./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/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_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/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_f30a7adc-6e10-4626-b263-0806b5af305f/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 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --- 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 20:23:16,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:23:16,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:23:16,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:23:16,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:23:16,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:23:16,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:23:16,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:23:16,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:23:16,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:23:16,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:23:16,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:23:16,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:23:16,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:23:16,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:23:16,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:23:16,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:23:16,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:23:16,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:23:16,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:23:16,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:23:16,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:23:16,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:23:16,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:23:16,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:23:16,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:23:16,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:23:16,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:23:16,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:23:16,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:23:16,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:23:16,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:23:16,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:23:16,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:23:16,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:23:16,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:23:16,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:23:16,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:23:16,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:23:16,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:23:16,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:23:16,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:23:16,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:23:16,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:23:16,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:23:16,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:23:16,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:23:16,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:23:16,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:23:16,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:23:16,297 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:23:16,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:23:16,299 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:23:16,299 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:23:16,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:23:16,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:23:16,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:23:16,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:23:16,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:23:16,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:23:16,300 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:23:16,301 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:23:16,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:23:16,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:23:16,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:23:16,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:23:16,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:23:16,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:23:16,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:23:16,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:23:16,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:23:16,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:23:16,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:23:16,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:23:16,305 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:23:16,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:23:16,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:23:16,305 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_f30a7adc-6e10-4626-b263-0806b5af305f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b [2022-11-18 20:23:16,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:23:16,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:23:16,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:23:16,651 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:23:16,652 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:23:16,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-18 20:23:16,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/data/6bf5b253c/17189b98f05948fea81afca997b151d9/FLAGac92e4868 [2022-11-18 20:23:17,178 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:23:17,178 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-18 20:23:17,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/data/6bf5b253c/17189b98f05948fea81afca997b151d9/FLAGac92e4868 [2022-11-18 20:23:17,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/data/6bf5b253c/17189b98f05948fea81afca997b151d9 [2022-11-18 20:23:17,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:23:17,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:23:17,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:23:17,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:23:17,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:23:17,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7093535e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17, skipping insertion in model container [2022-11-18 20:23:17,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:23:17,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:23:17,796 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_f30a7adc-6e10-4626-b263-0806b5af305f/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-18 20:23:17,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:23:17,811 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:23:17,836 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_f30a7adc-6e10-4626-b263-0806b5af305f/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-18 20:23:17,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:23:17,854 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:23:17,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17 WrapperNode [2022-11-18 20:23:17,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:23:17,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:23:17,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:23:17,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:23:17,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,899 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 325 [2022-11-18 20:23:17,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:23:17,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:23:17,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:23:17,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:23:17,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,930 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:23:17,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:23:17,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:23:17,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:23:17,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (1/1) ... [2022-11-18 20:23:17,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:23:17,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:17,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:23:18,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:23:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:23:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:23:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:23:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:23:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:23:18,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:23:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:23:18,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:23:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:23:18,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:23:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:23:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:23:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:23:18,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:23:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:23:18,051 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 20:23:18,207 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:23:18,215 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:23:18,801 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:23:18,815 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:23:18,815 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:23:18,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:23:18 BoogieIcfgContainer [2022-11-18 20:23:18,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:23:18,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:23:18,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:23:18,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:23:18,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:23:17" (1/3) ... [2022-11-18 20:23:18,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da6a6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:23:18, skipping insertion in model container [2022-11-18 20:23:18,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:17" (2/3) ... [2022-11-18 20:23:18,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da6a6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:23:18, skipping insertion in model container [2022-11-18 20:23:18,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:23:18" (3/3) ... [2022-11-18 20:23:18,828 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2022-11-18 20:23:18,836 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:23:18,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:23:18,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-18 20:23:18,847 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:23:19,083 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:23:19,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 445 transitions, 914 flow [2022-11-18 20:23:19,413 INFO L130 PetriNetUnfolder]: 34/442 cut-off events. [2022-11-18 20:23:19,414 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:23:19,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 442 events. 34/442 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 941 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 336. Up to 2 conditions per place. [2022-11-18 20:23:19,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 445 transitions, 914 flow [2022-11-18 20:23:19,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 421 transitions, 857 flow [2022-11-18 20:23:19,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:23:19,467 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;@3b922ede, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:23:19,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2022-11-18 20:23:19,478 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-18 20:23:19,479 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:23:19,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:19,480 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] [2022-11-18 20:23:19,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:19,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:19,487 INFO L85 PathProgramCache]: Analyzing trace with hash 343321623, now seen corresponding path program 1 times [2022-11-18 20:23:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:19,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287924427] [2022-11-18 20:23:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:19,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:19,878 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 20:23:19,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:19,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287924427] [2022-11-18 20:23:19,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287924427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:19,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:19,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:19,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074347632] [2022-11-18 20:23:19,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:19,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:19,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:19,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:19,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-18 20:23:19,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 421 transitions, 857 flow. Second operand has 4 states, 4 states have (on average 381.5) internal successors, (1526), 4 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:19,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:19,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-18 20:23:19,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:20,346 INFO L130 PetriNetUnfolder]: 23/709 cut-off events. [2022-11-18 20:23:20,346 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 20:23:20,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 709 events. 23/709 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2748 event pairs, 0 based on Foata normal form. 52/659 useless extension candidates. Maximal degree in co-relation 613. Up to 44 conditions per place. [2022-11-18 20:23:20,362 INFO L137 encePairwiseOnDemand]: 404/445 looper letters, 58 selfloop transitions, 14 changer transitions 6/431 dead transitions. [2022-11-18 20:23:20,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 431 transitions, 1036 flow [2022-11-18 20:23:20,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:20,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:20,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2014 transitions. [2022-11-18 20:23:20,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9051685393258427 [2022-11-18 20:23:20,392 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2014 transitions. [2022-11-18 20:23:20,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2014 transitions. [2022-11-18 20:23:20,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:20,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2014 transitions. [2022-11-18 20:23:20,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 402.8) internal successors, (2014), 5 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:20,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:20,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:20,442 INFO L175 Difference]: Start difference. First operand has 398 places, 421 transitions, 857 flow. Second operand 5 states and 2014 transitions. [2022-11-18 20:23:20,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 431 transitions, 1036 flow [2022-11-18 20:23:20,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 431 transitions, 1018 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:23:20,456 INFO L231 Difference]: Finished difference. Result has 400 places, 405 transitions, 898 flow [2022-11-18 20:23:20,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=898, PETRI_PLACES=400, PETRI_TRANSITIONS=405} [2022-11-18 20:23:20,462 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 2 predicate places. [2022-11-18 20:23:20,463 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 405 transitions, 898 flow [2022-11-18 20:23:20,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 381.5) internal successors, (1526), 4 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:20,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:20,464 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] [2022-11-18 20:23:20,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:23:20,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1919962258, now seen corresponding path program 1 times [2022-11-18 20:23:20,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:20,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437366781] [2022-11-18 20:23:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:20,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,682 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 20:23:20,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:20,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437366781] [2022-11-18 20:23:20,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437366781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992699982] [2022-11-18 20:23:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:20,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:20,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:20,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:20,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:23:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:23:20,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:20,879 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 20:23:20,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:20,940 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 20:23:20,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992699982] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:23:20,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:23:20,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:23:20,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248159247] [2022-11-18 20:23:20,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:23:20,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:23:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:20,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:23:20,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:23:20,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-18 20:23:20,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 405 transitions, 898 flow. Second operand has 12 states, 12 states have (on average 382.6666666666667) internal successors, (4592), 12 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:20,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:20,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-18 20:23:20,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:21,978 INFO L130 PetriNetUnfolder]: 56/1636 cut-off events. [2022-11-18 20:23:21,978 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 20:23:21,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 1636 events. 56/1636 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 10021 event pairs, 0 based on Foata normal form. 9/1420 useless extension candidates. Maximal degree in co-relation 1176. Up to 35 conditions per place. [2022-11-18 20:23:22,009 INFO L137 encePairwiseOnDemand]: 422/445 looper letters, 109 selfloop transitions, 62 changer transitions 0/524 dead transitions. [2022-11-18 20:23:22,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 524 transitions, 1580 flow [2022-11-18 20:23:22,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:23:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:23:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7020 transitions. [2022-11-18 20:23:22,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8764044943820225 [2022-11-18 20:23:22,023 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7020 transitions. [2022-11-18 20:23:22,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7020 transitions. [2022-11-18 20:23:22,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:22,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7020 transitions. [2022-11-18 20:23:22,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 390.0) internal successors, (7020), 18 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:22,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 445.0) internal successors, (8455), 19 states have internal predecessors, (8455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:22,063 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 445.0) internal successors, (8455), 19 states have internal predecessors, (8455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:22,064 INFO L175 Difference]: Start difference. First operand has 400 places, 405 transitions, 898 flow. Second operand 18 states and 7020 transitions. [2022-11-18 20:23:22,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 524 transitions, 1580 flow [2022-11-18 20:23:22,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 524 transitions, 1572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:23:22,075 INFO L231 Difference]: Finished difference. Result has 414 places, 447 transitions, 1260 flow [2022-11-18 20:23:22,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1260, PETRI_PLACES=414, PETRI_TRANSITIONS=447} [2022-11-18 20:23:22,077 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 16 predicate places. [2022-11-18 20:23:22,077 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 447 transitions, 1260 flow [2022-11-18 20:23:22,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 382.6666666666667) internal successors, (4592), 12 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:22,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:22,080 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] [2022-11-18 20:23:22,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:22,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:22,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:22,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:22,287 INFO L85 PathProgramCache]: Analyzing trace with hash -610711131, now seen corresponding path program 1 times [2022-11-18 20:23:22,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:22,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683291546] [2022-11-18 20:23:22,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:22,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,507 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 20:23:22,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:22,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683291546] [2022-11-18 20:23:22,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683291546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:22,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062354297] [2022-11-18 20:23:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:22,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:22,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:22,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:22,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:23:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:23:22,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:22,720 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 20:23:22,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:22,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062354297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:22,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:22,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:23:22,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93083912] [2022-11-18 20:23:22,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:22,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:22,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:22,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:22,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:23:22,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-18 20:23:22,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 447 transitions, 1260 flow. Second operand has 6 states, 6 states have (on average 382.3333333333333) internal successors, (2294), 6 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:22,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:22,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-18 20:23:22,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:23,299 INFO L130 PetriNetUnfolder]: 56/1624 cut-off events. [2022-11-18 20:23:23,300 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-18 20:23:23,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 1624 events. 56/1624 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9962 event pairs, 0 based on Foata normal form. 12/1411 useless extension candidates. Maximal degree in co-relation 1529. Up to 68 conditions per place. [2022-11-18 20:23:23,333 INFO L137 encePairwiseOnDemand]: 428/445 looper letters, 59 selfloop transitions, 43 changer transitions 0/455 dead transitions. [2022-11-18 20:23:23,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 455 transitions, 1435 flow [2022-11-18 20:23:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:23:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:23:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2732 transitions. [2022-11-18 20:23:23,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8770465489566613 [2022-11-18 20:23:23,339 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2732 transitions. [2022-11-18 20:23:23,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2732 transitions. [2022-11-18 20:23:23,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:23,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2732 transitions. [2022-11-18 20:23:23,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 390.2857142857143) internal successors, (2732), 7 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:23,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:23,354 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:23,354 INFO L175 Difference]: Start difference. First operand has 414 places, 447 transitions, 1260 flow. Second operand 7 states and 2732 transitions. [2022-11-18 20:23:23,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 455 transitions, 1435 flow [2022-11-18 20:23:23,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 455 transitions, 1319 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 20:23:23,367 INFO L231 Difference]: Finished difference. Result has 408 places, 435 transitions, 1149 flow [2022-11-18 20:23:23,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1149, PETRI_PLACES=408, PETRI_TRANSITIONS=435} [2022-11-18 20:23:23,368 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 10 predicate places. [2022-11-18 20:23:23,369 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 435 transitions, 1149 flow [2022-11-18 20:23:23,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 382.3333333333333) internal successors, (2294), 6 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:23,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:23,370 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:23,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:23:23,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:23,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1984722729, now seen corresponding path program 2 times [2022-11-18 20:23:23,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:23,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439826462] [2022-11-18 20:23:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:23,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:23,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439826462] [2022-11-18 20:23:23,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439826462] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:23,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033425276] [2022-11-18 20:23:23,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:23:23,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:23,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:23,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:23,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:23:24,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:23:24,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:23:24,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:23:24,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:23:24,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:23:24,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033425276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:23:24,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:23:24,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-18 20:23:24,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479196863] [2022-11-18 20:23:24,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:23:24,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:23:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:24,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:23:24,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:23:24,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 445 [2022-11-18 20:23:24,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 435 transitions, 1149 flow. Second operand has 18 states, 18 states have (on average 369.0) internal successors, (6642), 18 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:24,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:24,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 445 [2022-11-18 20:23:24,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:25,448 INFO L130 PetriNetUnfolder]: 67/1909 cut-off events. [2022-11-18 20:23:25,448 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-11-18 20:23:25,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1909 events. 67/1909 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 12368 event pairs, 0 based on Foata normal form. 3/1642 useless extension candidates. Maximal degree in co-relation 1541. Up to 22 conditions per place. [2022-11-18 20:23:25,490 INFO L137 encePairwiseOnDemand]: 421/445 looper letters, 130 selfloop transitions, 67 changer transitions 0/535 dead transitions. [2022-11-18 20:23:25,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 535 transitions, 1790 flow [2022-11-18 20:23:25,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:23:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 20:23:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 7500 transitions. [2022-11-18 20:23:25,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8426966292134831 [2022-11-18 20:23:25,564 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 7500 transitions. [2022-11-18 20:23:25,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 7500 transitions. [2022-11-18 20:23:25,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:25,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 7500 transitions. [2022-11-18 20:23:25,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 375.0) internal successors, (7500), 20 states have internal predecessors, (7500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:25,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 445.0) internal successors, (9345), 21 states have internal predecessors, (9345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:25,604 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 445.0) internal successors, (9345), 21 states have internal predecessors, (9345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:25,604 INFO L175 Difference]: Start difference. First operand has 408 places, 435 transitions, 1149 flow. Second operand 20 states and 7500 transitions. [2022-11-18 20:23:25,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 535 transitions, 1790 flow [2022-11-18 20:23:25,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 535 transitions, 1707 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:23:25,615 INFO L231 Difference]: Finished difference. Result has 416 places, 440 transitions, 1223 flow [2022-11-18 20:23:25,616 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1223, PETRI_PLACES=416, PETRI_TRANSITIONS=440} [2022-11-18 20:23:25,617 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 18 predicate places. [2022-11-18 20:23:25,617 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 440 transitions, 1223 flow [2022-11-18 20:23:25,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 369.0) internal successors, (6642), 18 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:25,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:25,619 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:25,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:25,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:25,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1388926259, now seen corresponding path program 1 times [2022-11-18 20:23:25,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:25,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093212359] [2022-11-18 20:23:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:25,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,951 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 20:23:25,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:25,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093212359] [2022-11-18 20:23:25,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093212359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:25,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:25,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:25,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617755556] [2022-11-18 20:23:25,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:25,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:23:25,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:25,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:23:25,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:23:25,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-18 20:23:25,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 440 transitions, 1223 flow. Second operand has 5 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:25,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:25,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-18 20:23:25,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:26,482 INFO L130 PetriNetUnfolder]: 56/1627 cut-off events. [2022-11-18 20:23:26,482 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-11-18 20:23:26,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 1627 events. 56/1627 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9645 event pairs, 0 based on Foata normal form. 3/1420 useless extension candidates. Maximal degree in co-relation 292. Up to 116 conditions per place. [2022-11-18 20:23:26,514 INFO L137 encePairwiseOnDemand]: 430/445 looper letters, 62 selfloop transitions, 20 changer transitions 0/444 dead transitions. [2022-11-18 20:23:26,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 444 transitions, 1391 flow [2022-11-18 20:23:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1956 transitions. [2022-11-18 20:23:26,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791011235955056 [2022-11-18 20:23:26,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1956 transitions. [2022-11-18 20:23:26,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1956 transitions. [2022-11-18 20:23:26,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:26,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1956 transitions. [2022-11-18 20:23:26,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 391.2) internal successors, (1956), 5 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:26,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:26,531 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:26,531 INFO L175 Difference]: Start difference. First operand has 416 places, 440 transitions, 1223 flow. Second operand 5 states and 1956 transitions. [2022-11-18 20:23:26,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 444 transitions, 1391 flow [2022-11-18 20:23:26,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 444 transitions, 1247 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-18 20:23:26,541 INFO L231 Difference]: Finished difference. Result has 406 places, 438 transitions, 1117 flow [2022-11-18 20:23:26,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1117, PETRI_PLACES=406, PETRI_TRANSITIONS=438} [2022-11-18 20:23:26,544 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 8 predicate places. [2022-11-18 20:23:26,545 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 438 transitions, 1117 flow [2022-11-18 20:23:26,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:26,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:26,546 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:26,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:23:26,546 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:26,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:26,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1925955083, now seen corresponding path program 1 times [2022-11-18 20:23:26,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:26,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721781350] [2022-11-18 20:23:26,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:26,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:23:26,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:26,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721781350] [2022-11-18 20:23:26,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721781350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:26,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817271461] [2022-11-18 20:23:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:26,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:26,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:26,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:26,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:23:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:26,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:23:26,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:23:27,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:23:27,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817271461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:23:27,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:23:27,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:23:27,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764141708] [2022-11-18 20:23:27,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:23:27,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:23:27,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:27,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:23:27,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:23:27,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 445 [2022-11-18 20:23:27,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 438 transitions, 1117 flow. Second operand has 15 states, 15 states have (on average 369.6666666666667) internal successors, (5545), 15 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:27,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:27,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 445 [2022-11-18 20:23:27,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:27,873 INFO L130 PetriNetUnfolder]: 34/1063 cut-off events. [2022-11-18 20:23:27,873 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-18 20:23:27,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 1063 events. 34/1063 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4789 event pairs, 0 based on Foata normal form. 6/943 useless extension candidates. Maximal degree in co-relation 915. Up to 60 conditions per place. [2022-11-18 20:23:27,902 INFO L137 encePairwiseOnDemand]: 421/445 looper letters, 77 selfloop transitions, 46 changer transitions 0/461 dead transitions. [2022-11-18 20:23:27,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 461 transitions, 1419 flow [2022-11-18 20:23:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:23:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:23:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4116 transitions. [2022-11-18 20:23:27,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8408580183861083 [2022-11-18 20:23:27,911 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4116 transitions. [2022-11-18 20:23:27,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4116 transitions. [2022-11-18 20:23:27,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:27,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4116 transitions. [2022-11-18 20:23:27,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 374.1818181818182) internal successors, (4116), 11 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:27,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 445.0) internal successors, (5340), 12 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:27,932 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 445.0) internal successors, (5340), 12 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:27,932 INFO L175 Difference]: Start difference. First operand has 406 places, 438 transitions, 1117 flow. Second operand 11 states and 4116 transitions. [2022-11-18 20:23:27,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 461 transitions, 1419 flow [2022-11-18 20:23:27,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 461 transitions, 1387 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:23:27,942 INFO L231 Difference]: Finished difference. Result has 415 places, 437 transitions, 1230 flow [2022-11-18 20:23:27,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1230, PETRI_PLACES=415, PETRI_TRANSITIONS=437} [2022-11-18 20:23:27,945 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 17 predicate places. [2022-11-18 20:23:27,945 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 437 transitions, 1230 flow [2022-11-18 20:23:27,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 369.6666666666667) internal successors, (5545), 15 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:27,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:27,948 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:27,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:28,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:23:28,154 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:28,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash 253482805, now seen corresponding path program 2 times [2022-11-18 20:23:28,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:28,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661184886] [2022-11-18 20:23:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:28,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 20:23:28,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:28,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661184886] [2022-11-18 20:23:28,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661184886] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:28,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042159307] [2022-11-18 20:23:28,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:23:28,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:28,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:28,550 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:28,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:23:28,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:23:28,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:23:28,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:23:28,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 20:23:28,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 20:23:29,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042159307] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:23:29,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:23:29,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-18 20:23:29,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751118070] [2022-11-18 20:23:29,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:23:29,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:23:29,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:29,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:23:29,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:23:29,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 445 [2022-11-18 20:23:29,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 437 transitions, 1230 flow. Second operand has 22 states, 22 states have (on average 371.72727272727275) internal successors, (8178), 22 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:29,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:29,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 445 [2022-11-18 20:23:29,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:29,780 INFO L130 PetriNetUnfolder]: 12/499 cut-off events. [2022-11-18 20:23:29,780 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-18 20:23:29,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 499 events. 12/499 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 802 event pairs, 0 based on Foata normal form. 6/463 useless extension candidates. Maximal degree in co-relation 281. Up to 28 conditions per place. [2022-11-18 20:23:29,787 INFO L137 encePairwiseOnDemand]: 421/445 looper letters, 86 selfloop transitions, 51 changer transitions 0/475 dead transitions. [2022-11-18 20:23:29,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 475 transitions, 1620 flow [2022-11-18 20:23:29,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:23:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:23:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6348 transitions. [2022-11-18 20:23:29,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8391275611368143 [2022-11-18 20:23:29,800 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6348 transitions. [2022-11-18 20:23:29,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6348 transitions. [2022-11-18 20:23:29,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:29,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6348 transitions. [2022-11-18 20:23:29,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 373.4117647058824) internal successors, (6348), 17 states have internal predecessors, (6348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:29,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 445.0) internal successors, (8010), 18 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:29,833 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 445.0) internal successors, (8010), 18 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:29,834 INFO L175 Difference]: Start difference. First operand has 415 places, 437 transitions, 1230 flow. Second operand 17 states and 6348 transitions. [2022-11-18 20:23:29,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 475 transitions, 1620 flow [2022-11-18 20:23:29,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 475 transitions, 1538 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-18 20:23:29,845 INFO L231 Difference]: Finished difference. Result has 424 places, 433 transitions, 1264 flow [2022-11-18 20:23:29,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1264, PETRI_PLACES=424, PETRI_TRANSITIONS=433} [2022-11-18 20:23:29,846 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 26 predicate places. [2022-11-18 20:23:29,846 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 433 transitions, 1264 flow [2022-11-18 20:23:29,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 371.72727272727275) internal successors, (8178), 22 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:29,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:29,850 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:29,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:30,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:30,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:23:30,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:30,057 INFO L85 PathProgramCache]: Analyzing trace with hash 804793461, now seen corresponding path program 3 times [2022-11-18 20:23:30,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:30,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610258988] [2022-11-18 20:23:30,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:30,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 27 proven. 187 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:23:35,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:35,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610258988] [2022-11-18 20:23:35,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610258988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:35,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270104095] [2022-11-18 20:23:35,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:23:35,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:35,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:35,102 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:35,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:23:35,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:23:35,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:23:35,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-18 20:23:35,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:36,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:23:36,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:23:36,696 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 20:23:36,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2022-11-18 20:23:37,107 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 20:23:37,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-18 20:23:37,506 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 20:23:37,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-18 20:23:37,858 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 20:23:37,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-18 20:23:38,656 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:23:38,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:23:38,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:38,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:39,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:39,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:39,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:39,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:23:39,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:23:39,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:23:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 37 proven. 124 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-18 20:23:39,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:39,988 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_317 (Array Int Int)) (v_ArrVal_316 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_316) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_317) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-18 20:24:15,085 INFO L321 Elim1Store]: treesize reduction 280, result has 34.1 percent of original size [2022-11-18 20:24:15,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 158 [2022-11-18 20:24:15,171 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:24:15,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 246 treesize of output 318 [2022-11-18 20:24:15,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2022-11-18 20:24:15,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2022-11-18 20:24:18,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:24:18,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2022-11-18 20:24:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 124 trivial. 29 not checked. [2022-11-18 20:24:19,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270104095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:24:19,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:24:19,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 100 [2022-11-18 20:24:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407505878] [2022-11-18 20:24:19,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:24:19,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-11-18 20:24:19,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-11-18 20:24:19,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=650, Invalid=9186, Unknown=68, NotChecked=196, Total=10100 [2022-11-18 20:24:19,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 445 [2022-11-18 20:24:19,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 433 transitions, 1264 flow. Second operand has 101 states, 101 states have (on average 293.1485148514852) internal successors, (29608), 101 states have internal predecessors, (29608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:19,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:19,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 445 [2022-11-18 20:24:19,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:43,398 INFO L130 PetriNetUnfolder]: 5894/31397 cut-off events. [2022-11-18 20:24:43,399 INFO L131 PetriNetUnfolder]: For 197/563 co-relation queries the response was YES. [2022-11-18 20:24:43,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39875 conditions, 31397 events. 5894/31397 cut-off events. For 197/563 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 434299 event pairs, 1390 based on Foata normal form. 4/25233 useless extension candidates. Maximal degree in co-relation 39234. Up to 1864 conditions per place. [2022-11-18 20:24:44,029 INFO L137 encePairwiseOnDemand]: 394/445 looper letters, 331 selfloop transitions, 97 changer transitions 0/694 dead transitions. [2022-11-18 20:24:44,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 694 transitions, 2698 flow [2022-11-18 20:24:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-18 20:24:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-11-18 20:24:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 20930 transitions. [2022-11-18 20:24:44,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6624465896502612 [2022-11-18 20:24:44,076 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 20930 transitions. [2022-11-18 20:24:44,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 20930 transitions. [2022-11-18 20:24:44,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:44,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 20930 transitions. [2022-11-18 20:24:44,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 294.7887323943662) internal successors, (20930), 71 states have internal predecessors, (20930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:44,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 445.0) internal successors, (32040), 72 states have internal predecessors, (32040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:44,206 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 445.0) internal successors, (32040), 72 states have internal predecessors, (32040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:44,206 INFO L175 Difference]: Start difference. First operand has 424 places, 433 transitions, 1264 flow. Second operand 71 states and 20930 transitions. [2022-11-18 20:24:44,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 694 transitions, 2698 flow [2022-11-18 20:24:44,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 694 transitions, 2596 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-18 20:24:44,227 INFO L231 Difference]: Finished difference. Result has 502 places, 473 transitions, 1600 flow [2022-11-18 20:24:44,228 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=1600, PETRI_PLACES=502, PETRI_TRANSITIONS=473} [2022-11-18 20:24:44,231 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 104 predicate places. [2022-11-18 20:24:44,231 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 473 transitions, 1600 flow [2022-11-18 20:24:44,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 293.1485148514852) internal successors, (29608), 101 states have internal predecessors, (29608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:44,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:44,243 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:44,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:44,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:44,453 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:24:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:44,454 INFO L85 PathProgramCache]: Analyzing trace with hash -821205388, now seen corresponding path program 1 times [2022-11-18 20:24:44,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:44,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802589723] [2022-11-18 20:24:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:44,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-18 20:24:44,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:44,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802589723] [2022-11-18 20:24:44,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802589723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:44,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:44,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:44,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679873143] [2022-11-18 20:24:44,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:44,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:44,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:44,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:44,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 445 [2022-11-18 20:24:45,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 473 transitions, 1600 flow. Second operand has 4 states, 4 states have (on average 394.75) internal successors, (1579), 4 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:45,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 445 [2022-11-18 20:24:45,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:46,304 INFO L130 PetriNetUnfolder]: 208/2472 cut-off events. [2022-11-18 20:24:46,305 INFO L131 PetriNetUnfolder]: For 486/488 co-relation queries the response was YES. [2022-11-18 20:24:46,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3697 conditions, 2472 events. 208/2472 cut-off events. For 486/488 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 18775 event pairs, 60 based on Foata normal form. 16/2136 useless extension candidates. Maximal degree in co-relation 3509. Up to 211 conditions per place. [2022-11-18 20:24:46,363 INFO L137 encePairwiseOnDemand]: 438/445 looper letters, 47 selfloop transitions, 8 changer transitions 0/485 dead transitions. [2022-11-18 20:24:46,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 485 transitions, 1730 flow [2022-11-18 20:24:46,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:24:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:24:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1617 transitions. [2022-11-18 20:24:46,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9084269662921348 [2022-11-18 20:24:46,366 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1617 transitions. [2022-11-18 20:24:46,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1617 transitions. [2022-11-18 20:24:46,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:46,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1617 transitions. [2022-11-18 20:24:46,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 404.25) internal successors, (1617), 4 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,374 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,374 INFO L175 Difference]: Start difference. First operand has 502 places, 473 transitions, 1600 flow. Second operand 4 states and 1617 transitions. [2022-11-18 20:24:46,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 485 transitions, 1730 flow [2022-11-18 20:24:46,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 485 transitions, 1664 flow, removed 2 selfloop flow, removed 20 redundant places. [2022-11-18 20:24:46,389 INFO L231 Difference]: Finished difference. Result has 487 places, 472 transitions, 1564 flow [2022-11-18 20:24:46,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1564, PETRI_PLACES=487, PETRI_TRANSITIONS=472} [2022-11-18 20:24:46,392 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 89 predicate places. [2022-11-18 20:24:46,392 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 472 transitions, 1564 flow [2022-11-18 20:24:46,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 394.75) internal successors, (1579), 4 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:46,393 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:46,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:24:46,394 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:24:46,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:46,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1612848059, now seen corresponding path program 1 times [2022-11-18 20:24:46,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:46,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929040471] [2022-11-18 20:24:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:46,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 11 proven. 108 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-18 20:24:52,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:52,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929040471] [2022-11-18 20:24:52,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929040471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:52,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240127246] [2022-11-18 20:24:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:52,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:52,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:52,743 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:52,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:24:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:52,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-18 20:24:52,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:53,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:24:53,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:24:54,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:54,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:24:54,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:54,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:24:55,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:55,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:24:55,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:55,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:24:56,385 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:24:56,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:24:56,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:56,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:57,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:57,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:57,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:57,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:57,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:57,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:57,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:24:58,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:24:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 48 proven. 76 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-18 20:24:58,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:26:40,398 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-18 20:26:40,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 77 [2022-11-18 20:26:40,414 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:26:40,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 490 treesize of output 476 [2022-11-18 20:26:40,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 215 [2022-11-18 20:26:40,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 414 [2022-11-18 20:26:40,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 414 treesize of output 406 [2022-11-18 20:27:01,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:27:01,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-11-18 20:27:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 34 proven. 82 refuted. 8 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-18 20:27:02,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240127246] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:27:02,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:27:02,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 32] total 86 [2022-11-18 20:27:02,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844693017] [2022-11-18 20:27:02,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:27:02,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-11-18 20:27:02,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:02,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-11-18 20:27:02,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=6836, Unknown=112, NotChecked=0, Total=7482 [2022-11-18 20:27:02,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 445 [2022-11-18 20:27:02,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 472 transitions, 1564 flow. Second operand has 87 states, 87 states have (on average 263.5632183908046) internal successors, (22930), 87 states have internal predecessors, (22930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:02,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:27:02,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 445 [2022-11-18 20:27:02,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:27:30,041 INFO L130 PetriNetUnfolder]: 9220/45431 cut-off events. [2022-11-18 20:27:30,041 INFO L131 PetriNetUnfolder]: For 6612/6925 co-relation queries the response was YES. [2022-11-18 20:27:30,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62997 conditions, 45431 events. 9220/45431 cut-off events. For 6612/6925 co-relation queries the response was YES. Maximal size of possible extension queue 1200. Compared 662783 event pairs, 1119 based on Foata normal form. 27/37471 useless extension candidates. Maximal degree in co-relation 62751. Up to 3310 conditions per place. [2022-11-18 20:27:31,211 INFO L137 encePairwiseOnDemand]: 389/445 looper letters, 360 selfloop transitions, 123 changer transitions 0/732 dead transitions. [2022-11-18 20:27:31,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 732 transitions, 3412 flow [2022-11-18 20:27:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-18 20:27:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-11-18 20:27:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 18809 transitions. [2022-11-18 20:27:31,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5953157145117899 [2022-11-18 20:27:31,236 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 18809 transitions. [2022-11-18 20:27:31,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 18809 transitions. [2022-11-18 20:27:31,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:27:31,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 18809 transitions. [2022-11-18 20:27:31,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 264.9154929577465) internal successors, (18809), 71 states have internal predecessors, (18809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:31,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 445.0) internal successors, (32040), 72 states have internal predecessors, (32040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:31,327 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 445.0) internal successors, (32040), 72 states have internal predecessors, (32040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:31,327 INFO L175 Difference]: Start difference. First operand has 487 places, 472 transitions, 1564 flow. Second operand 71 states and 18809 transitions. [2022-11-18 20:27:31,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 732 transitions, 3412 flow [2022-11-18 20:27:31,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 732 transitions, 3412 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:27:31,373 INFO L231 Difference]: Finished difference. Result has 574 places, 516 transitions, 2205 flow [2022-11-18 20:27:31,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=2205, PETRI_PLACES=574, PETRI_TRANSITIONS=516} [2022-11-18 20:27:31,376 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 176 predicate places. [2022-11-18 20:27:31,376 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 516 transitions, 2205 flow [2022-11-18 20:27:31,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 263.5632183908046) internal successors, (22930), 87 states have internal predecessors, (22930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:31,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:27:31,382 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:31,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:31,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:27:31,588 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-18 20:27:31,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:31,589 INFO L85 PathProgramCache]: Analyzing trace with hash -480971830, now seen corresponding path program 1 times [2022-11-18 20:27:31,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:31,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096358785] [2022-11-18 20:27:31,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:31,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 27 proven. 68 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 20:27:34,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:34,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096358785] [2022-11-18 20:27:34,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096358785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:34,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885231465] [2022-11-18 20:27:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:34,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:34,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:34,861 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:27:34,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f30a7adc-6e10-4626-b263-0806b5af305f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:27:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:35,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 20:27:35,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:36,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:27:36,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:36,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:27:36,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:36,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:27:37,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:37,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:27:37,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:37,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:27:37,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:37,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:27:37,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:37,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:27:37,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:27:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 48 proven. 47 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 20:27:38,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:27:38,278 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_575) c_~o_4~0.base) c_~o_4~0.offset) 9223372039002259456)) is different from false [2022-11-18 20:29:01,537 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-18 20:29:01,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 74 [2022-11-18 20:29:01,551 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:29:01,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 120 [2022-11-18 20:29:01,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2022-11-18 20:29:01,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-18 20:29:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 36 proven. 53 refuted. 6 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 20:29:22,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885231465] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:22,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:22,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 29] total 72 [2022-11-18 20:29:22,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283077646] [2022-11-18 20:29:22,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:22,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-18 20:29:22,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:22,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-18 20:29:22,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=4516, Unknown=131, NotChecked=140, Total=5256 [2022-11-18 20:29:22,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 445 [2022-11-18 20:29:22,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 516 transitions, 2205 flow. Second operand has 73 states, 73 states have (on average 307.82191780821915) internal successors, (22471), 73 states have internal predecessors, (22471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:22,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:29:22,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 445 [2022-11-18 20:29:22,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand