./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8 --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 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb --- 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-e04fb08 [2022-11-16 12:13:01,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:13:01,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:13:01,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:13:01,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:13:01,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:13:01,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:13:01,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:13:01,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:13:01,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:13:01,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:13:01,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:13:01,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:13:01,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:13:01,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:13:01,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:13:01,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:13:01,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:13:01,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:13:01,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:13:01,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:13:01,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:13:01,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:13:01,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:13:01,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:13:01,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:13:01,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:13:01,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:13:01,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:13:01,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:13:01,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:13:01,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:13:01,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:13:01,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:13:01,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:13:01,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:13:01,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:13:01,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:13:01,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:13:01,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:13:01,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:13:01,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:13:01,852 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:13:01,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:13:01,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:13:01,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:13:01,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:13:01,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:13:01,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:13:01,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:13:01,855 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:13:01,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:13:01,856 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:13:01,856 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:13:01,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:13:01,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:13:01,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:13:01,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:13:01,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:13:01,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:13:01,857 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:13:01,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:13:01,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:13:01,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:13:01,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:13:01,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:13:01,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:13:01,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:13:01,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:01,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:13:01,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:13:01,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:13:01,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:13:01,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:13:01,867 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:13:01,868 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:13:01,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:13:01,868 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_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb [2022-11-16 12:13:02,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:13:02,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:13:02,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:13:02,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:13:02,194 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:13:02,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-11-16 12:13:02,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/data/a31179f37/7af60214a14c49c4a26415768cc1405d/FLAG00c857312 [2022-11-16 12:13:02,883 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:13:02,884 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-11-16 12:13:02,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/data/a31179f37/7af60214a14c49c4a26415768cc1405d/FLAG00c857312 [2022-11-16 12:13:03,172 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/data/a31179f37/7af60214a14c49c4a26415768cc1405d [2022-11-16 12:13:03,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:13:03,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:13:03,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:03,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:13:03,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:13:03,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3f12a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03, skipping insertion in model container [2022-11-16 12:13:03,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:13:03,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:13:03,643 WARN L229 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_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-11-16 12:13:03,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:03,672 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:13:03,757 WARN L229 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_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-11-16 12:13:03,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:03,792 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:13:03,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03 WrapperNode [2022-11-16 12:13:03,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:03,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:03,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:13:03,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:13:03,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,882 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 706 [2022-11-16 12:13:03,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:03,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:13:03,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:13:03,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:13:03,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:13:03,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:13:03,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:13:03,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:13:03,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:03,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:03,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:13:04,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:13:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:13:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:13:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:13:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:13:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:13:04,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:13:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:13:04,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:13:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:13:04,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:13:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:13:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:13:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:13:04,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:13:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:13:04,060 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:13:04,229 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:13:04,231 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:13:05,750 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:13:05,770 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:13:05,770 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:13:05,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:05 BoogieIcfgContainer [2022-11-16 12:13:05,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:13:05,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:13:05,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:13:05,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:13:05,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:13:03" (1/3) ... [2022-11-16 12:13:05,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd5a0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:05, skipping insertion in model container [2022-11-16 12:13:05,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (2/3) ... [2022-11-16 12:13:05,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd5a0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:05, skipping insertion in model container [2022-11-16 12:13:05,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:05" (3/3) ... [2022-11-16 12:13:05,786 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2022-11-16 12:13:05,796 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:13:05,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:13:05,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-11-16 12:13:05,809 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:13:06,131 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:13:06,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 889 places, 970 transitions, 1964 flow [2022-11-16 12:13:06,876 INFO L130 PetriNetUnfolder]: 91/967 cut-off events. [2022-11-16 12:13:06,876 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:13:06,925 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. [2022-11-16 12:13:06,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 889 places, 970 transitions, 1964 flow [2022-11-16 12:13:06,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 866 places, 946 transitions, 1907 flow [2022-11-16 12:13:06,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:13:06,994 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;@40570cad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:13:06,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2022-11-16 12:13:07,012 INFO L130 PetriNetUnfolder]: 3/118 cut-off events. [2022-11-16 12:13:07,012 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:13:07,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:07,013 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] [2022-11-16 12:13:07,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:07,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:07,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1045458, now seen corresponding path program 1 times [2022-11-16 12:13:07,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:07,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611756494] [2022-11-16 12:13:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:07,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:07,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:07,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611756494] [2022-11-16 12:13:07,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611756494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:07,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:07,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:13:07,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198708289] [2022-11-16 12:13:07,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:07,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:13:07,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:07,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:13:07,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:13:07,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-16 12:13:07,781 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) [2022-11-16 12:13:07,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:07,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-16 12:13:07,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:09,169 INFO L130 PetriNetUnfolder]: 107/1669 cut-off events. [2022-11-16 12:13:09,170 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-16 12:13:09,234 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. [2022-11-16 12:13:09,278 INFO L137 encePairwiseOnDemand]: 914/970 looper letters, 58 selfloop transitions, 14 changer transitions 6/941 dead transitions. [2022-11-16 12:13:09,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 941 transitions, 2056 flow [2022-11-16 12:13:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:13:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:13:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4594 transitions. [2022-11-16 12:13:09,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9472164948453609 [2022-11-16 12:13:09,315 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4594 transitions. [2022-11-16 12:13:09,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4594 transitions. [2022-11-16 12:13:09,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:09,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4594 transitions. [2022-11-16 12:13:09,341 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) [2022-11-16 12:13:09,361 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) [2022-11-16 12:13:09,366 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) [2022-11-16 12:13:09,369 INFO L175 Difference]: Start difference. First operand has 866 places, 946 transitions, 1907 flow. Second operand 5 states and 4594 transitions. [2022-11-16 12:13:09,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 941 transitions, 2056 flow [2022-11-16 12:13:09,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 865 places, 941 transitions, 2038 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:13:09,406 INFO L231 Difference]: Finished difference. Result has 868 places, 915 transitions, 1918 flow [2022-11-16 12:13:09,410 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} [2022-11-16 12:13:09,416 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 2 predicate places. [2022-11-16 12:13:09,417 INFO L495 AbstractCegarLoop]: Abstraction has has 868 places, 915 transitions, 1918 flow [2022-11-16 12:13:09,420 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) [2022-11-16 12:13:09,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:09,422 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] [2022-11-16 12:13:09,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:13:09,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:09,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:09,423 INFO L85 PathProgramCache]: Analyzing trace with hash -184970811, now seen corresponding path program 1 times [2022-11-16 12:13:09,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:09,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478771833] [2022-11-16 12:13:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:09,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:09,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:09,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:09,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478771833] [2022-11-16 12:13:09,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478771833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:09,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875873099] [2022-11-16 12:13:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:09,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:09,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:09,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:09,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:13:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:10,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:13:10,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:10,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:10,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875873099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:10,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:10,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:13:10,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170585533] [2022-11-16 12:13:10,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:10,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:13:10,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:10,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:13:10,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:13:10,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-16 12:13:10,281 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) [2022-11-16 12:13:10,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:10,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-16 12:13:10,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:13,423 INFO L130 PetriNetUnfolder]: 266/3946 cut-off events. [2022-11-16 12:13:13,423 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-11-16 12:13:13,546 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. [2022-11-16 12:13:13,620 INFO L137 encePairwiseOnDemand]: 947/970 looper letters, 109 selfloop transitions, 62 changer transitions 0/1034 dead transitions. [2022-11-16 12:13:13,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 879 places, 1034 transitions, 2600 flow [2022-11-16 12:13:13,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:13:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:13:13,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 16200 transitions. [2022-11-16 12:13:13,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9278350515463918 [2022-11-16 12:13:13,662 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 16200 transitions. [2022-11-16 12:13:13,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 16200 transitions. [2022-11-16 12:13:13,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:13,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 16200 transitions. [2022-11-16 12:13:13,725 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) [2022-11-16 12:13:13,885 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) [2022-11-16 12:13:13,894 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) [2022-11-16 12:13:13,894 INFO L175 Difference]: Start difference. First operand has 868 places, 915 transitions, 1918 flow. Second operand 18 states and 16200 transitions. [2022-11-16 12:13:13,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 879 places, 1034 transitions, 2600 flow [2022-11-16 12:13:13,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1034 transitions, 2592 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:13:13,918 INFO L231 Difference]: Finished difference. Result has 882 places, 957 transitions, 2280 flow [2022-11-16 12:13:13,919 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} [2022-11-16 12:13:13,920 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 16 predicate places. [2022-11-16 12:13:13,921 INFO L495 AbstractCegarLoop]: Abstraction has has 882 places, 957 transitions, 2280 flow [2022-11-16 12:13:13,925 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) [2022-11-16 12:13:13,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:13,926 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] [2022-11-16 12:13:13,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:14,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:14,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:14,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1439125716, now seen corresponding path program 1 times [2022-11-16 12:13:14,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:14,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454819031] [2022-11-16 12:13:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:14,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:14,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:14,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454819031] [2022-11-16 12:13:14,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454819031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:14,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881910482] [2022-11-16 12:13:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:14,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:14,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:14,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:14,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:13:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:14,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:13:14,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:14,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:14,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881910482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:14,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:13:14,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:13:14,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489442402] [2022-11-16 12:13:14,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:14,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:14,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:14,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:13:14,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-16 12:13:14,562 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) [2022-11-16 12:13:14,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:14,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-16 12:13:14,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:17,141 INFO L130 PetriNetUnfolder]: 266/3934 cut-off events. [2022-11-16 12:13:17,141 INFO L131 PetriNetUnfolder]: For 205/215 co-relation queries the response was YES. [2022-11-16 12:13:17,236 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. [2022-11-16 12:13:17,297 INFO L137 encePairwiseOnDemand]: 953/970 looper letters, 59 selfloop transitions, 43 changer transitions 0/965 dead transitions. [2022-11-16 12:13:17,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 965 transitions, 2455 flow [2022-11-16 12:13:17,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:13:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:13:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6302 transitions. [2022-11-16 12:13:17,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9281296023564065 [2022-11-16 12:13:17,316 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6302 transitions. [2022-11-16 12:13:17,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6302 transitions. [2022-11-16 12:13:17,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:17,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6302 transitions. [2022-11-16 12:13:17,339 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) [2022-11-16 12:13:17,354 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) [2022-11-16 12:13:17,357 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) [2022-11-16 12:13:17,357 INFO L175 Difference]: Start difference. First operand has 882 places, 957 transitions, 2280 flow. Second operand 7 states and 6302 transitions. [2022-11-16 12:13:17,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 965 transitions, 2455 flow [2022-11-16 12:13:17,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 965 transitions, 2339 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 12:13:17,390 INFO L231 Difference]: Finished difference. Result has 876 places, 945 transitions, 2169 flow [2022-11-16 12:13:17,392 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} [2022-11-16 12:13:17,394 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 10 predicate places. [2022-11-16 12:13:17,395 INFO L495 AbstractCegarLoop]: Abstraction has has 876 places, 945 transitions, 2169 flow [2022-11-16 12:13:17,397 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) [2022-11-16 12:13:17,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:17,398 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] [2022-11-16 12:13:17,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 12:13:17,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:17,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:17,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:17,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1976264290, now seen corresponding path program 2 times [2022-11-16 12:13:17,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:17,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095686116] [2022-11-16 12:13:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:17,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:18,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:18,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095686116] [2022-11-16 12:13:18,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095686116] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:18,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93359542] [2022-11-16 12:13:18,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:13:18,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:18,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:18,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:18,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:13:18,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:13:18,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:13:18,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:13:18,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 12:13:18,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 12:13:18,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93359542] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:18,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:18,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-16 12:13:18,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452816384] [2022-11-16 12:13:18,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:18,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:13:18,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:18,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:13:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:13:18,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-16 12:13:18,671 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) [2022-11-16 12:13:18,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:18,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-16 12:13:18,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:21,638 INFO L130 PetriNetUnfolder]: 319/4672 cut-off events. [2022-11-16 12:13:21,639 INFO L131 PetriNetUnfolder]: For 189/201 co-relation queries the response was YES. [2022-11-16 12:13:21,803 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. [2022-11-16 12:13:21,889 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 127 selfloop transitions, 67 changer transitions 0/1045 dead transitions. [2022-11-16 12:13:21,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 892 places, 1045 transitions, 2804 flow [2022-11-16 12:13:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:13:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:13:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 17757 transitions. [2022-11-16 12:13:21,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153092783505155 [2022-11-16 12:13:21,940 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 17757 transitions. [2022-11-16 12:13:21,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 17757 transitions. [2022-11-16 12:13:21,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:21,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 17757 transitions. [2022-11-16 12:13:21,998 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) [2022-11-16 12:13:22,040 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) [2022-11-16 12:13:22,051 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) [2022-11-16 12:13:22,052 INFO L175 Difference]: Start difference. First operand has 876 places, 945 transitions, 2169 flow. Second operand 20 states and 17757 transitions. [2022-11-16 12:13:22,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 892 places, 1045 transitions, 2804 flow [2022-11-16 12:13:22,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 883 places, 1045 transitions, 2721 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 12:13:22,083 INFO L231 Difference]: Finished difference. Result has 884 places, 950 transitions, 2243 flow [2022-11-16 12:13:22,084 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} [2022-11-16 12:13:22,086 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 18 predicate places. [2022-11-16 12:13:22,087 INFO L495 AbstractCegarLoop]: Abstraction has has 884 places, 950 transitions, 2243 flow [2022-11-16 12:13:22,092 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) [2022-11-16 12:13:22,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:22,093 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] [2022-11-16 12:13:22,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:22,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:22,307 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:22,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:22,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1358411985, now seen corresponding path program 1 times [2022-11-16 12:13:22,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:22,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831061612] [2022-11-16 12:13:22,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:22,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:22,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:22,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831061612] [2022-11-16 12:13:22,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831061612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:22,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:22,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:13:22,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408774922] [2022-11-16 12:13:22,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:22,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:13:22,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:22,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:13:22,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:13:22,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 893 out of 970 [2022-11-16 12:13:22,545 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) [2022-11-16 12:13:22,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:22,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 893 of 970 [2022-11-16 12:13:22,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:25,422 INFO L130 PetriNetUnfolder]: 266/3937 cut-off events. [2022-11-16 12:13:25,422 INFO L131 PetriNetUnfolder]: For 245/255 co-relation queries the response was YES. [2022-11-16 12:13:25,511 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. [2022-11-16 12:13:25,568 INFO L137 encePairwiseOnDemand]: 955/970 looper letters, 59 selfloop transitions, 20 changer transitions 0/954 dead transitions. [2022-11-16 12:13:25,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 954 transitions, 2405 flow [2022-11-16 12:13:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:13:25,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:13:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4518 transitions. [2022-11-16 12:13:25,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9315463917525774 [2022-11-16 12:13:25,582 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4518 transitions. [2022-11-16 12:13:25,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4518 transitions. [2022-11-16 12:13:25,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:25,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4518 transitions. [2022-11-16 12:13:25,598 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) [2022-11-16 12:13:25,608 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) [2022-11-16 12:13:25,611 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) [2022-11-16 12:13:25,611 INFO L175 Difference]: Start difference. First operand has 884 places, 950 transitions, 2243 flow. Second operand 5 states and 4518 transitions. [2022-11-16 12:13:25,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 954 transitions, 2405 flow [2022-11-16 12:13:25,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 954 transitions, 2261 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-16 12:13:25,636 INFO L231 Difference]: Finished difference. Result has 874 places, 948 transitions, 2137 flow [2022-11-16 12:13:25,638 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} [2022-11-16 12:13:25,639 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 8 predicate places. [2022-11-16 12:13:25,639 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 948 transitions, 2137 flow [2022-11-16 12:13:25,641 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) [2022-11-16 12:13:25,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:25,641 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] [2022-11-16 12:13:25,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:13:25,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:25,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:25,643 INFO L85 PathProgramCache]: Analyzing trace with hash -880091052, now seen corresponding path program 1 times [2022-11-16 12:13:25,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:25,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050336363] [2022-11-16 12:13:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:25,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:13:25,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:25,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050336363] [2022-11-16 12:13:25,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050336363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:25,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941548808] [2022-11-16 12:13:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:25,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:25,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:25,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:26,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:13:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:26,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:13:26,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:13:26,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:13:26,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941548808] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:26,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:26,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 12:13:26,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102791382] [2022-11-16 12:13:26,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:26,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:13:26,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:13:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:13:26,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-16 12:13:26,575 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) [2022-11-16 12:13:26,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:26,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-16 12:13:26,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:28,180 INFO L130 PetriNetUnfolder]: 160/2467 cut-off events. [2022-11-16 12:13:28,181 INFO L131 PetriNetUnfolder]: For 73/79 co-relation queries the response was YES. [2022-11-16 12:13:28,229 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. [2022-11-16 12:13:28,254 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 74 selfloop transitions, 46 changer transitions 0/971 dead transitions. [2022-11-16 12:13:28,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 971 transitions, 2433 flow [2022-11-16 12:13:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:13:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:13:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 9756 transitions. [2022-11-16 12:13:28,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9143392689784442 [2022-11-16 12:13:28,283 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 9756 transitions. [2022-11-16 12:13:28,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 9756 transitions. [2022-11-16 12:13:28,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:28,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 9756 transitions. [2022-11-16 12:13:28,315 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) [2022-11-16 12:13:28,335 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) [2022-11-16 12:13:28,340 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) [2022-11-16 12:13:28,340 INFO L175 Difference]: Start difference. First operand has 874 places, 948 transitions, 2137 flow. Second operand 11 states and 9756 transitions. [2022-11-16 12:13:28,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 971 transitions, 2433 flow [2022-11-16 12:13:28,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 971 transitions, 2401 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:13:28,364 INFO L231 Difference]: Finished difference. Result has 883 places, 947 transitions, 2250 flow [2022-11-16 12:13:28,366 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} [2022-11-16 12:13:28,367 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 17 predicate places. [2022-11-16 12:13:28,367 INFO L495 AbstractCegarLoop]: Abstraction has has 883 places, 947 transitions, 2250 flow [2022-11-16 12:13:28,372 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) [2022-11-16 12:13:28,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:28,373 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] [2022-11-16 12:13:28,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:28,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:28,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:28,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:28,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1377829278, now seen corresponding path program 2 times [2022-11-16 12:13:28,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:28,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986830009] [2022-11-16 12:13:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:28,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 12:13:29,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:29,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986830009] [2022-11-16 12:13:29,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986830009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:29,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521972735] [2022-11-16 12:13:29,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:13:29,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:29,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:29,183 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:29,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:13:29,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:13:29,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:13:29,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:13:29,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 12:13:29,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:29,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521972735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:29,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:13:29,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-16 12:13:29,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023243601] [2022-11-16 12:13:29,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:29,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:29,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:29,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:29,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:13:29,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-16 12:13:29,855 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) [2022-11-16 12:13:29,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:29,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-16 12:13:29,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:34,162 INFO L130 PetriNetUnfolder]: 880/8308 cut-off events. [2022-11-16 12:13:34,162 INFO L131 PetriNetUnfolder]: For 167/173 co-relation queries the response was YES. [2022-11-16 12:13:34,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9896 conditions, 8308 events. 880/8308 cut-off events. For 167/173 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 93801 event pairs, 132 based on Foata normal form. 0/6907 useless extension candidates. Maximal degree in co-relation 3130. Up to 357 conditions per place. [2022-11-16 12:13:34,441 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 61 selfloop transitions, 7 changer transitions 0/964 dead transitions. [2022-11-16 12:13:34,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 964 transitions, 2433 flow [2022-11-16 12:13:34,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:13:34,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:13:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6229 transitions. [2022-11-16 12:13:34,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9173784977908689 [2022-11-16 12:13:34,454 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6229 transitions. [2022-11-16 12:13:34,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6229 transitions. [2022-11-16 12:13:34,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:34,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6229 transitions. [2022-11-16 12:13:34,469 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) [2022-11-16 12:13:34,479 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) [2022-11-16 12:13:34,482 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) [2022-11-16 12:13:34,482 INFO L175 Difference]: Start difference. First operand has 883 places, 947 transitions, 2250 flow. Second operand 7 states and 6229 transitions. [2022-11-16 12:13:34,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 964 transitions, 2433 flow [2022-11-16 12:13:34,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 879 places, 964 transitions, 2362 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-16 12:13:34,503 INFO L231 Difference]: Finished difference. Result has 879 places, 946 transitions, 2191 flow [2022-11-16 12:13:34,505 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} [2022-11-16 12:13:34,505 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 13 predicate places. [2022-11-16 12:13:34,506 INFO L495 AbstractCegarLoop]: Abstraction has has 879 places, 946 transitions, 2191 flow [2022-11-16 12:13:34,507 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) [2022-11-16 12:13:34,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:34,508 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] [2022-11-16 12:13:34,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:34,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:13:34,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:34,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:34,715 INFO L85 PathProgramCache]: Analyzing trace with hash -236962919, now seen corresponding path program 1 times [2022-11-16 12:13:34,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:34,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715465247] [2022-11-16 12:13:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:34,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 12:13:34,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:34,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715465247] [2022-11-16 12:13:34,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715465247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:34,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:34,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:13:34,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566929527] [2022-11-16 12:13:34,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:34,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:13:34,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:34,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:13:34,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:13:34,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-16 12:13:34,921 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) [2022-11-16 12:13:34,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:34,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-16 12:13:34,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:39,538 INFO L130 PetriNetUnfolder]: 961/9898 cut-off events. [2022-11-16 12:13:39,538 INFO L131 PetriNetUnfolder]: For 145/151 co-relation queries the response was YES. [2022-11-16 12:13:39,778 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. [2022-11-16 12:13:39,869 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 64 selfloop transitions, 8 changer transitions 0/968 dead transitions. [2022-11-16 12:13:39,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 880 places, 968 transitions, 2385 flow [2022-11-16 12:13:39,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:13:39,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:13:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3596 transitions. [2022-11-16 12:13:39,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9268041237113402 [2022-11-16 12:13:39,874 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3596 transitions. [2022-11-16 12:13:39,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3596 transitions. [2022-11-16 12:13:39,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:39,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3596 transitions. [2022-11-16 12:13:39,882 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) [2022-11-16 12:13:39,887 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) [2022-11-16 12:13:39,888 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) [2022-11-16 12:13:39,889 INFO L175 Difference]: Start difference. First operand has 879 places, 946 transitions, 2191 flow. Second operand 4 states and 3596 transitions. [2022-11-16 12:13:39,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 880 places, 968 transitions, 2385 flow [2022-11-16 12:13:39,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 968 transitions, 2375 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:13:39,911 INFO L231 Difference]: Finished difference. Result has 879 places, 948 transitions, 2227 flow [2022-11-16 12:13:39,913 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} [2022-11-16 12:13:39,913 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 13 predicate places. [2022-11-16 12:13:39,914 INFO L495 AbstractCegarLoop]: Abstraction has has 879 places, 948 transitions, 2227 flow [2022-11-16 12:13:39,915 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) [2022-11-16 12:13:39,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:39,915 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] [2022-11-16 12:13:39,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:13:39,916 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2005436054, now seen corresponding path program 1 times [2022-11-16 12:13:39,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:39,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151892574] [2022-11-16 12:13:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:39,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 12:13:40,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:40,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151892574] [2022-11-16 12:13:40,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151892574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:40,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003918889] [2022-11-16 12:13:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:40,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:40,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:40,368 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:40,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:13:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:40,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:13:40,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 12:13:41,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 12:13:41,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003918889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:41,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:41,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-16 12:13:41,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192572319] [2022-11-16 12:13:41,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:41,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:13:41,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:13:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:13:41,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-16 12:13:41,357 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) [2022-11-16 12:13:41,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:41,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-16 12:13:41,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:42,592 INFO L130 PetriNetUnfolder]: 52/1117 cut-off events. [2022-11-16 12:13:42,593 INFO L131 PetriNetUnfolder]: For 121/131 co-relation queries the response was YES. [2022-11-16 12:13:42,642 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. [2022-11-16 12:13:42,655 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 83 selfloop transitions, 51 changer transitions 0/986 dead transitions. [2022-11-16 12:13:42,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 986 transitions, 2600 flow [2022-11-16 12:13:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:13:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:13:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 15066 transitions. [2022-11-16 12:13:42,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9136446331109763 [2022-11-16 12:13:42,673 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 15066 transitions. [2022-11-16 12:13:42,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 15066 transitions. [2022-11-16 12:13:42,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:42,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 15066 transitions. [2022-11-16 12:13:42,703 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) [2022-11-16 12:13:42,722 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) [2022-11-16 12:13:42,726 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) [2022-11-16 12:13:42,726 INFO L175 Difference]: Start difference. First operand has 879 places, 948 transitions, 2227 flow. Second operand 17 states and 15066 transitions. [2022-11-16 12:13:42,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 986 transitions, 2600 flow [2022-11-16 12:13:42,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 895 places, 986 transitions, 2600 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:13:42,749 INFO L231 Difference]: Finished difference. Result has 897 places, 944 transitions, 2332 flow [2022-11-16 12:13:42,751 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} [2022-11-16 12:13:42,752 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 31 predicate places. [2022-11-16 12:13:42,752 INFO L495 AbstractCegarLoop]: Abstraction has has 897 places, 944 transitions, 2332 flow [2022-11-16 12:13:42,756 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) [2022-11-16 12:13:42,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:42,757 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] [2022-11-16 12:13:42,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:42,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ba2ac1-f3d0-4cb7-93cc-5d32c646f93e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:42,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:42,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:42,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1660263520, now seen corresponding path program 2 times [2022-11-16 12:13:42,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:42,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188639611] [2022-11-16 12:13:42,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:42,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-16 12:13:43,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:43,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188639611] [2022-11-16 12:13:43,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188639611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:43,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:43,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:13:43,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134778148] [2022-11-16 12:13:43,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:43,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:43,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:43,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:43,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:43,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-16 12:13:43,439 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) [2022-11-16 12:13:43,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:43,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-16 12:13:43,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:46,323 INFO L130 PetriNetUnfolder]: 904/5188 cut-off events. [2022-11-16 12:13:46,323 INFO L131 PetriNetUnfolder]: For 617/1834 co-relation queries the response was YES. [2022-11-16 12:13:46,426 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. [2022-11-16 12:13:46,474 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 59 selfloop transitions, 7 changer transitions 0/959 dead transitions. [2022-11-16 12:13:46,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 902 places, 959 transitions, 2505 flow [2022-11-16 12:13:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:13:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:13:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6227 transitions. [2022-11-16 12:13:46,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9170839469808542 [2022-11-16 12:13:46,479 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6227 transitions. [2022-11-16 12:13:46,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6227 transitions. [2022-11-16 12:13:46,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:46,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6227 transitions. [2022-11-16 12:13:46,491 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) [2022-11-16 12:13:46,499 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) [2022-11-16 12:13:46,501 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) [2022-11-16 12:13:46,502 INFO L175 Difference]: Start difference. First operand has 897 places, 944 transitions, 2332 flow. Second operand 7 states and 6227 transitions. [2022-11-16 12:13:46,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 902 places, 959 transitions, 2505 flow [2022-11-16 12:13:46,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 886 places, 959 transitions, 2403 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-16 12:13:46,526 INFO L231 Difference]: Finished difference. Result has 886 places, 943 transitions, 2242 flow [2022-11-16 12:13:46,528 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} [2022-11-16 12:13:46,528 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 20 predicate places. [2022-11-16 12:13:46,529 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 943 transitions, 2242 flow [2022-11-16 12:13:46,530 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) [2022-11-16 12:13:46,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:46,531 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] [2022-11-16 12:13:46,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:13:46,531 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:46,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:46,532 INFO L85 PathProgramCache]: Analyzing trace with hash -71435772, now seen corresponding path program 1 times [2022-11-16 12:13:46,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:46,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31963534] [2022-11-16 12:13:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-16 12:13:46,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:46,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31963534] [2022-11-16 12:13:46,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31963534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:46,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:46,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:13:46,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446168745] [2022-11-16 12:13:46,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:46,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:13:46,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:46,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:13:46,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:13:46,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-16 12:13:46,735 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) [2022-11-16 12:13:46,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:46,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-16 12:13:46,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:49,031 INFO L130 PetriNetUnfolder]: 519/3742 cut-off events. [2022-11-16 12:13:49,031 INFO L131 PetriNetUnfolder]: For 466/2406 co-relation queries the response was YES. [2022-11-16 12:13:49,131 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. [2022-11-16 12:13:49,190 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 63 selfloop transitions, 8 changer transitions 0/964 dead transitions. [2022-11-16 12:13:49,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 964 transitions, 2431 flow [2022-11-16 12:13:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:13:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:13:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3595 transitions. [2022-11-16 12:13:49,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9265463917525774 [2022-11-16 12:13:49,195 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3595 transitions. [2022-11-16 12:13:49,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3595 transitions. [2022-11-16 12:13:49,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:49,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3595 transitions. [2022-11-16 12:13:49,203 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) [2022-11-16 12:13:49,208 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) [2022-11-16 12:13:49,209 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) [2022-11-16 12:13:49,209 INFO L175 Difference]: Start difference. First operand has 886 places, 943 transitions, 2242 flow. Second operand 4 states and 3595 transitions. [2022-11-16 12:13:49,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 964 transitions, 2431 flow [2022-11-16 12:13:49,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 883 places, 964 transitions, 2421 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:13:49,232 INFO L231 Difference]: Finished difference. Result has 886 places, 945 transitions, 2278 flow [2022-11-16 12:13:49,233 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} [2022-11-16 12:13:49,234 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 20 predicate places. [2022-11-16 12:13:49,234 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 945 transitions, 2278 flow [2022-11-16 12:13:49,235 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) [2022-11-16 12:13:49,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:49,235 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] [2022-11-16 12:13:49,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:13:49,236 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:49,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:49,236 INFO L85 PathProgramCache]: Analyzing trace with hash 133002594, now seen corresponding path program 1 times [2022-11-16 12:13:49,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:49,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804379308] [2022-11-16 12:13:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:49,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-16 12:13:49,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:49,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804379308] [2022-11-16 12:13:49,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804379308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:49,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:49,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:13:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595480626] [2022-11-16 12:13:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:49,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:49,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:49,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:49,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-16 12:13:49,533 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) [2022-11-16 12:13:49,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:49,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-16 12:13:49,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:51,613 INFO L130 PetriNetUnfolder]: 366/3998 cut-off events. [2022-11-16 12:13:51,613 INFO L131 PetriNetUnfolder]: For 259/1655 co-relation queries the response was YES. [2022-11-16 12:13:51,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 3998 events. 366/3998 cut-off events. For 259/1655 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 38983 event pairs, 78 based on Foata normal form. 8/3440 useless extension candidates. Maximal degree in co-relation 4639. Up to 247 conditions per place. [2022-11-16 12:13:51,719 INFO L137 encePairwiseOnDemand]: 963/970 looper letters, 61 selfloop transitions, 6 changer transitions 0/962 dead transitions. [2022-11-16 12:13:51,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 891 places, 962 transitions, 2459 flow [2022-11-16 12:13:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:13:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:13:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6226 transitions. [2022-11-16 12:13:51,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9169366715758468 [2022-11-16 12:13:51,725 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6226 transitions. [2022-11-16 12:13:51,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6226 transitions. [2022-11-16 12:13:51,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:51,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6226 transitions. [2022-11-16 12:13:51,735 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) [2022-11-16 12:13:51,741 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) [2022-11-16 12:13:51,742 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) [2022-11-16 12:13:51,743 INFO L175 Difference]: Start difference. First operand has 886 places, 945 transitions, 2278 flow. Second operand 7 states and 6226 transitions. [2022-11-16 12:13:51,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 891 places, 962 transitions, 2459 flow [2022-11-16 12:13:51,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 962 transitions, 2459 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:13:51,760 INFO L231 Difference]: Finished difference. Result has 891 places, 944 transitions, 2288 flow [2022-11-16 12:13:51,762 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} [2022-11-16 12:13:51,762 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 25 predicate places. [2022-11-16 12:13:51,763 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 944 transitions, 2288 flow [2022-11-16 12:13:51,763 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) [2022-11-16 12:13:51,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:51,764 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] [2022-11-16 12:13:51,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:13:51,764 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:51,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1756507324, now seen corresponding path program 1 times [2022-11-16 12:13:51,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:51,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190169884] [2022-11-16 12:13:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-16 12:13:51,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:51,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190169884] [2022-11-16 12:13:51,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190169884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:51,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:51,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:13:51,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584412877] [2022-11-16 12:13:51,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:51,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:13:51,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:51,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:13:51,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:13:51,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-16 12:13:51,949 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) [2022-11-16 12:13:51,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:51,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-16 12:13:51,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:53,793 INFO L130 PetriNetUnfolder]: 310/4127 cut-off events. [2022-11-16 12:13:53,793 INFO L131 PetriNetUnfolder]: For 238/1880 co-relation queries the response was YES. [2022-11-16 12:13:53,867 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. [2022-11-16 12:13:53,901 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 63 selfloop transitions, 6 changer transitions 0/962 dead transitions. [2022-11-16 12:13:53,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 962 transitions, 2462 flow [2022-11-16 12:13:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:13:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:13:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3591 transitions. [2022-11-16 12:13:53,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9255154639175258 [2022-11-16 12:13:53,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3591 transitions. [2022-11-16 12:13:53,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3591 transitions. [2022-11-16 12:13:53,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:53,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3591 transitions. [2022-11-16 12:13:53,914 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) [2022-11-16 12:13:53,919 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) [2022-11-16 12:13:53,920 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) [2022-11-16 12:13:53,920 INFO L175 Difference]: Start difference. First operand has 891 places, 944 transitions, 2288 flow. Second operand 4 states and 3591 transitions. [2022-11-16 12:13:53,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 962 transitions, 2462 flow [2022-11-16 12:13:53,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 962 transitions, 2448 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:13:53,943 INFO L231 Difference]: Finished difference. Result has 889 places, 942 transitions, 2274 flow [2022-11-16 12:13:53,944 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} [2022-11-16 12:13:53,945 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 23 predicate places. [2022-11-16 12:13:53,945 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 942 transitions, 2274 flow [2022-11-16 12:13:53,946 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) [2022-11-16 12:13:53,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:53,946 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] [2022-11-16 12:13:53,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:13:53,947 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:53,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1382850275, now seen corresponding path program 1 times [2022-11-16 12:13:53,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:53,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885912946] [2022-11-16 12:13:53,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:53,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-16 12:13:54,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:54,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885912946] [2022-11-16 12:13:54,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885912946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:54,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:54,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:13:54,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107629027] [2022-11-16 12:13:54,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:54,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:54,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:54,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:54,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-16 12:13:54,244 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) [2022-11-16 12:13:54,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:54,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-16 12:13:54,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:56,224 INFO L130 PetriNetUnfolder]: 355/3983 cut-off events. [2022-11-16 12:13:56,224 INFO L131 PetriNetUnfolder]: For 235/2413 co-relation queries the response was YES. [2022-11-16 12:13:56,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5074 conditions, 3983 events. 355/3983 cut-off events. For 235/2413 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 38284 event pairs, 108 based on Foata normal form. 12/3437 useless extension candidates. Maximal degree in co-relation 4614. Up to 275 conditions per place. [2022-11-16 12:13:56,361 INFO L137 encePairwiseOnDemand]: 963/970 looper letters, 51 selfloop transitions, 6 changer transitions 0/952 dead transitions. [2022-11-16 12:13:56,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 952 transitions, 2419 flow [2022-11-16 12:13:56,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:13:56,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:13:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6218 transitions. [2022-11-16 12:13:56,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9157584683357879 [2022-11-16 12:13:56,369 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6218 transitions. [2022-11-16 12:13:56,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6218 transitions. [2022-11-16 12:13:56,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:56,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6218 transitions. [2022-11-16 12:13:56,377 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) [2022-11-16 12:13:56,384 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) [2022-11-16 12:13:56,385 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) [2022-11-16 12:13:56,386 INFO L175 Difference]: Start difference. First operand has 889 places, 942 transitions, 2274 flow. Second operand 7 states and 6218 transitions. [2022-11-16 12:13:56,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 952 transitions, 2419 flow [2022-11-16 12:13:56,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 952 transitions, 2409 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:13:56,404 INFO L231 Difference]: Finished difference. Result has 892 places, 941 transitions, 2274 flow [2022-11-16 12:13:56,406 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} [2022-11-16 12:13:56,406 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 26 predicate places. [2022-11-16 12:13:56,406 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 941 transitions, 2274 flow [2022-11-16 12:13:56,407 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) [2022-11-16 12:13:56,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:56,408 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] [2022-11-16 12:13:56,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:13:56,408 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:13:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:56,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1676258872, now seen corresponding path program 1 times [2022-11-16 12:13:56,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:56,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671642668] [2022-11-16 12:13:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:56,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-16 12:13:56,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:56,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671642668] [2022-11-16 12:13:56,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671642668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:56,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:56,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:13:56,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373009756] [2022-11-16 12:13:56,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:56,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:56,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:56,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:56,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:56,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-16 12:13:56,724 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) [2022-11-16 12:13:56,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:56,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-16 12:13:56,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:00,182 INFO L130 PetriNetUnfolder]: 2551/10141 cut-off events. [2022-11-16 12:14:00,182 INFO L131 PetriNetUnfolder]: For 2156/3011 co-relation queries the response was YES. [2022-11-16 12:14:00,294 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. [2022-11-16 12:14:00,342 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 57 selfloop transitions, 7 changer transitions 0/954 dead transitions. [2022-11-16 12:14:00,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 954 transitions, 2434 flow [2022-11-16 12:14:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:14:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:14:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6225 transitions. [2022-11-16 12:14:00,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9167893961708394 [2022-11-16 12:14:00,348 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6225 transitions. [2022-11-16 12:14:00,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6225 transitions. [2022-11-16 12:14:00,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:00,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6225 transitions. [2022-11-16 12:14:00,526 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) [2022-11-16 12:14:00,535 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) [2022-11-16 12:14:00,537 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) [2022-11-16 12:14:00,537 INFO L175 Difference]: Start difference. First operand has 892 places, 941 transitions, 2274 flow. Second operand 7 states and 6225 transitions. [2022-11-16 12:14:00,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 954 transitions, 2434 flow [2022-11-16 12:14:00,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 954 transitions, 2424 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:14:00,560 INFO L231 Difference]: Finished difference. Result has 893 places, 940 transitions, 2276 flow [2022-11-16 12:14:00,562 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} [2022-11-16 12:14:00,563 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 27 predicate places. [2022-11-16 12:14:00,563 INFO L495 AbstractCegarLoop]: Abstraction has has 893 places, 940 transitions, 2276 flow [2022-11-16 12:14:00,564 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) [2022-11-16 12:14:00,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:00,565 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] [2022-11-16 12:14:00,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:14:00,565 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:14:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1708597270, now seen corresponding path program 1 times [2022-11-16 12:14:00,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:00,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961584568] [2022-11-16 12:14:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:00,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-16 12:14:00,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:00,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961584568] [2022-11-16 12:14:00,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961584568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:00,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:00,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:14:00,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10415609] [2022-11-16 12:14:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:00,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:14:00,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:14:00,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:14:00,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-16 12:14:00,808 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) [2022-11-16 12:14:00,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:00,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-16 12:14:00,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:02,767 INFO L130 PetriNetUnfolder]: 310/4268 cut-off events. [2022-11-16 12:14:02,768 INFO L131 PetriNetUnfolder]: For 171/1933 co-relation queries the response was YES. [2022-11-16 12:14:02,858 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. [2022-11-16 12:14:02,892 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 58 selfloop transitions, 6 changer transitions 0/958 dead transitions. [2022-11-16 12:14:02,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 958 transitions, 2443 flow [2022-11-16 12:14:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:14:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:14:02,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3586 transitions. [2022-11-16 12:14:02,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9242268041237114 [2022-11-16 12:14:02,896 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3586 transitions. [2022-11-16 12:14:02,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3586 transitions. [2022-11-16 12:14:02,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:02,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3586 transitions. [2022-11-16 12:14:02,901 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) [2022-11-16 12:14:02,904 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) [2022-11-16 12:14:02,905 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) [2022-11-16 12:14:02,905 INFO L175 Difference]: Start difference. First operand has 893 places, 940 transitions, 2276 flow. Second operand 4 states and 3586 transitions. [2022-11-16 12:14:02,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 958 transitions, 2443 flow [2022-11-16 12:14:02,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 888 places, 958 transitions, 2428 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:14:02,924 INFO L231 Difference]: Finished difference. Result has 889 places, 940 transitions, 2278 flow [2022-11-16 12:14:02,925 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} [2022-11-16 12:14:02,925 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 23 predicate places. [2022-11-16 12:14:02,926 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 940 transitions, 2278 flow [2022-11-16 12:14:02,926 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) [2022-11-16 12:14:02,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:02,927 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] [2022-11-16 12:14:02,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:14:02,927 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:14:02,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:02,928 INFO L85 PathProgramCache]: Analyzing trace with hash -424414583, now seen corresponding path program 1 times [2022-11-16 12:14:02,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:02,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005646617] [2022-11-16 12:14:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:02,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-16 12:14:03,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:03,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005646617] [2022-11-16 12:14:03,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005646617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:03,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:03,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:14:03,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327520454] [2022-11-16 12:14:03,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:03,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:14:03,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:03,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:14:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:14:03,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-16 12:14:03,095 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) [2022-11-16 12:14:03,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:03,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-16 12:14:03,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:07,027 INFO L130 PetriNetUnfolder]: 2816/12048 cut-off events. [2022-11-16 12:14:07,028 INFO L131 PetriNetUnfolder]: For 2787/4130 co-relation queries the response was YES. [2022-11-16 12:14:07,142 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. [2022-11-16 12:14:07,204 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 62 selfloop transitions, 8 changer transitions 0/960 dead transitions. [2022-11-16 12:14:07,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 890 places, 960 transitions, 2461 flow [2022-11-16 12:14:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:14:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:14:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3594 transitions. [2022-11-16 12:14:07,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9262886597938145 [2022-11-16 12:14:07,210 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3594 transitions. [2022-11-16 12:14:07,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3594 transitions. [2022-11-16 12:14:07,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:07,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3594 transitions. [2022-11-16 12:14:07,217 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) [2022-11-16 12:14:07,221 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) [2022-11-16 12:14:07,222 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) [2022-11-16 12:14:07,223 INFO L175 Difference]: Start difference. First operand has 889 places, 940 transitions, 2278 flow. Second operand 4 states and 3594 transitions. [2022-11-16 12:14:07,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 890 places, 960 transitions, 2461 flow [2022-11-16 12:14:07,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 960 transitions, 2457 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:14:07,245 INFO L231 Difference]: Finished difference. Result has 892 places, 942 transitions, 2321 flow [2022-11-16 12:14:07,246 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} [2022-11-16 12:14:07,247 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 26 predicate places. [2022-11-16 12:14:07,247 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 942 transitions, 2321 flow [2022-11-16 12:14:07,248 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) [2022-11-16 12:14:07,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:07,248 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] [2022-11-16 12:14:07,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:14:07,249 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-16 12:14:07,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:07,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1561329321, now seen corresponding path program 1 times [2022-11-16 12:14:07,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:07,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440543740] [2022-11-16 12:14:07,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:07,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-16 12:14:07,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:07,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440543740] [2022-11-16 12:14:07,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440543740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:07,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:07,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:14:07,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739590382] [2022-11-16 12:14:07,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:07,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:14:07,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:07,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:14:07,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:14:07,614 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-16 12:14:07,618 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) [2022-11-16 12:14:07,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:07,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-16 12:14:07,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand