./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-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_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/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_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/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_14cb5149-0b9c-415b-8447-11d45bba3b54/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 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:08:56,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:08:56,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:08:56,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:08:56,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:08:56,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:08:56,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:08:56,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:08:56,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:08:56,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:08:56,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:08:56,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:08:56,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:08:56,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:08:56,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:08:56,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:08:56,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:08:56,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:08:56,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:08:56,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:08:56,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:08:56,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:08:56,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:08:56,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:08:56,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:08:56,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:08:56,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:08:56,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:08:56,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:08:56,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:08:56,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:08:56,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:08:56,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:08:56,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:08:56,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:08:56,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:08:56,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:08:56,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:08:56,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:08:56,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:08:56,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:08:56,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:08:56,407 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:08:56,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:08:56,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:08:56,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:08:56,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:08:56,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:08:56,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:08:56,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:08:56,416 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:08:56,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:08:56,418 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:08:56,419 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:08:56,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:08:56,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:08:56,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:08:56,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:08:56,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:08:56,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:08:56,421 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:08:56,421 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:08:56,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:08:56,422 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:08:56,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:08:56,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:08:56,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:08:56,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:08:56,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:08:56,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:08:56,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:08:56,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:08:56,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:08:56,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:08:56,428 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:08:56,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:08:56,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:08:56,429 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_14cb5149-0b9c-415b-8447-11d45bba3b54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2022-11-18 21:08:56,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:08:56,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:08:56,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:08:56,837 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:08:56,838 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:08:56,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-11-18 21:08:56,929 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/data/9698d872c/a2e4486c7a0b412491dd9327b0a6b0b1/FLAGf417c2929 [2022-11-18 21:08:57,533 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:08:57,534 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-11-18 21:08:57,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/data/9698d872c/a2e4486c7a0b412491dd9327b0a6b0b1/FLAGf417c2929 [2022-11-18 21:08:57,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/data/9698d872c/a2e4486c7a0b412491dd9327b0a6b0b1 [2022-11-18 21:08:57,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:08:57,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:08:57,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:08:57,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:08:57,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:08:57,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:08:57" (1/1) ... [2022-11-18 21:08:57,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ece4eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:57, skipping insertion in model container [2022-11-18 21:08:57,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:08:57" (1/1) ... [2022-11-18 21:08:57,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:08:57,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:08:58,295 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_14cb5149-0b9c-415b-8447-11d45bba3b54/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-11-18 21:08:58,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:08:58,331 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:08:58,385 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_14cb5149-0b9c-415b-8447-11d45bba3b54/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-11-18 21:08:58,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:08:58,423 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:08:58,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58 WrapperNode [2022-11-18 21:08:58,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:08:58,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:08:58,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:08:58,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:08:58,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (1/1) ... [2022-11-18 21:08:58,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (1/1) ... [2022-11-18 21:08:58,521 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 337 [2022-11-18 21:08:58,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:08:58,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:08:58,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:08:58,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:08:58,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (1/1) ... [2022-11-18 21:08:58,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (1/1) ... [2022-11-18 21:08:58,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (1/1) ... [2022-11-18 21:08:58,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (1/1) ... [2022-11-18 21:08:58,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (1/1) ... [2022-11-18 21:08:58,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (1/1) ... [2022-11-18 21:08:58,590 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (1/1) ... [2022-11-18 21:08:58,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (1/1) ... [2022-11-18 21:08:58,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:08:58,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:08:58,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:08:58,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:08:58,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (1/1) ... [2022-11-18 21:08:58,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:08:58,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:58,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:08:58,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:08:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:08:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:08:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:08:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:08:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:08:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:08:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:08:58,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:08:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:08:58,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:08:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:08:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:08:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:08:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:08:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:08:58,721 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:08:58,955 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:08:58,957 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:08:59,683 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:08:59,707 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:08:59,714 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 21:08:59,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:08:59 BoogieIcfgContainer [2022-11-18 21:08:59,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:08:59,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:08:59,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:08:59,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:08:59,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:08:57" (1/3) ... [2022-11-18 21:08:59,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2df93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:08:59, skipping insertion in model container [2022-11-18 21:08:59,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:58" (2/3) ... [2022-11-18 21:08:59,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2df93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:08:59, skipping insertion in model container [2022-11-18 21:08:59,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:08:59" (3/3) ... [2022-11-18 21:08:59,736 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2022-11-18 21:08:59,748 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:08:59,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:08:59,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-18 21:08:59,761 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:08:59,999 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 21:09:00,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 451 transitions, 926 flow [2022-11-18 21:09:00,324 INFO L130 PetriNetUnfolder]: 34/448 cut-off events. [2022-11-18 21:09:00,325 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:09:00,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 448 events. 34/448 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1063 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 341. Up to 3 conditions per place. [2022-11-18 21:09:00,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 451 transitions, 926 flow [2022-11-18 21:09:00,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 427 transitions, 869 flow [2022-11-18 21:09:00,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:09:00,405 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;@5fbd6516, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:09:00,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2022-11-18 21:09:00,426 INFO L130 PetriNetUnfolder]: 3/70 cut-off events. [2022-11-18 21:09:00,426 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:09:00,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:00,427 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] [2022-11-18 21:09:00,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 21:09:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:00,435 INFO L85 PathProgramCache]: Analyzing trace with hash -52091357, now seen corresponding path program 1 times [2022-11-18 21:09:00,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:00,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328108001] [2022-11-18 21:09:00,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:00,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:01,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:01,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328108001] [2022-11-18 21:09:01,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328108001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:01,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:01,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:09:01,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26328777] [2022-11-18 21:09:01,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:01,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:09:01,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:01,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:09:01,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:09:01,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 451 [2022-11-18 21:09:01,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 427 transitions, 869 flow. Second operand has 4 states, 4 states have (on average 390.5) internal successors, (1562), 4 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:01,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:01,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 451 [2022-11-18 21:09:01,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:01,660 INFO L130 PetriNetUnfolder]: 29/718 cut-off events. [2022-11-18 21:09:01,660 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 21:09:01,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 718 events. 29/718 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2907 event pairs, 0 based on Foata normal form. 36/640 useless extension candidates. Maximal degree in co-relation 618. Up to 44 conditions per place. [2022-11-18 21:09:01,678 INFO L137 encePairwiseOnDemand]: 413/451 looper letters, 58 selfloop transitions, 14 changer transitions 6/440 dead transitions. [2022-11-18 21:09:01,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 440 transitions, 1054 flow [2022-11-18 21:09:01,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:09:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:09:01,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2053 transitions. [2022-11-18 21:09:01,714 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9104212860310421 [2022-11-18 21:09:01,715 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2053 transitions. [2022-11-18 21:09:01,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2053 transitions. [2022-11-18 21:09:01,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:01,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2053 transitions. [2022-11-18 21:09:01,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 410.6) internal successors, (2053), 5 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:01,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 451.0) internal successors, (2706), 6 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:01,757 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 451.0) internal successors, (2706), 6 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:01,759 INFO L175 Difference]: Start difference. First operand has 404 places, 427 transitions, 869 flow. Second operand 5 states and 2053 transitions. [2022-11-18 21:09:01,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 440 transitions, 1054 flow [2022-11-18 21:09:01,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 440 transitions, 1036 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:09:01,786 INFO L231 Difference]: Finished difference. Result has 406 places, 414 transitions, 916 flow [2022-11-18 21:09:01,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=916, PETRI_PLACES=406, PETRI_TRANSITIONS=414} [2022-11-18 21:09:01,794 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 2 predicate places. [2022-11-18 21:09:01,795 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 414 transitions, 916 flow [2022-11-18 21:09:01,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 390.5) internal successors, (1562), 4 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:01,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:01,797 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:01,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:09:01,798 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 21:09:01,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:01,799 INFO L85 PathProgramCache]: Analyzing trace with hash 13416447, now seen corresponding path program 1 times [2022-11-18 21:09:01,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:01,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205507771] [2022-11-18 21:09:01,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:02,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:02,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205507771] [2022-11-18 21:09:02,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205507771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:02,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501906623] [2022-11-18 21:09:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:02,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:02,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:02,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:02,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:09:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:02,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:02,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:02,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:02,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501906623] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:02,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:02,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:09:02,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996795637] [2022-11-18 21:09:02,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:02,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:09:02,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:02,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:09:02,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:09:02,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 451 [2022-11-18 21:09:02,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 414 transitions, 916 flow. Second operand has 12 states, 12 states have (on average 391.6666666666667) internal successors, (4700), 12 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:02,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:02,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 451 [2022-11-18 21:09:02,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:03,639 INFO L130 PetriNetUnfolder]: 71/1645 cut-off events. [2022-11-18 21:09:03,639 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 21:09:03,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 1645 events. 71/1645 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10183 event pairs, 0 based on Foata normal form. 9/1399 useless extension candidates. Maximal degree in co-relation 1176. Up to 35 conditions per place. [2022-11-18 21:09:03,679 INFO L137 encePairwiseOnDemand]: 428/451 looper letters, 109 selfloop transitions, 62 changer transitions 0/533 dead transitions. [2022-11-18 21:09:03,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 533 transitions, 1598 flow [2022-11-18 21:09:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:09:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:09:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7182 transitions. [2022-11-18 21:09:03,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88470066518847 [2022-11-18 21:09:03,700 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7182 transitions. [2022-11-18 21:09:03,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7182 transitions. [2022-11-18 21:09:03,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:03,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7182 transitions. [2022-11-18 21:09:03,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 399.0) internal successors, (7182), 18 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:03,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 451.0) internal successors, (8569), 19 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:03,756 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 451.0) internal successors, (8569), 19 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:03,756 INFO L175 Difference]: Start difference. First operand has 406 places, 414 transitions, 916 flow. Second operand 18 states and 7182 transitions. [2022-11-18 21:09:03,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 533 transitions, 1598 flow [2022-11-18 21:09:03,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 533 transitions, 1590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:09:03,773 INFO L231 Difference]: Finished difference. Result has 420 places, 456 transitions, 1278 flow [2022-11-18 21:09:03,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1278, PETRI_PLACES=420, PETRI_TRANSITIONS=456} [2022-11-18 21:09:03,775 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 16 predicate places. [2022-11-18 21:09:03,776 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 456 transitions, 1278 flow [2022-11-18 21:09:03,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 391.6666666666667) internal successors, (4700), 12 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:03,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:03,780 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:03,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:03,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:03,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 21:09:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash 415910724, now seen corresponding path program 1 times [2022-11-18 21:09:03,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:03,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079092821] [2022-11-18 21:09:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:03,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:04,154 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 21:09:04,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:04,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079092821] [2022-11-18 21:09:04,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079092821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:04,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228222088] [2022-11-18 21:09:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:04,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:04,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:04,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:04,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:09:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:04,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:04,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:04,341 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 21:09:04,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:09:04,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228222088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:04,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:04,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:09:04,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829535820] [2022-11-18 21:09:04,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:04,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:09:04,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:04,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:09:04,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:09:04,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 451 [2022-11-18 21:09:04,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 456 transitions, 1278 flow. Second operand has 6 states, 6 states have (on average 391.3333333333333) internal successors, (2348), 6 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:04,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:04,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 451 [2022-11-18 21:09:04,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:05,127 INFO L130 PetriNetUnfolder]: 71/1633 cut-off events. [2022-11-18 21:09:05,127 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-18 21:09:05,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1979 conditions, 1633 events. 71/1633 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10130 event pairs, 0 based on Foata normal form. 12/1390 useless extension candidates. Maximal degree in co-relation 1538. Up to 68 conditions per place. [2022-11-18 21:09:05,174 INFO L137 encePairwiseOnDemand]: 434/451 looper letters, 59 selfloop transitions, 43 changer transitions 0/464 dead transitions. [2022-11-18 21:09:05,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 464 transitions, 1453 flow [2022-11-18 21:09:05,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:09:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:09:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2795 transitions. [2022-11-18 21:09:05,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8853341780171049 [2022-11-18 21:09:05,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2795 transitions. [2022-11-18 21:09:05,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2795 transitions. [2022-11-18 21:09:05,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:05,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2795 transitions. [2022-11-18 21:09:05,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 399.2857142857143) internal successors, (2795), 7 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:05,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 451.0) internal successors, (3608), 8 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:05,204 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 451.0) internal successors, (3608), 8 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:05,204 INFO L175 Difference]: Start difference. First operand has 420 places, 456 transitions, 1278 flow. Second operand 7 states and 2795 transitions. [2022-11-18 21:09:05,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 464 transitions, 1453 flow [2022-11-18 21:09:05,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 464 transitions, 1337 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 21:09:05,219 INFO L231 Difference]: Finished difference. Result has 414 places, 444 transitions, 1167 flow [2022-11-18 21:09:05,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1167, PETRI_PLACES=414, PETRI_TRANSITIONS=444} [2022-11-18 21:09:05,221 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 10 predicate places. [2022-11-18 21:09:05,221 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 444 transitions, 1167 flow [2022-11-18 21:09:05,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 391.3333333333333) internal successors, (2348), 6 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:05,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:05,223 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:05,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:05,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:05,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 21:09:05,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:05,430 INFO L85 PathProgramCache]: Analyzing trace with hash -848366301, now seen corresponding path program 2 times [2022-11-18 21:09:05,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:05,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743766892] [2022-11-18 21:09:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:05,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:05,754 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 21:09:05,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:05,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743766892] [2022-11-18 21:09:05,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743766892] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:05,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543173861] [2022-11-18 21:09:05,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:09:05,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:05,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:05,757 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:05,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:09:05,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:09:05,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:09:05,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:09:05,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:06,114 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 21:09:06,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:06,384 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 21:09:06,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543173861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:06,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:06,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 21:09:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921012230] [2022-11-18 21:09:06,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:06,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:09:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:09:06,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:09:06,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 451 [2022-11-18 21:09:06,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 444 transitions, 1167 flow. Second operand has 18 states, 18 states have (on average 358.6111111111111) internal successors, (6455), 18 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:06,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:06,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 451 [2022-11-18 21:09:06,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:11,442 INFO L130 PetriNetUnfolder]: 1002/9656 cut-off events. [2022-11-18 21:09:11,442 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-11-18 21:09:11,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11446 conditions, 9656 events. 1002/9656 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 105793 event pairs, 539 based on Foata normal form. 6/7616 useless extension candidates. Maximal degree in co-relation 9258. Up to 211 conditions per place. [2022-11-18 21:09:11,726 INFO L137 encePairwiseOnDemand]: 423/451 looper letters, 248 selfloop transitions, 97 changer transitions 0/673 dead transitions. [2022-11-18 21:09:11,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 673 transitions, 2452 flow [2022-11-18 21:09:11,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 21:09:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 21:09:11,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 17746 transitions. [2022-11-18 21:09:11,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8030227612109145 [2022-11-18 21:09:11,765 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 17746 transitions. [2022-11-18 21:09:11,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 17746 transitions. [2022-11-18 21:09:11,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:11,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 17746 transitions. [2022-11-18 21:09:11,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 362.16326530612247) internal successors, (17746), 49 states have internal predecessors, (17746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:11,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 451.0) internal successors, (22550), 50 states have internal predecessors, (22550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:11,870 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 451.0) internal successors, (22550), 50 states have internal predecessors, (22550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:11,871 INFO L175 Difference]: Start difference. First operand has 414 places, 444 transitions, 1167 flow. Second operand 49 states and 17746 transitions. [2022-11-18 21:09:11,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 673 transitions, 2452 flow [2022-11-18 21:09:11,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 673 transitions, 2383 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:09:11,887 INFO L231 Difference]: Finished difference. Result has 460 places, 484 transitions, 1510 flow [2022-11-18 21:09:11,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1510, PETRI_PLACES=460, PETRI_TRANSITIONS=484} [2022-11-18 21:09:11,889 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 56 predicate places. [2022-11-18 21:09:11,889 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 484 transitions, 1510 flow [2022-11-18 21:09:11,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 358.6111111111111) internal successors, (6455), 18 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:11,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:11,892 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] [2022-11-18 21:09:11,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:12,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cb5149-0b9c-415b-8447-11d45bba3b54/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:12,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 21:09:12,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:12,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2076104386, now seen corresponding path program 1 times [2022-11-18 21:09:12,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:12,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597131606] [2022-11-18 21:09:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:12,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:12,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:12,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597131606] [2022-11-18 21:09:12,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597131606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:12,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:12,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 21:09:12,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839037825] [2022-11-18 21:09:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:12,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:09:12,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:12,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:09:12,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:09:12,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 451 [2022-11-18 21:09:12,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 484 transitions, 1510 flow. Second operand has 11 states, 11 states have (on average 339.3636363636364) internal successors, (3733), 11 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:12,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:12,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 451 [2022-11-18 21:09:12,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:38,056 INFO L130 PetriNetUnfolder]: 19888/123426 cut-off events. [2022-11-18 21:09:38,056 INFO L131 PetriNetUnfolder]: For 1751/1751 co-relation queries the response was YES. [2022-11-18 21:09:39,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148738 conditions, 123426 events. 19888/123426 cut-off events. For 1751/1751 co-relation queries the response was YES. Maximal size of possible extension queue 1951. Compared 2061001 event pairs, 13202 based on Foata normal form. 0/95594 useless extension candidates. Maximal degree in co-relation 127459. Up to 10797 conditions per place. [2022-11-18 21:09:40,119 INFO L137 encePairwiseOnDemand]: 433/451 looper letters, 234 selfloop transitions, 35 changer transitions 0/604 dead transitions. [2022-11-18 21:09:40,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 604 transitions, 2531 flow [2022-11-18 21:09:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:09:40,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 21:09:40,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5862 transitions. [2022-11-18 21:09:40,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7645754532411634 [2022-11-18 21:09:40,135 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5862 transitions. [2022-11-18 21:09:40,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5862 transitions. [2022-11-18 21:09:40,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:40,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5862 transitions. [2022-11-18 21:09:40,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 344.8235294117647) internal successors, (5862), 17 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:40,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 451.0) internal successors, (8118), 18 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:40,174 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 451.0) internal successors, (8118), 18 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:40,174 INFO L175 Difference]: Start difference. First operand has 460 places, 484 transitions, 1510 flow. Second operand 17 states and 5862 transitions. [2022-11-18 21:09:40,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 604 transitions, 2531 flow [2022-11-18 21:09:40,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 604 transitions, 2350 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-11-18 21:09:40,194 INFO L231 Difference]: Finished difference. Result has 470 places, 498 transitions, 1589 flow [2022-11-18 21:09:40,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1589, PETRI_PLACES=470, PETRI_TRANSITIONS=498} [2022-11-18 21:09:40,198 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 66 predicate places. [2022-11-18 21:09:40,199 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 498 transitions, 1589 flow [2022-11-18 21:09:40,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 339.3636363636364) internal successors, (3733), 11 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:40,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:40,201 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] [2022-11-18 21:09:40,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:09:40,201 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 21:09:40,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash 65274551, now seen corresponding path program 1 times [2022-11-18 21:09:40,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:40,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027023021] [2022-11-18 21:09:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:40,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:40,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:40,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027023021] [2022-11-18 21:09:40,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027023021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:40,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:40,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:09:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321269393] [2022-11-18 21:09:40,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:40,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:09:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:40,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:09:40,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:09:40,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 451 [2022-11-18 21:09:40,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 498 transitions, 1589 flow. Second operand has 8 states, 8 states have (on average 365.25) internal successors, (2922), 8 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:40,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:40,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 451 [2022-11-18 21:09:40,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand