./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/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_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/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_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- 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 21:02:05,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:02:05,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:02:05,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:02:05,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:02:05,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:02:05,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:02:05,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:02:05,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:02:05,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:02:05,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:02:05,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:02:05,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:02:05,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:02:05,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:02:05,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:02:05,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:02:05,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:02:05,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:02:05,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:02:05,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:02:05,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:02:05,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:02:05,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:02:05,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:02:05,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:02:05,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:02:05,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:02:05,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:02:05,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:02:05,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:02:05,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:02:05,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:02:05,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:02:05,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:02:05,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:02:05,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:02:05,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:02:05,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:02:05,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:02:05,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:02:05,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:02:05,836 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:02:05,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:02:05,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:02:05,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:02:05,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:02:05,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:02:05,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:02:05,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:02:05,839 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:02:05,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:02:05,840 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:02:05,840 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:02:05,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:02:05,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:02:05,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:02:05,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:02:05,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:02:05,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:02:05,842 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:02:05,842 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:02:05,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:02:05,842 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:02:05,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:02:05,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:02:05,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:02:05,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:02:05,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:02:05,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:02:05,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:02:05,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:02:05,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:02:05,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:02:05,844 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:02:05,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:02:05,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:02:05,845 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_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2022-11-18 21:02:06,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:02:06,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:02:06,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:02:06,212 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:02:06,212 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:02:06,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-18 21:02:06,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/data/8ad76378b/3af4616d09484f06a0f2542e65c65020/FLAGcf4d52d33 [2022-11-18 21:02:06,740 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:02:06,741 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-18 21:02:06,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/data/8ad76378b/3af4616d09484f06a0f2542e65c65020/FLAGcf4d52d33 [2022-11-18 21:02:06,765 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/data/8ad76378b/3af4616d09484f06a0f2542e65c65020 [2022-11-18 21:02:06,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:02:06,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:02:06,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:02:06,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:02:06,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:02:06,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:06" (1/1) ... [2022-11-18 21:02:06,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475f1d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:06, skipping insertion in model container [2022-11-18 21:02:06,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:06" (1/1) ... [2022-11-18 21:02:06,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:02:06,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:02:07,045 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_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-18 21:02:07,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:02:07,060 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:02:07,106 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_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-18 21:02:07,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:02:07,141 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:02:07,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07 WrapperNode [2022-11-18 21:02:07,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:02:07,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:02:07,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:02:07,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:02:07,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,243 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 706 [2022-11-18 21:02:07,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:02:07,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:02:07,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:02:07,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:02:07,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:02:07,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:02:07,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:02:07,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:02:07,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:02:07,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:07,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:02:07,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:02:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:02:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:02:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:02:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:02:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:02:07,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:02:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:02:07,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:02:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:02:07,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:02:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:02:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:02:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:02:07,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:02:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:02:07,439 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 21:02:07,575 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:02:07,577 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:02:08,746 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:02:08,767 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:02:08,768 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 21:02:08,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:08 BoogieIcfgContainer [2022-11-18 21:02:08,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:02:08,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:02:08,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:02:08,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:02:08,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:02:06" (1/3) ... [2022-11-18 21:02:08,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf14705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:08, skipping insertion in model container [2022-11-18 21:02:08,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (2/3) ... [2022-11-18 21:02:08,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf14705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:08, skipping insertion in model container [2022-11-18 21:02:08,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:08" (3/3) ... [2022-11-18 21:02:08,785 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-11-18 21:02:08,795 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:02:08,805 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:02:08,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-11-18 21:02:08,806 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:02:09,079 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 21:02:09,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 889 places, 970 transitions, 1964 flow [2022-11-18 21:02:09,719 INFO L130 PetriNetUnfolder]: 91/967 cut-off events. [2022-11-18 21:02:09,720 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:02:09,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 967 events. 91/967 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4103 event pairs, 0 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 730. Up to 2 conditions per place. [2022-11-18 21:02:09,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 889 places, 970 transitions, 1964 flow [2022-11-18 21:02:09,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 866 places, 946 transitions, 1907 flow [2022-11-18 21:02:09,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:02:09,816 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;@5456f067, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:02:09,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2022-11-18 21:02:09,832 INFO L130 PetriNetUnfolder]: 3/118 cut-off events. [2022-11-18 21:02:09,832 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:02:09,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:09,833 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] [2022-11-18 21:02:09,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:09,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1045458, now seen corresponding path program 1 times [2022-11-18 21:02:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:09,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454511915] [2022-11-18 21:02:09,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:09,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:10,308 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 21:02:10,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:10,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454511915] [2022-11-18 21:02:10,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454511915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:10,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:10,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:02:10,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42409947] [2022-11-18 21:02:10,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:10,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:10,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:10,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:10,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:10,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-18 21:02:10,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 866 places, 946 transitions, 1907 flow. Second operand has 4 states, 4 states have (on average 891.5) internal successors, (3566), 4 states have internal predecessors, (3566), 0 states have call successors, (0), 0 states 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 21:02:10,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:10,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-18 21:02:10,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:11,457 INFO L130 PetriNetUnfolder]: 107/1669 cut-off events. [2022-11-18 21:02:11,458 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-18 21:02:11,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 1669 events. 107/1669 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10567 event pairs, 0 based on Foata normal form. 104/1497 useless extension candidates. Maximal degree in co-relation 1267. Up to 44 conditions per place. [2022-11-18 21:02:11,515 INFO L137 encePairwiseOnDemand]: 914/970 looper letters, 58 selfloop transitions, 14 changer transitions 6/941 dead transitions. [2022-11-18 21:02:11,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 941 transitions, 2056 flow [2022-11-18 21:02:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:02:11,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:02:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4594 transitions. [2022-11-18 21:02:11,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9472164948453609 [2022-11-18 21:02:11,546 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4594 transitions. [2022-11-18 21:02:11,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4594 transitions. [2022-11-18 21:02:11,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:11,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4594 transitions. [2022-11-18 21:02:11,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 918.8) internal successors, (4594), 5 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states 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 21:02:11,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states 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 21:02:11,597 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states 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 21:02:11,599 INFO L175 Difference]: Start difference. First operand has 866 places, 946 transitions, 1907 flow. Second operand 5 states and 4594 transitions. [2022-11-18 21:02:11,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 941 transitions, 2056 flow [2022-11-18 21:02:11,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 865 places, 941 transitions, 2038 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:02:11,625 INFO L231 Difference]: Finished difference. Result has 868 places, 915 transitions, 1918 flow [2022-11-18 21:02:11,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=861, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=896, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1918, PETRI_PLACES=868, PETRI_TRANSITIONS=915} [2022-11-18 21:02:11,631 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 2 predicate places. [2022-11-18 21:02:11,632 INFO L495 AbstractCegarLoop]: Abstraction has has 868 places, 915 transitions, 1918 flow [2022-11-18 21:02:11,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 891.5) internal successors, (3566), 4 states have internal predecessors, (3566), 0 states have call successors, (0), 0 states 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 21:02:11,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:11,635 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] [2022-11-18 21:02:11,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:02:11,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:11,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash -184970811, now seen corresponding path program 1 times [2022-11-18 21:02:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:11,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450511382] [2022-11-18 21:02:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:11,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:11,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:11,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450511382] [2022-11-18 21:02:11,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450511382] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:11,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826545050] [2022-11-18 21:02:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:11,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:11,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:11,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:12,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:02:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:12,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:02:12,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:12,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:12,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826545050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:12,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:02:12,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:02:12,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351362215] [2022-11-18 21:02:12,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:12,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:02:12,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:12,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:02:12,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:02:12,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-18 21:02:12,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 868 places, 915 transitions, 1918 flow. Second operand has 12 states, 12 states have (on average 892.6666666666666) internal successors, (10712), 12 states have internal predecessors, (10712), 0 states have call successors, (0), 0 states 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 21:02:12,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:12,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-18 21:02:12,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:14,882 INFO L130 PetriNetUnfolder]: 266/3946 cut-off events. [2022-11-18 21:02:14,883 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-11-18 21:02:14,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4224 conditions, 3946 events. 266/3946 cut-off events. For 53/63 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 34022 event pairs, 0 based on Foata normal form. 9/3295 useless extension candidates. Maximal degree in co-relation 2984. Up to 35 conditions per place. [2022-11-18 21:02:15,035 INFO L137 encePairwiseOnDemand]: 947/970 looper letters, 109 selfloop transitions, 62 changer transitions 0/1034 dead transitions. [2022-11-18 21:02:15,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 879 places, 1034 transitions, 2600 flow [2022-11-18 21:02:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:02:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:02:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 16200 transitions. [2022-11-18 21:02:15,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9278350515463918 [2022-11-18 21:02:15,068 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 16200 transitions. [2022-11-18 21:02:15,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 16200 transitions. [2022-11-18 21:02:15,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:15,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 16200 transitions. [2022-11-18 21:02:15,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 900.0) internal successors, (16200), 18 states have internal predecessors, (16200), 0 states have call successors, (0), 0 states 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 21:02:15,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 970.0) internal successors, (18430), 19 states have internal predecessors, (18430), 0 states have call successors, (0), 0 states 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 21:02:15,174 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 970.0) internal successors, (18430), 19 states have internal predecessors, (18430), 0 states have call successors, (0), 0 states 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 21:02:15,174 INFO L175 Difference]: Start difference. First operand has 868 places, 915 transitions, 1918 flow. Second operand 18 states and 16200 transitions. [2022-11-18 21:02:15,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 879 places, 1034 transitions, 2600 flow [2022-11-18 21:02:15,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1034 transitions, 2592 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:02:15,195 INFO L231 Difference]: Finished difference. Result has 882 places, 957 transitions, 2280 flow [2022-11-18 21:02:15,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=861, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2280, PETRI_PLACES=882, PETRI_TRANSITIONS=957} [2022-11-18 21:02:15,197 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 16 predicate places. [2022-11-18 21:02:15,197 INFO L495 AbstractCegarLoop]: Abstraction has has 882 places, 957 transitions, 2280 flow [2022-11-18 21:02:15,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 892.6666666666666) internal successors, (10712), 12 states have internal predecessors, (10712), 0 states have call successors, (0), 0 states 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 21:02:15,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:15,201 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] [2022-11-18 21:02:15,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 21:02:15,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 21:02:15,406 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:15,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1439125716, now seen corresponding path program 1 times [2022-11-18 21:02:15,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:15,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709981634] [2022-11-18 21:02:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:15,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:15,565 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 21:02:15,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:15,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709981634] [2022-11-18 21:02:15,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709981634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:15,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623912720] [2022-11-18 21:02:15,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:15,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:15,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:15,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:15,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:02:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:15,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:02:15,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:15,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:15,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623912720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:15,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:15,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:02:15,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351829168] [2022-11-18 21:02:15,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:15,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:15,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:15,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:15,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:15,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-18 21:02:15,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 882 places, 957 transitions, 2280 flow. Second operand has 6 states, 6 states have (on average 892.3333333333334) internal successors, (5354), 6 states have internal predecessors, (5354), 0 states have call successors, (0), 0 states 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 21:02:15,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:15,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-18 21:02:15,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:17,768 INFO L130 PetriNetUnfolder]: 266/3934 cut-off events. [2022-11-18 21:02:17,768 INFO L131 PetriNetUnfolder]: For 205/215 co-relation queries the response was YES. [2022-11-18 21:02:17,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4280 conditions, 3934 events. 266/3934 cut-off events. For 205/215 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 33923 event pairs, 0 based on Foata normal form. 12/3286 useless extension candidates. Maximal degree in co-relation 3389. Up to 68 conditions per place. [2022-11-18 21:02:17,912 INFO L137 encePairwiseOnDemand]: 953/970 looper letters, 59 selfloop transitions, 43 changer transitions 0/965 dead transitions. [2022-11-18 21:02:17,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 965 transitions, 2455 flow [2022-11-18 21:02:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:02:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6302 transitions. [2022-11-18 21:02:17,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9281296023564065 [2022-11-18 21:02:17,925 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6302 transitions. [2022-11-18 21:02:17,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6302 transitions. [2022-11-18 21:02:17,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:17,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6302 transitions. [2022-11-18 21:02:17,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 900.2857142857143) internal successors, (6302), 7 states have internal predecessors, (6302), 0 states have call successors, (0), 0 states 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 21:02:17,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:17,955 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:17,955 INFO L175 Difference]: Start difference. First operand has 882 places, 957 transitions, 2280 flow. Second operand 7 states and 6302 transitions. [2022-11-18 21:02:17,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 965 transitions, 2455 flow [2022-11-18 21:02:17,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 965 transitions, 2339 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 21:02:17,977 INFO L231 Difference]: Finished difference. Result has 876 places, 945 transitions, 2169 flow [2022-11-18 21:02:17,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=902, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2169, PETRI_PLACES=876, PETRI_TRANSITIONS=945} [2022-11-18 21:02:17,980 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 10 predicate places. [2022-11-18 21:02:17,980 INFO L495 AbstractCegarLoop]: Abstraction has has 876 places, 945 transitions, 2169 flow [2022-11-18 21:02:17,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 892.3333333333334) internal successors, (5354), 6 states have internal predecessors, (5354), 0 states have call successors, (0), 0 states 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 21:02:17,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:17,982 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 21:02:17,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 21:02:18,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:18,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1976264290, now seen corresponding path program 2 times [2022-11-18 21:02:18,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:18,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907340701] [2022-11-18 21:02:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:18,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:18,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:18,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907340701] [2022-11-18 21:02:18,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907340701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:18,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526795872] [2022-11-18 21:02:18,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:18,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:18,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:18,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:18,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:02:18,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:02:18,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:18,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:02:18,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 21:02:18,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 21:02:19,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526795872] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:19,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:02:19,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-18 21:02:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936347263] [2022-11-18 21:02:19,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:19,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:02:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:02:19,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:02:19,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-18 21:02:19,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 945 transitions, 2169 flow. Second operand has 18 states, 18 states have (on average 881.8333333333334) internal successors, (15873), 18 states have internal predecessors, (15873), 0 states have call successors, (0), 0 states 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 21:02:19,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:19,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-18 21:02:19,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:21,950 INFO L130 PetriNetUnfolder]: 319/4672 cut-off events. [2022-11-18 21:02:21,950 INFO L131 PetriNetUnfolder]: For 189/201 co-relation queries the response was YES. [2022-11-18 21:02:22,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4672 events. 319/4672 cut-off events. For 189/201 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 42129 event pairs, 0 based on Foata normal form. 3/3883 useless extension candidates. Maximal degree in co-relation 3719. Up to 22 conditions per place. [2022-11-18 21:02:22,132 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 127 selfloop transitions, 67 changer transitions 0/1045 dead transitions. [2022-11-18 21:02:22,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 892 places, 1045 transitions, 2804 flow [2022-11-18 21:02:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 21:02:22,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 21:02:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 17757 transitions. [2022-11-18 21:02:22,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153092783505155 [2022-11-18 21:02:22,171 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 17757 transitions. [2022-11-18 21:02:22,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 17757 transitions. [2022-11-18 21:02:22,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:22,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 17757 transitions. [2022-11-18 21:02:22,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 887.85) internal successors, (17757), 20 states have internal predecessors, (17757), 0 states have call successors, (0), 0 states 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 21:02:22,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 970.0) internal successors, (20370), 21 states have internal predecessors, (20370), 0 states have call successors, (0), 0 states 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 21:02:22,265 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 970.0) internal successors, (20370), 21 states have internal predecessors, (20370), 0 states have call successors, (0), 0 states 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 21:02:22,265 INFO L175 Difference]: Start difference. First operand has 876 places, 945 transitions, 2169 flow. Second operand 20 states and 17757 transitions. [2022-11-18 21:02:22,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 892 places, 1045 transitions, 2804 flow [2022-11-18 21:02:22,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 883 places, 1045 transitions, 2721 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 21:02:22,294 INFO L231 Difference]: Finished difference. Result has 884 places, 950 transitions, 2243 flow [2022-11-18 21:02:22,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=864, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=880, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2243, PETRI_PLACES=884, PETRI_TRANSITIONS=950} [2022-11-18 21:02:22,298 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 18 predicate places. [2022-11-18 21:02:22,298 INFO L495 AbstractCegarLoop]: Abstraction has has 884 places, 950 transitions, 2243 flow [2022-11-18 21:02:22,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 881.8333333333334) internal successors, (15873), 18 states have internal predecessors, (15873), 0 states have call successors, (0), 0 states 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 21:02:22,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:22,303 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:22,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:22,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:22,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:22,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:22,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1358411985, now seen corresponding path program 1 times [2022-11-18 21:02:22,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:22,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387588435] [2022-11-18 21:02:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:22,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:22,700 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 21:02:22,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:22,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387588435] [2022-11-18 21:02:22,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387588435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:22,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:22,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:02:22,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905001118] [2022-11-18 21:02:22,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:22,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:02:22,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:22,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:02:22,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:02:22,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 893 out of 970 [2022-11-18 21:02:22,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 884 places, 950 transitions, 2243 flow. Second operand has 5 states, 5 states have (on average 897.4) internal successors, (4487), 5 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states 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 21:02:22,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:22,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 893 of 970 [2022-11-18 21:02:22,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:24,619 INFO L130 PetriNetUnfolder]: 266/3937 cut-off events. [2022-11-18 21:02:24,620 INFO L131 PetriNetUnfolder]: For 245/255 co-relation queries the response was YES. [2022-11-18 21:02:24,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4278 conditions, 3937 events. 266/3937 cut-off events. For 245/255 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 33798 event pairs, 0 based on Foata normal form. 3/3295 useless extension candidates. Maximal degree in co-relation 744. Up to 113 conditions per place. [2022-11-18 21:02:24,867 INFO L137 encePairwiseOnDemand]: 955/970 looper letters, 59 selfloop transitions, 20 changer transitions 0/954 dead transitions. [2022-11-18 21:02:24,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 954 transitions, 2405 flow [2022-11-18 21:02:24,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:02:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:02:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4518 transitions. [2022-11-18 21:02:24,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9315463917525774 [2022-11-18 21:02:24,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4518 transitions. [2022-11-18 21:02:24,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4518 transitions. [2022-11-18 21:02:24,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:24,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4518 transitions. [2022-11-18 21:02:24,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 903.6) internal successors, (4518), 5 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states 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 21:02:24,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states 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 21:02:24,900 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states 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 21:02:24,901 INFO L175 Difference]: Start difference. First operand has 884 places, 950 transitions, 2243 flow. Second operand 5 states and 4518 transitions. [2022-11-18 21:02:24,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 954 transitions, 2405 flow [2022-11-18 21:02:24,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 954 transitions, 2261 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-18 21:02:24,924 INFO L231 Difference]: Finished difference. Result has 874 places, 948 transitions, 2137 flow [2022-11-18 21:02:24,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2137, PETRI_PLACES=874, PETRI_TRANSITIONS=948} [2022-11-18 21:02:24,929 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 8 predicate places. [2022-11-18 21:02:24,929 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 948 transitions, 2137 flow [2022-11-18 21:02:24,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 897.4) internal successors, (4487), 5 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states 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 21:02:24,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:24,931 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:24,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:02:24,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:24,932 INFO L85 PathProgramCache]: Analyzing trace with hash -880091052, now seen corresponding path program 1 times [2022-11-18 21:02:24,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:24,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296766286] [2022-11-18 21:02:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:02:25,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:25,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296766286] [2022-11-18 21:02:25,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296766286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:25,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241818978] [2022-11-18 21:02:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:25,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:25,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:25,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:25,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:02:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:02:25,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:02:25,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:02:25,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241818978] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:25,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:02:25,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 21:02:25,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972675225] [2022-11-18 21:02:25,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:25,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 21:02:25,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:25,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 21:02:25,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:02:25,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-18 21:02:25,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 948 transitions, 2137 flow. Second operand has 15 states, 15 states have (on average 882.4) internal successors, (13236), 15 states have internal predecessors, (13236), 0 states have call successors, (0), 0 states 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 21:02:25,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:25,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-18 21:02:25,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:26,892 INFO L130 PetriNetUnfolder]: 160/2467 cut-off events. [2022-11-18 21:02:26,893 INFO L131 PetriNetUnfolder]: For 73/79 co-relation queries the response was YES. [2022-11-18 21:02:26,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2777 conditions, 2467 events. 160/2467 cut-off events. For 73/79 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 17976 event pairs, 0 based on Foata normal form. 6/2086 useless extension candidates. Maximal degree in co-relation 2270. Up to 57 conditions per place. [2022-11-18 21:02:26,955 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 74 selfloop transitions, 46 changer transitions 0/971 dead transitions. [2022-11-18 21:02:26,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 971 transitions, 2433 flow [2022-11-18 21:02:26,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:02:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:02:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 9756 transitions. [2022-11-18 21:02:26,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9143392689784442 [2022-11-18 21:02:26,971 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 9756 transitions. [2022-11-18 21:02:26,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 9756 transitions. [2022-11-18 21:02:26,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:26,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 9756 transitions. [2022-11-18 21:02:26,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 886.9090909090909) internal successors, (9756), 11 states have internal predecessors, (9756), 0 states have call successors, (0), 0 states 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 21:02:27,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 970.0) internal successors, (11640), 12 states have internal predecessors, (11640), 0 states have call successors, (0), 0 states 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 21:02:27,006 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 970.0) internal successors, (11640), 12 states have internal predecessors, (11640), 0 states have call successors, (0), 0 states 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 21:02:27,006 INFO L175 Difference]: Start difference. First operand has 874 places, 948 transitions, 2137 flow. Second operand 11 states and 9756 transitions. [2022-11-18 21:02:27,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 971 transitions, 2433 flow [2022-11-18 21:02:27,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 971 transitions, 2401 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:02:27,023 INFO L231 Difference]: Finished difference. Result has 883 places, 947 transitions, 2250 flow [2022-11-18 21:02:27,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=898, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2250, PETRI_PLACES=883, PETRI_TRANSITIONS=947} [2022-11-18 21:02:27,026 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 17 predicate places. [2022-11-18 21:02:27,026 INFO L495 AbstractCegarLoop]: Abstraction has has 883 places, 947 transitions, 2250 flow [2022-11-18 21:02:27,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 882.4) internal successors, (13236), 15 states have internal predecessors, (13236), 0 states have call successors, (0), 0 states 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 21:02:27,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:27,031 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:27,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:27,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 21:02:27,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:27,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:27,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1377829278, now seen corresponding path program 2 times [2022-11-18 21:02:27,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:27,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946950081] [2022-11-18 21:02:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:27,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 21:02:27,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:27,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946950081] [2022-11-18 21:02:27,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946950081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:27,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834281993] [2022-11-18 21:02:27,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:27,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:27,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:27,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:27,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:02:27,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:02:27,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:27,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:02:27,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:28,234 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 21:02:28,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:28,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834281993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:28,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:28,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-18 21:02:28,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457493302] [2022-11-18 21:02:28,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:28,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:28,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:28,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:28,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:02:28,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:02:28,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 883 places, 947 transitions, 2250 flow. Second operand has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states 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 21:02:28,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:28,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:02:28,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:32,811 INFO L130 PetriNetUnfolder]: 1333/11665 cut-off events. [2022-11-18 21:02:32,811 INFO L131 PetriNetUnfolder]: For 158/164 co-relation queries the response was YES. [2022-11-18 21:02:33,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13871 conditions, 11665 events. 1333/11665 cut-off events. For 158/164 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 140016 event pairs, 216 based on Foata normal form. 0/9652 useless extension candidates. Maximal degree in co-relation 4455. Up to 492 conditions per place. [2022-11-18 21:02:33,116 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 61 selfloop transitions, 7 changer transitions 0/964 dead transitions. [2022-11-18 21:02:33,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 964 transitions, 2433 flow [2022-11-18 21:02:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:33,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:02:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6229 transitions. [2022-11-18 21:02:33,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9173784977908689 [2022-11-18 21:02:33,127 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6229 transitions. [2022-11-18 21:02:33,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6229 transitions. [2022-11-18 21:02:33,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:33,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6229 transitions. [2022-11-18 21:02:33,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.8571428571429) internal successors, (6229), 7 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states 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 21:02:33,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:33,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:33,156 INFO L175 Difference]: Start difference. First operand has 883 places, 947 transitions, 2250 flow. Second operand 7 states and 6229 transitions. [2022-11-18 21:02:33,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 964 transitions, 2433 flow [2022-11-18 21:02:33,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 879 places, 964 transitions, 2362 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-18 21:02:33,179 INFO L231 Difference]: Finished difference. Result has 879 places, 946 transitions, 2191 flow [2022-11-18 21:02:33,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=939, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2191, PETRI_PLACES=879, PETRI_TRANSITIONS=946} [2022-11-18 21:02:33,181 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 13 predicate places. [2022-11-18 21:02:33,181 INFO L495 AbstractCegarLoop]: Abstraction has has 879 places, 946 transitions, 2191 flow [2022-11-18 21:02:33,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states 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 21:02:33,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:33,184 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:33,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 21:02:33,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:33,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:33,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:33,391 INFO L85 PathProgramCache]: Analyzing trace with hash -236962919, now seen corresponding path program 1 times [2022-11-18 21:02:33,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:33,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936351054] [2022-11-18 21:02:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:33,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 21:02:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:33,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936351054] [2022-11-18 21:02:33,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936351054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:33,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:33,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:02:33,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322444044] [2022-11-18 21:02:33,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:33,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:33,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:33,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:33,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:33,696 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:02:33,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 879 places, 946 transitions, 2191 flow. Second operand has 4 states, 4 states have (on average 881.75) internal successors, (3527), 4 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states 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 21:02:33,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:33,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:02:33,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:37,435 INFO L130 PetriNetUnfolder]: 961/9898 cut-off events. [2022-11-18 21:02:37,436 INFO L131 PetriNetUnfolder]: For 145/151 co-relation queries the response was YES. [2022-11-18 21:02:37,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11702 conditions, 9898 events. 961/9898 cut-off events. For 145/151 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 116264 event pairs, 180 based on Foata normal form. 18/8257 useless extension candidates. Maximal degree in co-relation 6638. Up to 490 conditions per place. [2022-11-18 21:02:37,952 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 64 selfloop transitions, 8 changer transitions 0/968 dead transitions. [2022-11-18 21:02:37,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 880 places, 968 transitions, 2385 flow [2022-11-18 21:02:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:02:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:02:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3596 transitions. [2022-11-18 21:02:37,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9268041237113402 [2022-11-18 21:02:37,956 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3596 transitions. [2022-11-18 21:02:37,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3596 transitions. [2022-11-18 21:02:37,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:37,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3596 transitions. [2022-11-18 21:02:37,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 899.0) internal successors, (3596), 4 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states 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 21:02:37,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states 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 21:02:37,966 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states 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 21:02:37,967 INFO L175 Difference]: Start difference. First operand has 879 places, 946 transitions, 2191 flow. Second operand 4 states and 3596 transitions. [2022-11-18 21:02:37,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 880 places, 968 transitions, 2385 flow [2022-11-18 21:02:37,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 968 transitions, 2375 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:02:37,984 INFO L231 Difference]: Finished difference. Result has 879 places, 948 transitions, 2227 flow [2022-11-18 21:02:37,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=936, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2227, PETRI_PLACES=879, PETRI_TRANSITIONS=948} [2022-11-18 21:02:37,986 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 13 predicate places. [2022-11-18 21:02:37,987 INFO L495 AbstractCegarLoop]: Abstraction has has 879 places, 948 transitions, 2227 flow [2022-11-18 21:02:37,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 881.75) internal successors, (3527), 4 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states 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 21:02:37,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:37,988 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:37,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:02:37,988 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:37,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:37,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2005436054, now seen corresponding path program 1 times [2022-11-18 21:02:37,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:37,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854389035] [2022-11-18 21:02:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:37,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 21:02:38,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:38,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854389035] [2022-11-18 21:02:38,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854389035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:38,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195101230] [2022-11-18 21:02:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:38,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:38,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:38,313 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:38,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:02:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:38,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:02:38,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 21:02:38,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 21:02:38,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195101230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:38,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:02:38,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-18 21:02:38,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585622834] [2022-11-18 21:02:38,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:38,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 21:02:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:38,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 21:02:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:02:38,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-18 21:02:38,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 879 places, 948 transitions, 2227 flow. Second operand has 22 states, 22 states have (on average 882.3181818181819) internal successors, (19411), 22 states have internal predecessors, (19411), 0 states have call successors, (0), 0 states 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 21:02:38,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:38,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-18 21:02:38,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:40,100 INFO L130 PetriNetUnfolder]: 52/1117 cut-off events. [2022-11-18 21:02:40,100 INFO L131 PetriNetUnfolder]: For 121/131 co-relation queries the response was YES. [2022-11-18 21:02:40,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 1117 events. 52/1117 cut-off events. For 121/131 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5091 event pairs, 0 based on Foata normal form. 6/988 useless extension candidates. Maximal degree in co-relation 1291. Up to 33 conditions per place. [2022-11-18 21:02:40,125 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 83 selfloop transitions, 51 changer transitions 0/986 dead transitions. [2022-11-18 21:02:40,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 986 transitions, 2600 flow [2022-11-18 21:02:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:02:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 21:02:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 15066 transitions. [2022-11-18 21:02:40,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9136446331109763 [2022-11-18 21:02:40,135 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 15066 transitions. [2022-11-18 21:02:40,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 15066 transitions. [2022-11-18 21:02:40,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:40,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 15066 transitions. [2022-11-18 21:02:40,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 886.2352941176471) internal successors, (15066), 17 states have internal predecessors, (15066), 0 states have call successors, (0), 0 states 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 21:02:40,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 970.0) internal successors, (17460), 18 states have internal predecessors, (17460), 0 states have call successors, (0), 0 states 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 21:02:40,173 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 970.0) internal successors, (17460), 18 states have internal predecessors, (17460), 0 states have call successors, (0), 0 states 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 21:02:40,173 INFO L175 Difference]: Start difference. First operand has 879 places, 948 transitions, 2227 flow. Second operand 17 states and 15066 transitions. [2022-11-18 21:02:40,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 986 transitions, 2600 flow [2022-11-18 21:02:40,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 895 places, 986 transitions, 2600 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:02:40,193 INFO L231 Difference]: Finished difference. Result has 897 places, 944 transitions, 2332 flow [2022-11-18 21:02:40,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=879, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=893, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2332, PETRI_PLACES=897, PETRI_TRANSITIONS=944} [2022-11-18 21:02:40,195 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 31 predicate places. [2022-11-18 21:02:40,196 INFO L495 AbstractCegarLoop]: Abstraction has has 897 places, 944 transitions, 2332 flow [2022-11-18 21:02:40,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 882.3181818181819) internal successors, (19411), 22 states have internal predecessors, (19411), 0 states have call successors, (0), 0 states 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 21:02:40,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:40,199 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:40,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:40,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d35465c1-efbf-4edc-ba3a-0d6e7b6035b9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:40,404 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:40,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1660263520, now seen corresponding path program 2 times [2022-11-18 21:02:40,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:40,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183497818] [2022-11-18 21:02:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:02:40,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:40,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183497818] [2022-11-18 21:02:40,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183497818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:40,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:40,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:02:40,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161306068] [2022-11-18 21:02:40,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:40,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:40,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:40,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:40,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:40,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:02:40,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 944 transitions, 2332 flow. Second operand has 6 states, 6 states have (on average 882.0) internal successors, (5292), 6 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states 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 21:02:40,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:40,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:02:40,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:42,692 INFO L130 PetriNetUnfolder]: 904/5188 cut-off events. [2022-11-18 21:02:42,692 INFO L131 PetriNetUnfolder]: For 617/1834 co-relation queries the response was YES. [2022-11-18 21:02:42,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6877 conditions, 5188 events. 904/5188 cut-off events. For 617/1834 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 53065 event pairs, 248 based on Foata normal form. 0/4129 useless extension candidates. Maximal degree in co-relation 6369. Up to 491 conditions per place. [2022-11-18 21:02:42,815 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 59 selfloop transitions, 7 changer transitions 0/959 dead transitions. [2022-11-18 21:02:42,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 902 places, 959 transitions, 2505 flow [2022-11-18 21:02:42,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:02:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6227 transitions. [2022-11-18 21:02:42,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9170839469808542 [2022-11-18 21:02:42,822 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6227 transitions. [2022-11-18 21:02:42,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6227 transitions. [2022-11-18 21:02:42,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:42,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6227 transitions. [2022-11-18 21:02:42,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.5714285714286) internal successors, (6227), 7 states have internal predecessors, (6227), 0 states have call successors, (0), 0 states 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 21:02:42,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:42,838 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:42,838 INFO L175 Difference]: Start difference. First operand has 897 places, 944 transitions, 2332 flow. Second operand 7 states and 6227 transitions. [2022-11-18 21:02:42,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 902 places, 959 transitions, 2505 flow [2022-11-18 21:02:42,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 886 places, 959 transitions, 2403 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-18 21:02:42,855 INFO L231 Difference]: Finished difference. Result has 886 places, 943 transitions, 2242 flow [2022-11-18 21:02:42,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=936, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2242, PETRI_PLACES=886, PETRI_TRANSITIONS=943} [2022-11-18 21:02:42,857 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 20 predicate places. [2022-11-18 21:02:42,858 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 943 transitions, 2242 flow [2022-11-18 21:02:42,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 882.0) internal successors, (5292), 6 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states 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 21:02:42,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:42,859 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:42,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:02:42,859 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:42,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:42,860 INFO L85 PathProgramCache]: Analyzing trace with hash -71435772, now seen corresponding path program 1 times [2022-11-18 21:02:42,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:42,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014448003] [2022-11-18 21:02:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:42,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:02:43,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:43,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014448003] [2022-11-18 21:02:43,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014448003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:43,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:43,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:02:43,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128253655] [2022-11-18 21:02:43,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:43,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:43,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:43,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:43,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:43,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:02:43,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 943 transitions, 2242 flow. Second operand has 4 states, 4 states have (on average 882.0) internal successors, (3528), 4 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:43,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:43,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:02:43,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:45,398 INFO L130 PetriNetUnfolder]: 519/3742 cut-off events. [2022-11-18 21:02:45,398 INFO L131 PetriNetUnfolder]: For 466/2406 co-relation queries the response was YES. [2022-11-18 21:02:45,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 3742 events. 519/3742 cut-off events. For 466/2406 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 36595 event pairs, 180 based on Foata normal form. 14/3018 useless extension candidates. Maximal degree in co-relation 4516. Up to 426 conditions per place. [2022-11-18 21:02:45,547 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 63 selfloop transitions, 8 changer transitions 0/964 dead transitions. [2022-11-18 21:02:45,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 964 transitions, 2431 flow [2022-11-18 21:02:45,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:02:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:02:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3595 transitions. [2022-11-18 21:02:45,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9265463917525774 [2022-11-18 21:02:45,551 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3595 transitions. [2022-11-18 21:02:45,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3595 transitions. [2022-11-18 21:02:45,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:45,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3595 transitions. [2022-11-18 21:02:45,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 898.75) internal successors, (3595), 4 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states 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 21:02:45,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states 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 21:02:45,557 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states 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 21:02:45,558 INFO L175 Difference]: Start difference. First operand has 886 places, 943 transitions, 2242 flow. Second operand 4 states and 3595 transitions. [2022-11-18 21:02:45,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 964 transitions, 2431 flow [2022-11-18 21:02:45,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 883 places, 964 transitions, 2421 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:02:45,575 INFO L231 Difference]: Finished difference. Result has 886 places, 945 transitions, 2278 flow [2022-11-18 21:02:45,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=933, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2278, PETRI_PLACES=886, PETRI_TRANSITIONS=945} [2022-11-18 21:02:45,577 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 20 predicate places. [2022-11-18 21:02:45,577 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 945 transitions, 2278 flow [2022-11-18 21:02:45,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.0) internal successors, (3528), 4 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:45,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:45,578 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:45,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:02:45,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:45,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:45,579 INFO L85 PathProgramCache]: Analyzing trace with hash 133002594, now seen corresponding path program 1 times [2022-11-18 21:02:45,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:45,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013533805] [2022-11-18 21:02:45,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:45,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:02:45,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:45,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013533805] [2022-11-18 21:02:45,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013533805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:45,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:45,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:02:45,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484268357] [2022-11-18 21:02:45,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:45,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:45,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:45,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:45,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:45,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:02:45,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 945 transitions, 2278 flow. Second operand has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states 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 21:02:45,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:45,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:02:45,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:47,990 INFO L130 PetriNetUnfolder]: 518/5114 cut-off events. [2022-11-18 21:02:47,991 INFO L131 PetriNetUnfolder]: For 240/708 co-relation queries the response was YES. [2022-11-18 21:02:48,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6465 conditions, 5114 events. 518/5114 cut-off events. For 240/708 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 53587 event pairs, 104 based on Foata normal form. 8/4372 useless extension candidates. Maximal degree in co-relation 6005. Up to 299 conditions per place. [2022-11-18 21:02:48,114 INFO L137 encePairwiseOnDemand]: 963/970 looper letters, 61 selfloop transitions, 6 changer transitions 0/962 dead transitions. [2022-11-18 21:02:48,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 891 places, 962 transitions, 2459 flow [2022-11-18 21:02:48,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:02:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6226 transitions. [2022-11-18 21:02:48,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9169366715758468 [2022-11-18 21:02:48,121 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6226 transitions. [2022-11-18 21:02:48,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6226 transitions. [2022-11-18 21:02:48,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:48,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6226 transitions. [2022-11-18 21:02:48,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.4285714285714) internal successors, (6226), 7 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states 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 21:02:48,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:48,137 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:48,137 INFO L175 Difference]: Start difference. First operand has 886 places, 945 transitions, 2278 flow. Second operand 7 states and 6226 transitions. [2022-11-18 21:02:48,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 891 places, 962 transitions, 2459 flow [2022-11-18 21:02:48,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 962 transitions, 2459 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:02:48,156 INFO L231 Difference]: Finished difference. Result has 891 places, 944 transitions, 2288 flow [2022-11-18 21:02:48,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=938, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2288, PETRI_PLACES=891, PETRI_TRANSITIONS=944} [2022-11-18 21:02:48,158 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 25 predicate places. [2022-11-18 21:02:48,158 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 944 transitions, 2288 flow [2022-11-18 21:02:48,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states 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 21:02:48,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:48,159 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:48,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 21:02:48,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:48,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:48,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1756507324, now seen corresponding path program 1 times [2022-11-18 21:02:48,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:48,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135370175] [2022-11-18 21:02:48,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:48,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:02:48,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:48,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135370175] [2022-11-18 21:02:48,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135370175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:48,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:48,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:02:48,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063455254] [2022-11-18 21:02:48,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:48,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:48,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:48,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:48,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:48,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:02:48,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 944 transitions, 2288 flow. Second operand has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states 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 21:02:48,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:48,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:02:48,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:50,608 INFO L130 PetriNetUnfolder]: 310/4127 cut-off events. [2022-11-18 21:02:50,608 INFO L131 PetriNetUnfolder]: For 238/1880 co-relation queries the response was YES. [2022-11-18 21:02:50,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 4127 events. 310/4127 cut-off events. For 238/1880 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 39093 event pairs, 48 based on Foata normal form. 14/3554 useless extension candidates. Maximal degree in co-relation 4634. Up to 204 conditions per place. [2022-11-18 21:02:50,703 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 63 selfloop transitions, 6 changer transitions 0/962 dead transitions. [2022-11-18 21:02:50,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 962 transitions, 2462 flow [2022-11-18 21:02:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:02:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:02:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3591 transitions. [2022-11-18 21:02:50,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9255154639175258 [2022-11-18 21:02:50,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3591 transitions. [2022-11-18 21:02:50,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3591 transitions. [2022-11-18 21:02:50,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:50,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3591 transitions. [2022-11-18 21:02:50,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 897.75) internal successors, (3591), 4 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states 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 21:02:50,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states 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 21:02:50,716 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states 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 21:02:50,716 INFO L175 Difference]: Start difference. First operand has 891 places, 944 transitions, 2288 flow. Second operand 4 states and 3591 transitions. [2022-11-18 21:02:50,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 962 transitions, 2462 flow [2022-11-18 21:02:50,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 962 transitions, 2448 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:02:50,735 INFO L231 Difference]: Finished difference. Result has 889 places, 942 transitions, 2274 flow [2022-11-18 21:02:50,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=936, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2274, PETRI_PLACES=889, PETRI_TRANSITIONS=942} [2022-11-18 21:02:50,737 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 23 predicate places. [2022-11-18 21:02:50,737 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 942 transitions, 2274 flow [2022-11-18 21:02:50,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states 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 21:02:50,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:50,738 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:50,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 21:02:50,739 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:50,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1382850275, now seen corresponding path program 1 times [2022-11-18 21:02:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:50,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464467004] [2022-11-18 21:02:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:50,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:02:50,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:50,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464467004] [2022-11-18 21:02:50,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464467004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:50,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:50,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:02:50,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16209842] [2022-11-18 21:02:50,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:50,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:50,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:50,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:50,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:50,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:02:51,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 942 transitions, 2274 flow. Second operand has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states 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 21:02:51,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:51,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:02:51,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:52,941 INFO L130 PetriNetUnfolder]: 503/5094 cut-off events. [2022-11-18 21:02:52,941 INFO L131 PetriNetUnfolder]: For 210/738 co-relation queries the response was YES. [2022-11-18 21:02:53,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6430 conditions, 5094 events. 503/5094 cut-off events. For 210/738 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 52299 event pairs, 145 based on Foata normal form. 10/4370 useless extension candidates. Maximal degree in co-relation 5970. Up to 321 conditions per place. [2022-11-18 21:02:53,091 INFO L137 encePairwiseOnDemand]: 963/970 looper letters, 51 selfloop transitions, 6 changer transitions 0/952 dead transitions. [2022-11-18 21:02:53,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 952 transitions, 2419 flow [2022-11-18 21:02:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:02:53,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6218 transitions. [2022-11-18 21:02:53,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9157584683357879 [2022-11-18 21:02:53,335 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6218 transitions. [2022-11-18 21:02:53,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6218 transitions. [2022-11-18 21:02:53,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:53,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6218 transitions. [2022-11-18 21:02:53,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 888.2857142857143) internal successors, (6218), 7 states have internal predecessors, (6218), 0 states have call successors, (0), 0 states 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 21:02:53,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:53,350 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:53,350 INFO L175 Difference]: Start difference. First operand has 889 places, 942 transitions, 2274 flow. Second operand 7 states and 6218 transitions. [2022-11-18 21:02:53,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 952 transitions, 2419 flow [2022-11-18 21:02:53,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 952 transitions, 2409 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 21:02:53,369 INFO L231 Difference]: Finished difference. Result has 892 places, 941 transitions, 2274 flow [2022-11-18 21:02:53,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=935, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2274, PETRI_PLACES=892, PETRI_TRANSITIONS=941} [2022-11-18 21:02:53,371 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 26 predicate places. [2022-11-18 21:02:53,371 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 941 transitions, 2274 flow [2022-11-18 21:02:53,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states 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 21:02:53,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:53,372 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:53,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 21:02:53,373 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1676258872, now seen corresponding path program 1 times [2022-11-18 21:02:53,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:53,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014543903] [2022-11-18 21:02:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:02:53,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:53,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014543903] [2022-11-18 21:02:53,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014543903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:53,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:53,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:02:53,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629294064] [2022-11-18 21:02:53,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:53,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:53,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:53,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:02:53,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 941 transitions, 2274 flow. Second operand has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states 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 21:02:53,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:53,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:02:53,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:57,546 INFO L130 PetriNetUnfolder]: 2551/10141 cut-off events. [2022-11-18 21:02:57,546 INFO L131 PetriNetUnfolder]: For 2156/3011 co-relation queries the response was YES. [2022-11-18 21:02:57,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15029 conditions, 10141 events. 2551/10141 cut-off events. For 2156/3011 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 130579 event pairs, 806 based on Foata normal form. 5/7522 useless extension candidates. Maximal degree in co-relation 14566. Up to 1722 conditions per place. [2022-11-18 21:02:57,704 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 57 selfloop transitions, 7 changer transitions 0/954 dead transitions. [2022-11-18 21:02:57,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 954 transitions, 2434 flow [2022-11-18 21:02:57,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:02:57,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6225 transitions. [2022-11-18 21:02:57,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9167893961708394 [2022-11-18 21:02:57,711 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6225 transitions. [2022-11-18 21:02:57,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6225 transitions. [2022-11-18 21:02:57,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:57,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6225 transitions. [2022-11-18 21:02:57,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.2857142857143) internal successors, (6225), 7 states have internal predecessors, (6225), 0 states have call successors, (0), 0 states 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 21:02:57,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:57,727 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states 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 21:02:57,727 INFO L175 Difference]: Start difference. First operand has 892 places, 941 transitions, 2274 flow. Second operand 7 states and 6225 transitions. [2022-11-18 21:02:57,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 954 transitions, 2434 flow [2022-11-18 21:02:57,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 954 transitions, 2424 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:02:57,745 INFO L231 Difference]: Finished difference. Result has 893 places, 940 transitions, 2276 flow [2022-11-18 21:02:57,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=887, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=933, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2276, PETRI_PLACES=893, PETRI_TRANSITIONS=940} [2022-11-18 21:02:57,747 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 27 predicate places. [2022-11-18 21:02:57,747 INFO L495 AbstractCegarLoop]: Abstraction has has 893 places, 940 transitions, 2276 flow [2022-11-18 21:02:57,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states 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 21:02:57,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:57,748 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:57,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 21:02:57,749 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:02:57,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:57,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1708597270, now seen corresponding path program 1 times [2022-11-18 21:02:57,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:57,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485608413] [2022-11-18 21:02:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:57,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:02:57,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:57,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485608413] [2022-11-18 21:02:57,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485608413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:57,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:57,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:02:57,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208352261] [2022-11-18 21:02:57,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:57,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:57,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:57,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:57,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:57,922 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:02:57,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 940 transitions, 2276 flow. Second operand has 4 states, 4 states have (on average 882.5) internal successors, (3530), 4 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states 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 21:02:57,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:57,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:02:57,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:00,034 INFO L130 PetriNetUnfolder]: 310/4268 cut-off events. [2022-11-18 21:03:00,034 INFO L131 PetriNetUnfolder]: For 171/1933 co-relation queries the response was YES. [2022-11-18 21:03:00,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5289 conditions, 4268 events. 310/4268 cut-off events. For 171/1933 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 41082 event pairs, 72 based on Foata normal form. 14/3700 useless extension candidates. Maximal degree in co-relation 4831. Up to 214 conditions per place. [2022-11-18 21:03:00,148 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 58 selfloop transitions, 6 changer transitions 0/958 dead transitions. [2022-11-18 21:03:00,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 958 transitions, 2443 flow [2022-11-18 21:03:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:03:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:03:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3586 transitions. [2022-11-18 21:03:00,152 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9242268041237114 [2022-11-18 21:03:00,152 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3586 transitions. [2022-11-18 21:03:00,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3586 transitions. [2022-11-18 21:03:00,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:00,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3586 transitions. [2022-11-18 21:03:00,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 896.5) internal successors, (3586), 4 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states 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 21:03:00,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states 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 21:03:00,162 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states 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 21:03:00,163 INFO L175 Difference]: Start difference. First operand has 893 places, 940 transitions, 2276 flow. Second operand 4 states and 3586 transitions. [2022-11-18 21:03:00,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 958 transitions, 2443 flow [2022-11-18 21:03:00,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 888 places, 958 transitions, 2428 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:03:00,183 INFO L231 Difference]: Finished difference. Result has 889 places, 940 transitions, 2278 flow [2022-11-18 21:03:00,184 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=932, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2278, PETRI_PLACES=889, PETRI_TRANSITIONS=940} [2022-11-18 21:03:00,185 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 23 predicate places. [2022-11-18 21:03:00,185 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 940 transitions, 2278 flow [2022-11-18 21:03:00,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.5) internal successors, (3530), 4 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states 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 21:03:00,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:00,186 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:00,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 21:03:00,186 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:03:00,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash -424414583, now seen corresponding path program 1 times [2022-11-18 21:03:00,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:00,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194917972] [2022-11-18 21:03:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:00,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:03:00,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:00,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194917972] [2022-11-18 21:03:00,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194917972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:00,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:00,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:03:00,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171385164] [2022-11-18 21:03:00,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:00,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:03:00,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:00,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:03:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:00,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:03:00,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 940 transitions, 2278 flow. Second operand has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states 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 21:03:00,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:00,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:03:00,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:04,874 INFO L130 PetriNetUnfolder]: 2816/12048 cut-off events. [2022-11-18 21:03:04,875 INFO L131 PetriNetUnfolder]: For 2787/4130 co-relation queries the response was YES. [2022-11-18 21:03:05,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17915 conditions, 12048 events. 2816/12048 cut-off events. For 2787/4130 co-relation queries the response was YES. Maximal size of possible extension queue 1889. Compared 172178 event pairs, 1260 based on Foata normal form. 0/8492 useless extension candidates. Maximal degree in co-relation 17459. Up to 2639 conditions per place. [2022-11-18 21:03:05,050 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 62 selfloop transitions, 8 changer transitions 0/960 dead transitions. [2022-11-18 21:03:05,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 890 places, 960 transitions, 2461 flow [2022-11-18 21:03:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:03:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:03:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3594 transitions. [2022-11-18 21:03:05,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9262886597938145 [2022-11-18 21:03:05,053 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3594 transitions. [2022-11-18 21:03:05,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3594 transitions. [2022-11-18 21:03:05,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:05,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3594 transitions. [2022-11-18 21:03:05,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 898.5) internal successors, (3594), 4 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states 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 21:03:05,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states 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 21:03:05,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states 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 21:03:05,061 INFO L175 Difference]: Start difference. First operand has 889 places, 940 transitions, 2278 flow. Second operand 4 states and 3594 transitions. [2022-11-18 21:03:05,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 890 places, 960 transitions, 2461 flow [2022-11-18 21:03:05,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 960 transitions, 2457 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:03:05,080 INFO L231 Difference]: Finished difference. Result has 892 places, 942 transitions, 2321 flow [2022-11-18 21:03:05,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=930, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2321, PETRI_PLACES=892, PETRI_TRANSITIONS=942} [2022-11-18 21:03:05,081 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 26 predicate places. [2022-11-18 21:03:05,082 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 942 transitions, 2321 flow [2022-11-18 21:03:05,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states 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 21:03:05,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:05,083 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:05,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 21:03:05,083 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-18 21:03:05,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1561329321, now seen corresponding path program 1 times [2022-11-18 21:03:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:05,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580619648] [2022-11-18 21:03:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:05,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-18 21:03:05,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:05,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580619648] [2022-11-18 21:03:05,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580619648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:05,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:05,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:03:05,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209692828] [2022-11-18 21:03:05,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:05,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:03:05,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:05,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:03:05,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:03:05,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-18 21:03:05,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 942 transitions, 2321 flow. Second operand has 6 states, 6 states have (on average 882.0) internal successors, (5292), 6 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states 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 21:03:05,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:05,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-18 21:03:05,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand