Difference]: Finished difference. Result has 422 places, 418 transitions, 2033 flow [2022-11-18 19:53:14,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2033, PETRI_PLACES=422, PETRI_TRANSITIONS=418} [2022-11-18 19:53:14,720 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 132 predicate places. [2022-11-18 19:53:14,720 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 418 transitions, 2033 flow [2022-11-18 19:53:14,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 256.77777777777777) internal successors, (2311), 9 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:14,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:14,721 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:14,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:14,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 19:53:14,928 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:53:14,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:14,928 INFO L85 PathProgramCache]: Analyzing trace with hash 86050399, now seen corresponding path program 1 times [2022-11-18 19:53:14,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:14,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619140924] [2022-11-18 19:53:14,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:14,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:14,948 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:14,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107790716] [2022-11-18 19:53:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:14,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:14,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:14,950 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:14,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 19:53:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:15,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:53:15,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:15,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:15,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:15,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619140924] [2022-11-18 19:53:15,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:15,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107790716] [2022-11-18 19:53:15,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107790716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:15,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:15,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-18 19:53:15,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170256298] [2022-11-18 19:53:15,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:15,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:53:15,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:15,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:53:15,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:53:15,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 335 [2022-11-18 19:53:15,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 418 transitions, 2033 flow. Second operand has 12 states, 12 states have (on average 265.25) internal successors, (3183), 12 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:15,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:15,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 335 [2022-11-18 19:53:15,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:24,714 INFO L130 PetriNetUnfolder]: 3878/30200 cut-off events. [2022-11-18 19:53:24,714 INFO L131 PetriNetUnfolder]: For 16075/16255 co-relation queries the response was YES. [2022-11-18 19:53:24,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56389 conditions, 30200 events. 3878/30200 cut-off events. For 16075/16255 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 426838 event pairs, 2054 based on Foata normal form. 200/27400 useless extension candidates. Maximal degree in co-relation 43673. Up to 7393 conditions per place. [2022-11-18 19:53:25,052 INFO L137 encePairwiseOnDemand]: 320/335 looper letters, 85 selfloop transitions, 19 changer transitions 0/464 dead transitions. [2022-11-18 19:53:25,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 464 transitions, 2385 flow [2022-11-18 19:53:25,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:53:25,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 19:53:25,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4554 transitions. [2022-11-18 19:53:25,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7996488147497806 [2022-11-18 19:53:25,057 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4554 transitions. [2022-11-18 19:53:25,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4554 transitions. [2022-11-18 19:53:25,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:25,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4554 transitions. [2022-11-18 19:53:25,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 267.88235294117646) internal successors, (4554), 17 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:25,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 335.0) internal successors, (6030), 18 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:25,072 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 335.0) internal successors, (6030), 18 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:25,072 INFO L175 Difference]: Start difference. First operand has 422 places, 418 transitions, 2033 flow. Second operand 17 states and 4554 transitions. [2022-11-18 19:53:25,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 464 transitions, 2385 flow [2022-11-18 19:53:25,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 464 transitions, 2355 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-11-18 19:53:25,236 INFO L231 Difference]: Finished difference. Result has 442 places, 429 transitions, 2118 flow [2022-11-18 19:53:25,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2118, PETRI_PLACES=442, PETRI_TRANSITIONS=429} [2022-11-18 19:53:25,237 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 152 predicate places. [2022-11-18 19:53:25,237 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 429 transitions, 2118 flow [2022-11-18 19:53:25,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 265.25) internal successors, (3183), 12 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:25,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:25,238 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:25,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:25,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 19:53:25,444 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:53:25,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:25,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1145269542, now seen corresponding path program 1 times [2022-11-18 19:53:25,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:25,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998275209] [2022-11-18 19:53:25,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:25,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:25,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:25,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200865547] [2022-11-18 19:53:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:25,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:25,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:25,470 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:25,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 19:53:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:25,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:53:25,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:53:25,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:25,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998275209] [2022-11-18 19:53:25,815 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:25,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200865547] [2022-11-18 19:53:25,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200865547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:25,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:25,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:53:25,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100962050] [2022-11-18 19:53:25,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:25,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:53:25,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:53:25,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:53:25,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 335 [2022-11-18 19:53:25,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 429 transitions, 2118 flow. Second operand has 5 states, 5 states have (on average 285.4) internal successors, (1427), 5 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:25,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:25,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 335 [2022-11-18 19:53:25,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:29,642 INFO L130 PetriNetUnfolder]: 707/14456 cut-off events. [2022-11-18 19:53:29,642 INFO L131 PetriNetUnfolder]: For 9320/9416 co-relation queries the response was YES. [2022-11-18 19:53:29,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25583 conditions, 14456 events. 707/14456 cut-off events. For 9320/9416 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 170954 event pairs, 297 based on Foata normal form. 56/13372 useless extension candidates. Maximal degree in co-relation 24196. Up to 1710 conditions per place. [2022-11-18 19:53:29,794 INFO L137 encePairwiseOnDemand]: 327/335 looper letters, 46 selfloop transitions, 7 changer transitions 0/439 dead transitions. [2022-11-18 19:53:29,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 439 transitions, 2273 flow [2022-11-18 19:53:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:53:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:53:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1729 transitions. [2022-11-18 19:53:29,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601990049751244 [2022-11-18 19:53:29,797 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1729 transitions. [2022-11-18 19:53:29,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1729 transitions. [2022-11-18 19:53:29,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:29,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1729 transitions. [2022-11-18 19:53:29,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.1666666666667) internal successors, (1729), 6 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:29,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:29,804 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:29,804 INFO L175 Difference]: Start difference. First operand has 442 places, 429 transitions, 2118 flow. Second operand 6 states and 1729 transitions. [2022-11-18 19:53:29,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 439 transitions, 2273 flow [2022-11-18 19:53:29,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 439 transitions, 2250 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-18 19:53:29,905 INFO L231 Difference]: Finished difference. Result has 443 places, 430 transitions, 2128 flow [2022-11-18 19:53:29,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2128, PETRI_PLACES=443, PETRI_TRANSITIONS=430} [2022-11-18 19:53:29,906 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 153 predicate places. [2022-11-18 19:53:29,906 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 430 transitions, 2128 flow [2022-11-18 19:53:29,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.4) internal successors, (1427), 5 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:29,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:29,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:29,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:30,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 19:53:30,114 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:53:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:30,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1827500097, now seen corresponding path program 1 times [2022-11-18 19:53:30,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:30,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643821032] [2022-11-18 19:53:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:30,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:30,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:30,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767971764] [2022-11-18 19:53:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:30,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:30,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:30,141 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:30,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 19:53:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:53:30,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:30,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:30,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:30,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643821032] [2022-11-18 19:53:30,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:30,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767971764] [2022-11-18 19:53:30,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767971764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:30,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:30,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:53:30,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649425439] [2022-11-18 19:53:30,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:30,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:53:30,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:30,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:53:30,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:30,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 335 [2022-11-18 19:53:30,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 430 transitions, 2128 flow. Second operand has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:30,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:30,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 335 [2022-11-18 19:53:30,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:34,696 INFO L130 PetriNetUnfolder]: 1527/15310 cut-off events. [2022-11-18 19:53:34,696 INFO L131 PetriNetUnfolder]: For 10895/10991 co-relation queries the response was YES. [2022-11-18 19:53:34,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28403 conditions, 15310 events. 1527/15310 cut-off events. For 10895/10991 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 187303 event pairs, 572 based on Foata normal form. 224/14094 useless extension candidates. Maximal degree in co-relation 27055. Up to 2046 conditions per place. [2022-11-18 19:53:34,856 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 37 selfloop transitions, 5 changer transitions 0/440 dead transitions. [2022-11-18 19:53:34,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 440 transitions, 2232 flow [2022-11-18 19:53:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:53:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:53:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 923 transitions. [2022-11-18 19:53:34,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.918407960199005 [2022-11-18 19:53:34,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 923 transitions. [2022-11-18 19:53:34,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 923 transitions. [2022-11-18 19:53:34,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:34,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 923 transitions. [2022-11-18 19:53:34,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:34,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:34,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:34,862 INFO L175 Difference]: Start difference. First operand has 443 places, 430 transitions, 2128 flow. Second operand 3 states and 923 transitions. [2022-11-18 19:53:34,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 440 transitions, 2232 flow [2022-11-18 19:53:34,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 440 transitions, 2223 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:34,976 INFO L231 Difference]: Finished difference. Result has 443 places, 428 transitions, 2126 flow [2022-11-18 19:53:34,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2126, PETRI_PLACES=443, PETRI_TRANSITIONS=428} [2022-11-18 19:53:34,978 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 153 predicate places. [2022-11-18 19:53:34,978 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 428 transitions, 2126 flow [2022-11-18 19:53:34,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:34,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:34,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:34,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:35,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 19:53:35,185 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:53:35,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash 889358010, now seen corresponding path program 1 times [2022-11-18 19:53:35,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:35,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478405078] [2022-11-18 19:53:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:35,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:35,206 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:35,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982369409] [2022-11-18 19:53:35,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:35,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:35,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:35,208 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:35,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 19:53:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:35,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:35,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:53:35,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:53:35,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:35,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478405078] [2022-11-18 19:53:35,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:35,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982369409] [2022-11-18 19:53:35,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982369409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:35,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:35,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-18 19:53:35,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075907554] [2022-11-18 19:53:35,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:35,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:53:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:53:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:53:35,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-18 19:53:35,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 428 transitions, 2126 flow. Second operand has 10 states, 10 states have (on average 302.1) internal successors, (3021), 10 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:35,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-18 19:53:35,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:41,072 INFO L130 PetriNetUnfolder]: 1226/17475 cut-off events. [2022-11-18 19:53:41,072 INFO L131 PetriNetUnfolder]: For 20854/21330 co-relation queries the response was YES. [2022-11-18 19:53:41,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35829 conditions, 17475 events. 1226/17475 cut-off events. For 20854/21330 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 211776 event pairs, 70 based on Foata normal form. 204/16373 useless extension candidates. Maximal degree in co-relation 33715. Up to 1143 conditions per place. [2022-11-18 19:53:41,253 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 95 selfloop transitions, 31 changer transitions 0/514 dead transitions. [2022-11-18 19:53:41,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 514 transitions, 2887 flow [2022-11-18 19:53:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:53:41,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 19:53:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4259 transitions. [2022-11-18 19:53:41,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9081023454157783 [2022-11-18 19:53:41,257 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4259 transitions. [2022-11-18 19:53:41,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4259 transitions. [2022-11-18 19:53:41,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:41,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4259 transitions. [2022-11-18 19:53:41,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 304.2142857142857) internal successors, (4259), 14 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,270 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,271 INFO L175 Difference]: Start difference. First operand has 443 places, 428 transitions, 2126 flow. Second operand 14 states and 4259 transitions. [2022-11-18 19:53:41,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 514 transitions, 2887 flow [2022-11-18 19:53:41,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 514 transitions, 2873 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 19:53:41,408 INFO L231 Difference]: Finished difference. Result has 458 places, 445 transitions, 2315 flow [2022-11-18 19:53:41,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2315, PETRI_PLACES=458, PETRI_TRANSITIONS=445} [2022-11-18 19:53:41,409 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 168 predicate places. [2022-11-18 19:53:41,409 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 445 transitions, 2315 flow [2022-11-18 19:53:41,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 302.1) internal successors, (3021), 10 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:41,411 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:41,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:41,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:41,618 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:53:41,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:41,618 INFO L85 PathProgramCache]: Analyzing trace with hash -414003644, now seen corresponding path program 1 times [2022-11-18 19:53:41,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:41,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481325996] [2022-11-18 19:53:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:41,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:41,637 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:41,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491787042] [2022-11-18 19:53:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:41,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:41,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:41,640 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:41,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee5e5d15-3a5d-46d0-9033-91122179b532/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 19:53:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:41,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:53:41,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:41,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:41,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:41,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481325996] [2022-11-18 19:53:41,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:41,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491787042] [2022-11-18 19:53:41,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491787042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:41,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:41,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:41,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114857480] [2022-11-18 19:53:41,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:41,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:41,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:41,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:41,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:41,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 335 [2022-11-18 19:53:41,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 445 transitions, 2315 flow. Second operand has 4 states, 4 states have (on average 274.5) internal successors, (1098), 4 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:41,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 335 [2022-11-18 19:53:41,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand