./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:38:45,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:38:45,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:38:45,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:38:45,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:38:45,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:38:45,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:38:45,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:38:45,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:38:45,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:38:45,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:38:45,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:38:45,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:38:45,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:38:45,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:38:45,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:38:45,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:38:45,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:38:45,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:38:45,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:38:45,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:38:45,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:38:45,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:38:45,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:38:45,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:38:45,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:38:45,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:38:45,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:38:45,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:38:45,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:38:45,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:38:45,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:38:45,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:38:45,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:38:45,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:38:45,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:38:45,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:38:45,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:38:45,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:38:45,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:38:45,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:38:45,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:38:46,000 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:38:46,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:38:46,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:38:46,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:38:46,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:38:46,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:38:46,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:38:46,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:38:46,006 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:38:46,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:38:46,008 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:38:46,008 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:38:46,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:38:46,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:38:46,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:38:46,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:38:46,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:38:46,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:38:46,010 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:38:46,010 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:38:46,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:38:46,011 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:38:46,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:38:46,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:38:46,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:38:46,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:38:46,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:46,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:38:46,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:38:46,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:38:46,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:38:46,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:38:46,016 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:38:46,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:38:46,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:38:46,017 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_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 [2022-11-18 18:38:46,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:38:46,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:38:46,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:38:46,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:38:46,452 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:38:46,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-18 18:38:46,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/data/3fa8f93cd/f98a1b729b8a4e659c66ea9296671522/FLAGf05760a24 [2022-11-18 18:38:47,230 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:38:47,231 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-18 18:38:47,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/data/3fa8f93cd/f98a1b729b8a4e659c66ea9296671522/FLAGf05760a24 [2022-11-18 18:38:47,578 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/data/3fa8f93cd/f98a1b729b8a4e659c66ea9296671522 [2022-11-18 18:38:47,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:38:47,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:38:47,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:47,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:38:47,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:38:47,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:47" (1/1) ... [2022-11-18 18:38:47,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf3f93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:47, skipping insertion in model container [2022-11-18 18:38:47,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:47" (1/1) ... [2022-11-18 18:38:47,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:38:47,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:38:47,951 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-18 18:38:47,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:47,984 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:38:48,041 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-18 18:38:48,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:48,083 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:38:48,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48 WrapperNode [2022-11-18 18:38:48,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:48,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:48,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:38:48,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:38:48,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (1/1) ... [2022-11-18 18:38:48,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (1/1) ... [2022-11-18 18:38:48,176 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 395 [2022-11-18 18:38:48,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:48,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:38:48,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:38:48,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:38:48,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (1/1) ... [2022-11-18 18:38:48,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (1/1) ... [2022-11-18 18:38:48,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (1/1) ... [2022-11-18 18:38:48,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (1/1) ... [2022-11-18 18:38:48,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (1/1) ... [2022-11-18 18:38:48,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (1/1) ... [2022-11-18 18:38:48,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (1/1) ... [2022-11-18 18:38:48,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (1/1) ... [2022-11-18 18:38:48,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:38:48,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:38:48,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:38:48,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:38:48,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (1/1) ... [2022-11-18 18:38:48,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:48,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:48,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:38:48,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:38:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:38:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:38:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:38:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:38:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:38:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:38:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:38:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:38:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:38:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:38:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:38:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:38:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:38:48,361 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:38:48,537 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:38:48,540 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:38:49,708 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:38:49,722 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:38:49,723 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 18:38:49,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:49 BoogieIcfgContainer [2022-11-18 18:38:49,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:38:49,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:38:49,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:38:49,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:38:49,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:38:47" (1/3) ... [2022-11-18 18:38:49,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195c788b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:49, skipping insertion in model container [2022-11-18 18:38:49,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:48" (2/3) ... [2022-11-18 18:38:49,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195c788b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:49, skipping insertion in model container [2022-11-18 18:38:49,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:49" (3/3) ... [2022-11-18 18:38:49,739 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-11-18 18:38:49,751 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:38:49,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:38:49,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-11-18 18:38:49,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:38:50,011 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 18:38:50,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 583 transitions, 1182 flow [2022-11-18 18:38:50,548 INFO L130 PetriNetUnfolder]: 44/581 cut-off events. [2022-11-18 18:38:50,549 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:38:50,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 581 events. 44/581 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1854 event pairs, 0 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2022-11-18 18:38:50,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 583 transitions, 1182 flow [2022-11-18 18:38:50,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 526 places, 562 transitions, 1133 flow [2022-11-18 18:38:50,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:38:50,610 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;@57ccbad5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:38:50,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2022-11-18 18:38:50,627 INFO L130 PetriNetUnfolder]: 3/87 cut-off events. [2022-11-18 18:38:50,628 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:38:50,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:50,629 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:50,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-18 18:38:50,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:50,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1799130742, now seen corresponding path program 1 times [2022-11-18 18:38:50,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:50,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271484969] [2022-11-18 18:38:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:51,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:51,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271484969] [2022-11-18 18:38:51,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271484969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:51,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:51,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:51,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200047422] [2022-11-18 18:38:51,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:51,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:38:51,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:51,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:38:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:51,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-18 18:38:51,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 562 transitions, 1133 flow. Second operand has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:51,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:51,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-18 18:38:51,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:51,917 INFO L130 PetriNetUnfolder]: 41/1004 cut-off events. [2022-11-18 18:38:51,918 INFO L131 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2022-11-18 18:38:51,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 1004 events. 41/1004 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5132 event pairs, 0 based on Foata normal form. 52/872 useless extension candidates. Maximal degree in co-relation 590. Up to 16 conditions per place. [2022-11-18 18:38:51,956 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 22 selfloop transitions, 4 changer transitions 3/551 dead transitions. [2022-11-18 18:38:51,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 551 transitions, 1172 flow [2022-11-18 18:38:51,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:38:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:38:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2785 transitions. [2022-11-18 18:38:51,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9554030874785592 [2022-11-18 18:38:51,991 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2785 transitions. [2022-11-18 18:38:51,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2785 transitions. [2022-11-18 18:38:51,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:52,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2785 transitions. [2022-11-18 18:38:52,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 557.0) internal successors, (2785), 5 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:52,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:52,030 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:52,033 INFO L175 Difference]: Start difference. First operand has 526 places, 562 transitions, 1133 flow. Second operand 5 states and 2785 transitions. [2022-11-18 18:38:52,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 551 transitions, 1172 flow [2022-11-18 18:38:52,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 551 transitions, 1162 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:38:52,068 INFO L231 Difference]: Finished difference. Result has 530 places, 540 transitions, 1108 flow [2022-11-18 18:38:52,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1108, PETRI_PLACES=530, PETRI_TRANSITIONS=540} [2022-11-18 18:38:52,076 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 4 predicate places. [2022-11-18 18:38:52,076 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 540 transitions, 1108 flow [2022-11-18 18:38:52,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:52,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:52,079 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] [2022-11-18 18:38:52,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:38:52,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-18 18:38:52,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -183066795, now seen corresponding path program 1 times [2022-11-18 18:38:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:52,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823296422] [2022-11-18 18:38:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:52,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:52,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823296422] [2022-11-18 18:38:52,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823296422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:52,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154885616] [2022-11-18 18:38:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:52,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:52,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:52,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:52,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:38:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:52,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:38:52,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:52,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:52,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154885616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:52,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:38:52,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 18:38:52,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295881022] [2022-11-18 18:38:52,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:52,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:38:52,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:38:52,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:38:52,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-18 18:38:52,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 540 transitions, 1108 flow. Second operand has 12 states, 12 states have (on average 545.6666666666666) internal successors, (6548), 12 states have internal predecessors, (6548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:52,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:52,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-18 18:38:52,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:54,146 INFO L130 PetriNetUnfolder]: 101/2391 cut-off events. [2022-11-18 18:38:54,146 INFO L131 PetriNetUnfolder]: For 16/21 co-relation queries the response was YES. [2022-11-18 18:38:54,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 2391 events. 101/2391 cut-off events. For 16/21 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 17704 event pairs, 0 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 1932. Up to 11 conditions per place. [2022-11-18 18:38:54,235 INFO L137 encePairwiseOnDemand]: 576/583 looper letters, 43 selfloop transitions, 18 changer transitions 0/583 dead transitions. [2022-11-18 18:38:54,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 583 transitions, 1354 flow [2022-11-18 18:38:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:38:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:38:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 9838 transitions. [2022-11-18 18:38:54,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9374880884314847 [2022-11-18 18:38:54,269 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 9838 transitions. [2022-11-18 18:38:54,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 9838 transitions. [2022-11-18 18:38:54,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:54,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 9838 transitions. [2022-11-18 18:38:54,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 546.5555555555555) internal successors, (9838), 18 states have internal predecessors, (9838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:54,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 583.0) internal successors, (11077), 19 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:54,347 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 583.0) internal successors, (11077), 19 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:54,348 INFO L175 Difference]: Start difference. First operand has 530 places, 540 transitions, 1108 flow. Second operand 18 states and 9838 transitions. [2022-11-18 18:38:54,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 583 transitions, 1354 flow [2022-11-18 18:38:54,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 583 transitions, 1352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:38:54,363 INFO L231 Difference]: Finished difference. Result has 547 places, 552 transitions, 1212 flow [2022-11-18 18:38:54,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1212, PETRI_PLACES=547, PETRI_TRANSITIONS=552} [2022-11-18 18:38:54,365 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 21 predicate places. [2022-11-18 18:38:54,365 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 552 transitions, 1212 flow [2022-11-18 18:38:54,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 545.6666666666666) internal successors, (6548), 12 states have internal predecessors, (6548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:54,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:54,371 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:54,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:54,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:54,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-18 18:38:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:54,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1380102105, now seen corresponding path program 1 times [2022-11-18 18:38:54,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528059312] [2022-11-18 18:38:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:54,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:54,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:54,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528059312] [2022-11-18 18:38:54,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528059312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:54,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547271545] [2022-11-18 18:38:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:54,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:54,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:54,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:54,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:38:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:55,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:38:55,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:55,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:55,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547271545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:55,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:38:55,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:38:55,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555450118] [2022-11-18 18:38:55,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:55,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:55,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:55,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:55,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:55,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-18 18:38:55,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 552 transitions, 1212 flow. Second operand has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:55,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:55,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-18 18:38:55,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:56,259 INFO L130 PetriNetUnfolder]: 101/2387 cut-off events. [2022-11-18 18:38:56,260 INFO L131 PetriNetUnfolder]: For 52/57 co-relation queries the response was YES. [2022-11-18 18:38:56,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 2387 events. 101/2387 cut-off events. For 52/57 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 17685 event pairs, 0 based on Foata normal form. 4/1946 useless extension candidates. Maximal degree in co-relation 2000. Up to 28 conditions per place. [2022-11-18 18:38:56,333 INFO L137 encePairwiseOnDemand]: 578/583 looper letters, 23 selfloop transitions, 11 changer transitions 0/556 dead transitions. [2022-11-18 18:38:56,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 556 transitions, 1275 flow [2022-11-18 18:38:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:38:56,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:38:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3827 transitions. [2022-11-18 18:38:56,342 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9377603528546925 [2022-11-18 18:38:56,343 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3827 transitions. [2022-11-18 18:38:56,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3827 transitions. [2022-11-18 18:38:56,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:56,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3827 transitions. [2022-11-18 18:38:56,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 546.7142857142857) internal successors, (3827), 7 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:56,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:56,367 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:56,368 INFO L175 Difference]: Start difference. First operand has 547 places, 552 transitions, 1212 flow. Second operand 7 states and 3827 transitions. [2022-11-18 18:38:56,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 556 transitions, 1275 flow [2022-11-18 18:38:56,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 556 transitions, 1243 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 18:38:56,383 INFO L231 Difference]: Finished difference. Result has 543 places, 548 transitions, 1175 flow [2022-11-18 18:38:56,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1175, PETRI_PLACES=543, PETRI_TRANSITIONS=548} [2022-11-18 18:38:56,385 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 17 predicate places. [2022-11-18 18:38:56,385 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 548 transitions, 1175 flow [2022-11-18 18:38:56,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:56,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:56,387 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] [2022-11-18 18:38:56,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:56,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba99c779-ad8d-41c5-8c8a-8e966bd9e414/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:56,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-18 18:38:56,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:56,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1846906963, now seen corresponding path program 1 times [2022-11-18 18:38:56,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:56,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115019387] [2022-11-18 18:38:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:56,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:56,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:56,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115019387] [2022-11-18 18:38:56,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115019387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:56,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:56,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:38:56,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434609809] [2022-11-18 18:38:56,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:56,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:56,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:56,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:56,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 583 [2022-11-18 18:38:56,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 548 transitions, 1175 flow. Second operand has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:56,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:56,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 583 [2022-11-18 18:38:56,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:00,847 INFO L130 PetriNetUnfolder]: 1216/8132 cut-off events. [2022-11-18 18:39:00,847 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-18 18:39:01,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13156 conditions, 8132 events. 1216/8132 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 80978 event pairs, 140 based on Foata normal form. 0/6807 useless extension candidates. Maximal degree in co-relation 10521. Up to 966 conditions per place. [2022-11-18 18:39:01,284 INFO L137 encePairwiseOnDemand]: 559/583 looper letters, 195 selfloop transitions, 31 changer transitions 0/683 dead transitions. [2022-11-18 18:39:01,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 683 transitions, 1911 flow [2022-11-18 18:39:01,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:39:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:39:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4431 transitions. [2022-11-18 18:39:01,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8444825614636935 [2022-11-18 18:39:01,295 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4431 transitions. [2022-11-18 18:39:01,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4431 transitions. [2022-11-18 18:39:01,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:01,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4431 transitions. [2022-11-18 18:39:01,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 492.3333333333333) internal successors, (4431), 9 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,322 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,322 INFO L175 Difference]: Start difference. First operand has 543 places, 548 transitions, 1175 flow. Second operand 9 states and 4431 transitions. [2022-11-18 18:39:01,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 683 transitions, 1911 flow [2022-11-18 18:39:01,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 683 transitions, 1897 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:39:01,343 INFO L231 Difference]: Finished difference. Result has 553 places, 572 transitions, 1375 flow [2022-11-18 18:39:01,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=553, PETRI_TRANSITIONS=572} [2022-11-18 18:39:01,347 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 27 predicate places. [2022-11-18 18:39:01,347 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 572 transitions, 1375 flow [2022-11-18 18:39:01,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:01,349 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:01,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:39:01,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-18 18:39:01,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:01,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1419539598, now seen corresponding path program 1 times [2022-11-18 18:39:01,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:01,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358916645] [2022-11-18 18:39:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:01,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:01,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:01,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358916645] [2022-11-18 18:39:01,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358916645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:01,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:01,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:01,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414029930] [2022-11-18 18:39:01,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:01,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:39:01,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:01,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:39:01,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:39:01,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 583 [2022-11-18 18:39:01,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 572 transitions, 1375 flow. Second operand has 4 states, 4 states have (on average 464.75) internal successors, (1859), 4 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:01,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 583 [2022-11-18 18:39:01,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:06,960 INFO L130 PetriNetUnfolder]: 1701/11567 cut-off events. [2022-11-18 18:39:06,960 INFO L131 PetriNetUnfolder]: For 1339/1339 co-relation queries the response was YES. [2022-11-18 18:39:07,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19655 conditions, 11567 events. 1701/11567 cut-off events. For 1339/1339 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 125314 event pairs, 660 based on Foata normal form. 160/10107 useless extension candidates. Maximal degree in co-relation 15716. Up to 2166 conditions per place. [2022-11-18 18:39:07,274 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 126 selfloop transitions, 22 changer transitions 0/609 dead transitions. [2022-11-18 18:39:07,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 609 transitions, 1742 flow [2022-11-18 18:39:07,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:39:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:39:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1994 transitions. [2022-11-18 18:39:07,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8550600343053173 [2022-11-18 18:39:07,280 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1994 transitions. [2022-11-18 18:39:07,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1994 transitions. [2022-11-18 18:39:07,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:07,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1994 transitions. [2022-11-18 18:39:07,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 498.5) internal successors, (1994), 4 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:07,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:07,293 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:07,294 INFO L175 Difference]: Start difference. First operand has 553 places, 572 transitions, 1375 flow. Second operand 4 states and 1994 transitions. [2022-11-18 18:39:07,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 609 transitions, 1742 flow [2022-11-18 18:39:07,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 609 transitions, 1740 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:39:07,318 INFO L231 Difference]: Finished difference. Result has 554 places, 578 transitions, 1509 flow [2022-11-18 18:39:07,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1509, PETRI_PLACES=554, PETRI_TRANSITIONS=578} [2022-11-18 18:39:07,323 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 28 predicate places. [2022-11-18 18:39:07,324 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 578 transitions, 1509 flow [2022-11-18 18:39:07,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 464.75) internal successors, (1859), 4 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:07,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:07,325 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:07,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:39:07,326 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-18 18:39:07,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1734405876, now seen corresponding path program 1 times [2022-11-18 18:39:07,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:07,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818196755] [2022-11-18 18:39:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:07,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:07,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818196755] [2022-11-18 18:39:07,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818196755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:07,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:07,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:39:07,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239512186] [2022-11-18 18:39:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:07,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:39:07,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:07,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:39:07,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:39:07,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 583 [2022-11-18 18:39:07,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 578 transitions, 1509 flow. Second operand has 9 states, 9 states have (on average 514.7777777777778) internal successors, (4633), 9 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:07,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:07,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 583 [2022-11-18 18:39:07,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:18,540 INFO L130 PetriNetUnfolder]: 2588/46589 cut-off events. [2022-11-18 18:39:18,540 INFO L131 PetriNetUnfolder]: For 1081/1101 co-relation queries the response was YES. [2022-11-18 18:39:19,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49880 conditions, 46589 events. 2588/46589 cut-off events. For 1081/1101 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 666236 event pairs, 443 based on Foata normal form. 0/37201 useless extension candidates. Maximal degree in co-relation 48628. Up to 987 conditions per place. [2022-11-18 18:39:19,266 INFO L137 encePairwiseOnDemand]: 571/583 looper letters, 51 selfloop transitions, 11 changer transitions 0/594 dead transitions. [2022-11-18 18:39:19,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 594 transitions, 1671 flow [2022-11-18 18:39:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:39:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:39:19,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5689 transitions. [2022-11-18 18:39:19,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8871043193513176 [2022-11-18 18:39:19,282 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5689 transitions. [2022-11-18 18:39:19,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5689 transitions. [2022-11-18 18:39:19,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:19,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5689 transitions. [2022-11-18 18:39:19,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 517.1818181818181) internal successors, (5689), 11 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:19,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:19,318 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:19,318 INFO L175 Difference]: Start difference. First operand has 554 places, 578 transitions, 1509 flow. Second operand 11 states and 5689 transitions. [2022-11-18 18:39:19,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 594 transitions, 1671 flow [2022-11-18 18:39:19,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 594 transitions, 1671 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:39:19,342 INFO L231 Difference]: Finished difference. Result has 570 places, 583 transitions, 1567 flow [2022-11-18 18:39:19,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1567, PETRI_PLACES=570, PETRI_TRANSITIONS=583} [2022-11-18 18:39:19,347 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 44 predicate places. [2022-11-18 18:39:19,347 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 583 transitions, 1567 flow [2022-11-18 18:39:19,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 514.7777777777778) internal successors, (4633), 9 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:19,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:19,350 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] [2022-11-18 18:39:19,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:39:19,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-18 18:39:19,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:19,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1421579108, now seen corresponding path program 1 times [2022-11-18 18:39:19,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:19,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764685406] [2022-11-18 18:39:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:19,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:19,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:19,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764685406] [2022-11-18 18:39:19,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764685406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:19,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:19,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:39:19,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759699649] [2022-11-18 18:39:19,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:19,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:39:19,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:39:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:39:19,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 583 [2022-11-18 18:39:19,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 583 transitions, 1567 flow. Second operand has 6 states, 6 states have (on average 469.1666666666667) internal successors, (2815), 6 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:19,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:19,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 583 [2022-11-18 18:39:19,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:31,084 INFO L130 PetriNetUnfolder]: 4883/23819 cut-off events. [2022-11-18 18:39:31,085 INFO L131 PetriNetUnfolder]: For 4764/4786 co-relation queries the response was YES. [2022-11-18 18:39:31,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34762 conditions, 23819 events. 4883/23819 cut-off events. For 4764/4786 co-relation queries the response was YES. Maximal size of possible extension queue 2497. Compared 353359 event pairs, 616 based on Foata normal form. 0/17065 useless extension candidates. Maximal degree in co-relation 31352. Up to 4180 conditions per place. [2022-11-18 18:39:31,971 INFO L137 encePairwiseOnDemand]: 559/583 looper letters, 194 selfloop transitions, 31 changer transitions 0/716 dead transitions. [2022-11-18 18:39:31,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 716 transitions, 2289 flow [2022-11-18 18:39:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:39:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:39:31,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4429 transitions. [2022-11-18 18:39:31,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441013912712025 [2022-11-18 18:39:31,983 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4429 transitions. [2022-11-18 18:39:31,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4429 transitions. [2022-11-18 18:39:31,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:31,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4429 transitions. [2022-11-18 18:39:31,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 492.1111111111111) internal successors, (4429), 9 states have internal predecessors, (4429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:32,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:32,009 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:32,009 INFO L175 Difference]: Start difference. First operand has 570 places, 583 transitions, 1567 flow. Second operand 9 states and 4429 transitions. [2022-11-18 18:39:32,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 716 transitions, 2289 flow [2022-11-18 18:39:32,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 716 transitions, 2282 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:39:32,032 INFO L231 Difference]: Finished difference. Result has 582 places, 607 transitions, 1774 flow [2022-11-18 18:39:32,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1774, PETRI_PLACES=582, PETRI_TRANSITIONS=607} [2022-11-18 18:39:32,034 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 56 predicate places. [2022-11-18 18:39:32,035 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 607 transitions, 1774 flow [2022-11-18 18:39:32,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 469.1666666666667) internal successors, (2815), 6 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:32,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:32,037 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] [2022-11-18 18:39:32,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:39:32,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-18 18:39:32,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:32,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1119277759, now seen corresponding path program 1 times [2022-11-18 18:39:32,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:32,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926581475] [2022-11-18 18:39:32,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:32,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:32,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:32,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926581475] [2022-11-18 18:39:32,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926581475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:32,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:32,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:32,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115684374] [2022-11-18 18:39:32,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:32,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:39:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:39:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:39:32,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 583 [2022-11-18 18:39:32,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 607 transitions, 1774 flow. Second operand has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:32,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:32,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 583 [2022-11-18 18:39:32,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:49,967 INFO L130 PetriNetUnfolder]: 6847/33721 cut-off events. [2022-11-18 18:39:49,967 INFO L131 PetriNetUnfolder]: For 9941/9963 co-relation queries the response was YES. [2022-11-18 18:39:50,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51474 conditions, 33721 events. 6847/33721 cut-off events. For 9941/9963 co-relation queries the response was YES. Maximal size of possible extension queue 3520. Compared 524994 event pairs, 572 based on Foata normal form. 432/25152 useless extension candidates. Maximal degree in co-relation 46272. Up to 6933 conditions per place. [2022-11-18 18:39:51,117 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 125 selfloop transitions, 22 changer transitions 0/643 dead transitions. [2022-11-18 18:39:51,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 643 transitions, 2134 flow [2022-11-18 18:39:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:39:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:39:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1993 transitions. [2022-11-18 18:39:51,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8546312178387651 [2022-11-18 18:39:51,124 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1993 transitions. [2022-11-18 18:39:51,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1993 transitions. [2022-11-18 18:39:51,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:51,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1993 transitions. [2022-11-18 18:39:51,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 498.25) internal successors, (1993), 4 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:51,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:51,135 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:51,136 INFO L175 Difference]: Start difference. First operand has 582 places, 607 transitions, 1774 flow. Second operand 4 states and 1993 transitions. [2022-11-18 18:39:51,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 643 transitions, 2134 flow [2022-11-18 18:39:51,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 643 transitions, 2132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:39:51,191 INFO L231 Difference]: Finished difference. Result has 583 places, 613 transitions, 1908 flow [2022-11-18 18:39:51,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1908, PETRI_PLACES=583, PETRI_TRANSITIONS=613} [2022-11-18 18:39:51,193 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 57 predicate places. [2022-11-18 18:39:51,193 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 613 transitions, 1908 flow [2022-11-18 18:39:51,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:51,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:51,195 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] [2022-11-18 18:39:51,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:39:51,195 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-18 18:39:51,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:51,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2034667715, now seen corresponding path program 1 times [2022-11-18 18:39:51,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:51,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378324467] [2022-11-18 18:39:51,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:51,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:51,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:51,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:51,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378324467] [2022-11-18 18:39:51,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378324467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:51,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:51,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:39:51,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187816659] [2022-11-18 18:39:51,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:51,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:39:51,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:51,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:39:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:39:51,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 583 [2022-11-18 18:39:51,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 613 transitions, 1908 flow. Second operand has 9 states, 9 states have (on average 514.8888888888889) internal successors, (4634), 9 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:51,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:51,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 583 [2022-11-18 18:39:51,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand