./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN --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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --- 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-6b4ec56 [2022-11-20 11:02:05,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:02:05,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:02:05,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:02:05,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:02:05,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:02:05,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:02:05,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:02:05,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:02:05,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:02:05,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:02:05,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:02:05,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:02:05,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:02:05,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:02:05,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:02:05,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:02:05,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:02:05,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:02:05,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:02:05,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:02:05,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:02:05,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:02:05,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:02:05,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:02:05,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:02:05,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:02:05,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:02:05,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:02:05,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:02:05,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:02:05,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:02:05,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:02:05,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:02:05,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:02:05,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:02:05,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:02:05,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:02:05,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:02:05,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:02:05,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:02:05,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:02:05,590 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:02:05,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:02:05,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:02:05,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:02:05,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:02:05,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:02:05,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:02:05,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:02:05,595 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:02:05,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:02:05,596 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:02:05,596 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:02:05,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:02:05,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:02:05,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:02:05,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:02:05,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:02:05,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:02:05,598 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:02:05,598 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:02:05,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:02:05,598 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:02:05,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:02:05,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:02:05,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:02:05,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:02:05,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:02:05,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:02:05,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:02:05,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:02:05,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:02:05,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:02:05,601 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:02:05,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:02:05,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:02:05,602 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_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 [2022-11-20 11:02:05,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:02:05,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:02:05,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:02:05,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:02:05,929 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:02:05,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-11-20 11:02:09,031 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:02:09,256 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:02:09,256 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-11-20 11:02:09,264 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/data/af19fa749/285841163de74d2fb6fa2040951f18c7/FLAGd2b254436 [2022-11-20 11:02:09,289 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/data/af19fa749/285841163de74d2fb6fa2040951f18c7 [2022-11-20 11:02:09,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:02:09,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:02:09,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:02:09,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:02:09,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:02:09,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392d8257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09, skipping insertion in model container [2022-11-20 11:02:09,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:02:09,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:02:09,560 WARN L237 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_3914f3a0-1382-4d26-902b-80c09e2c6e95/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-11-20 11:02:09,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:02:09,587 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:02:09,615 WARN L237 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_3914f3a0-1382-4d26-902b-80c09e2c6e95/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-11-20 11:02:09,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:02:09,633 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:02:09,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09 WrapperNode [2022-11-20 11:02:09,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:02:09,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:02:09,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:02:09,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:02:09,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,690 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 341 [2022-11-20 11:02:09,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:02:09,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:02:09,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:02:09,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:02:09,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:02:09,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:02:09,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:02:09,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:02:09,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (1/1) ... [2022-11-20 11:02:09,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:02:09,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:09,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:02:09,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:02:09,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:02:09,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:02:09,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:02:09,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:02:09,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:02:09,838 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:02:09,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:02:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:02:09,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:02:09,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:02:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:02:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:02:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:02:09,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:02:09,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:02:09,844 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:02:09,978 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:02:09,981 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:02:10,731 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:02:10,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:02:10,752 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 11:02:10,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:02:10 BoogieIcfgContainer [2022-11-20 11:02:10,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:02:10,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:02:10,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:02:10,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:02:10,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:02:09" (1/3) ... [2022-11-20 11:02:10,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e4deb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:02:10, skipping insertion in model container [2022-11-20 11:02:10,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:09" (2/3) ... [2022-11-20 11:02:10,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e4deb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:02:10, skipping insertion in model container [2022-11-20 11:02:10,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:02:10" (3/3) ... [2022-11-20 11:02:10,769 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2022-11-20 11:02:10,782 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:02:10,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:02:10,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-20 11:02:10,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:02:10,994 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:02:11,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 459 transitions, 942 flow [2022-11-20 11:02:11,391 INFO L130 PetriNetUnfolder]: 35/456 cut-off events. [2022-11-20 11:02:11,391 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:02:11,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 456 events. 35/456 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1067 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 341. Up to 3 conditions per place. [2022-11-20 11:02:11,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 459 transitions, 942 flow [2022-11-20 11:02:11,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 427 transitions, 869 flow [2022-11-20 11:02:11,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:02:11,452 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;@750fe5a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:02:11,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2022-11-20 11:02:11,464 INFO L130 PetriNetUnfolder]: 3/70 cut-off events. [2022-11-20 11:02:11,464 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:02:11,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:11,466 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] [2022-11-20 11:02:11,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-20 11:02:11,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:11,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1777577551, now seen corresponding path program 1 times [2022-11-20 11:02:11,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:11,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847898059] [2022-11-20 11:02:11,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:11,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:11,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:11,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847898059] [2022-11-20 11:02:11,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847898059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:11,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:11,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:11,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849974404] [2022-11-20 11:02:11,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:11,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:02:11,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:11,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:02:12,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:02:12,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 459 [2022-11-20 11:02:12,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 427 transitions, 869 flow. Second operand has 4 states, 4 states have (on average 397.5) internal successors, (1590), 4 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:12,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:12,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 459 [2022-11-20 11:02:12,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:12,476 INFO L130 PetriNetUnfolder]: 29/718 cut-off events. [2022-11-20 11:02:12,476 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-20 11:02:12,487 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 2911 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. [2022-11-20 11:02:12,494 INFO L137 encePairwiseOnDemand]: 421/459 looper letters, 58 selfloop transitions, 14 changer transitions 6/440 dead transitions. [2022-11-20 11:02:12,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 440 transitions, 1054 flow [2022-11-20 11:02:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:02:12,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:02:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2088 transitions. [2022-11-20 11:02:12,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9098039215686274 [2022-11-20 11:02:12,524 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2088 transitions. [2022-11-20 11:02:12,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2088 transitions. [2022-11-20 11:02:12,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:12,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2088 transitions. [2022-11-20 11:02:12,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 417.6) internal successors, (2088), 5 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:12,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 459.0) internal successors, (2754), 6 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:12,554 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 459.0) internal successors, (2754), 6 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:12,556 INFO L175 Difference]: Start difference. First operand has 404 places, 427 transitions, 869 flow. Second operand 5 states and 2088 transitions. [2022-11-20 11:02:12,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 440 transitions, 1054 flow [2022-11-20 11:02:12,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 440 transitions, 1036 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:02:12,579 INFO L231 Difference]: Finished difference. Result has 406 places, 414 transitions, 916 flow [2022-11-20 11:02:12,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, 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} [2022-11-20 11:02:12,588 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 2 predicate places. [2022-11-20 11:02:12,588 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 414 transitions, 916 flow [2022-11-20 11:02:12,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 397.5) internal successors, (1590), 4 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:12,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:12,590 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] [2022-11-20 11:02:12,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:02:12,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-20 11:02:12,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:12,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1218740394, now seen corresponding path program 1 times [2022-11-20 11:02:12,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:12,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447387235] [2022-11-20 11:02:12,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:12,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:12,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:12,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447387235] [2022-11-20 11:02:12,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447387235] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:12,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071184102] [2022-11-20 11:02:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:12,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:12,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:12,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:02:12,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:02:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:12,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:02:12,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:13,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:13,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071184102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:13,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:02:13,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:02:13,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189232263] [2022-11-20 11:02:13,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:13,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:02:13,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:13,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:02:13,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:02:13,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 459 [2022-11-20 11:02:13,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 414 transitions, 916 flow. Second operand has 12 states, 12 states have (on average 398.6666666666667) internal successors, (4784), 12 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:13,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:13,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 459 [2022-11-20 11:02:13,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:14,166 INFO L130 PetriNetUnfolder]: 71/1645 cut-off events. [2022-11-20 11:02:14,166 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-20 11:02:14,193 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 10231 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. [2022-11-20 11:02:14,207 INFO L137 encePairwiseOnDemand]: 436/459 looper letters, 109 selfloop transitions, 62 changer transitions 0/533 dead transitions. [2022-11-20 11:02:14,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 533 transitions, 1598 flow [2022-11-20 11:02:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:02:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:02:14,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7308 transitions. [2022-11-20 11:02:14,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8845315904139434 [2022-11-20 11:02:14,222 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7308 transitions. [2022-11-20 11:02:14,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7308 transitions. [2022-11-20 11:02:14,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:14,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7308 transitions. [2022-11-20 11:02:14,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 406.0) internal successors, (7308), 18 states have internal predecessors, (7308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:14,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 459.0) internal successors, (8721), 19 states have internal predecessors, (8721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:14,266 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 459.0) internal successors, (8721), 19 states have internal predecessors, (8721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:14,267 INFO L175 Difference]: Start difference. First operand has 406 places, 414 transitions, 916 flow. Second operand 18 states and 7308 transitions. [2022-11-20 11:02:14,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 533 transitions, 1598 flow [2022-11-20 11:02:14,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 533 transitions, 1590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:02:14,280 INFO L231 Difference]: Finished difference. Result has 420 places, 456 transitions, 1278 flow [2022-11-20 11:02:14,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, 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} [2022-11-20 11:02:14,282 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 16 predicate places. [2022-11-20 11:02:14,282 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 456 transitions, 1278 flow [2022-11-20 11:02:14,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 398.6666666666667) internal successors, (4784), 12 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:14,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:14,286 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] [2022-11-20 11:02:14,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:14,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:14,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-20 11:02:14,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:14,501 INFO L85 PathProgramCache]: Analyzing trace with hash -873752407, now seen corresponding path program 1 times [2022-11-20 11:02:14,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:14,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988371323] [2022-11-20 11:02:14,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:14,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:14,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:14,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988371323] [2022-11-20 11:02:14,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988371323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:14,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486427128] [2022-11-20 11:02:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:14,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:14,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:14,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:02:14,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:02:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:14,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:02:14,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:14,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:14,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:14,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486427128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:14,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:02:14,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:02:14,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649400933] [2022-11-20 11:02:14,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:14,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:02:14,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:02:14,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:02:14,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 459 [2022-11-20 11:02:14,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 456 transitions, 1278 flow. Second operand has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:14,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:14,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 459 [2022-11-20 11:02:14,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:15,488 INFO L130 PetriNetUnfolder]: 71/1633 cut-off events. [2022-11-20 11:02:15,488 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-20 11:02:15,511 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 10134 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. [2022-11-20 11:02:15,530 INFO L137 encePairwiseOnDemand]: 442/459 looper letters, 59 selfloop transitions, 43 changer transitions 0/464 dead transitions. [2022-11-20 11:02:15,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 464 transitions, 1453 flow [2022-11-20 11:02:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:02:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:02:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2844 transitions. [2022-11-20 11:02:15,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8851540616246498 [2022-11-20 11:02:15,537 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2844 transitions. [2022-11-20 11:02:15,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2844 transitions. [2022-11-20 11:02:15,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:15,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2844 transitions. [2022-11-20 11:02:15,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 406.2857142857143) internal successors, (2844), 7 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:15,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 459.0) internal successors, (3672), 8 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:15,555 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 459.0) internal successors, (3672), 8 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:15,555 INFO L175 Difference]: Start difference. First operand has 420 places, 456 transitions, 1278 flow. Second operand 7 states and 2844 transitions. [2022-11-20 11:02:15,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 464 transitions, 1453 flow [2022-11-20 11:02:15,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 464 transitions, 1337 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 11:02:15,572 INFO L231 Difference]: Finished difference. Result has 414 places, 444 transitions, 1167 flow [2022-11-20 11:02:15,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, 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} [2022-11-20 11:02:15,575 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 10 predicate places. [2022-11-20 11:02:15,575 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 444 transitions, 1167 flow [2022-11-20 11:02:15,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:15,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:15,577 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] [2022-11-20 11:02:15,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:15,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:15,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-20 11:02:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:15,783 INFO L85 PathProgramCache]: Analyzing trace with hash -51002609, now seen corresponding path program 2 times [2022-11-20 11:02:15,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:15,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088510932] [2022-11-20 11:02:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:15,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:16,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:16,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088510932] [2022-11-20 11:02:16,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088510932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:16,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154311886] [2022-11-20 11:02:16,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:02:16,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:16,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:16,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:02:16,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:02:16,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:02:16,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:02:16,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:02:16,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:02:16,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:02:16,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154311886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:16,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:02:16,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 11:02:16,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169553989] [2022-11-20 11:02:16,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:16,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:02:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:16,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:02:16,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:02:16,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 459 [2022-11-20 11:02:16,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 444 transitions, 1167 flow. Second operand has 18 states, 18 states have (on average 365.6111111111111) internal successors, (6581), 18 states have internal predecessors, (6581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:16,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:16,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 459 [2022-11-20 11:02:16,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:21,951 INFO L130 PetriNetUnfolder]: 1884/14010 cut-off events. [2022-11-20 11:02:21,951 INFO L131 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2022-11-20 11:02:22,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17613 conditions, 14010 events. 1884/14010 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 165852 event pairs, 1225 based on Foata normal form. 6/10936 useless extension candidates. Maximal degree in co-relation 14544. Up to 448 conditions per place. [2022-11-20 11:02:22,226 INFO L137 encePairwiseOnDemand]: 431/459 looper letters, 248 selfloop transitions, 97 changer transitions 0/673 dead transitions. [2022-11-20 11:02:22,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 673 transitions, 2452 flow [2022-11-20 11:02:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 11:02:22,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 11:02:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 18089 transitions. [2022-11-20 11:02:22,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8042772664621404 [2022-11-20 11:02:22,262 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 18089 transitions. [2022-11-20 11:02:22,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 18089 transitions. [2022-11-20 11:02:22,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:22,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 18089 transitions. [2022-11-20 11:02:22,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 369.16326530612247) internal successors, (18089), 49 states have internal predecessors, (18089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:22,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 459.0) internal successors, (22950), 50 states have internal predecessors, (22950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:22,444 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 459.0) internal successors, (22950), 50 states have internal predecessors, (22950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:22,444 INFO L175 Difference]: Start difference. First operand has 414 places, 444 transitions, 1167 flow. Second operand 49 states and 18089 transitions. [2022-11-20 11:02:22,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 673 transitions, 2452 flow [2022-11-20 11:02:22,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 673 transitions, 2383 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:02:22,463 INFO L231 Difference]: Finished difference. Result has 460 places, 484 transitions, 1510 flow [2022-11-20 11:02:22,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, 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} [2022-11-20 11:02:22,465 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 56 predicate places. [2022-11-20 11:02:22,466 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 484 transitions, 1510 flow [2022-11-20 11:02:22,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 365.6111111111111) internal successors, (6581), 18 states have internal predecessors, (6581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:22,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:22,468 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] [2022-11-20 11:02:22,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:22,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3914f3a0-1382-4d26-902b-80c09e2c6e95/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 11:02:22,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-20 11:02:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:22,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2060217344, now seen corresponding path program 1 times [2022-11-20 11:02:22,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:22,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144119490] [2022-11-20 11:02:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:22,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:23,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:23,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144119490] [2022-11-20 11:02:23,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144119490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:23,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:23,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:02:23,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620892163] [2022-11-20 11:02:23,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:23,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:02:23,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:02:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:02:23,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 459 [2022-11-20 11:02:23,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 484 transitions, 1510 flow. Second operand has 11 states, 11 states have (on average 341.3636363636364) internal successors, (3755), 11 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:23,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:23,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 459 [2022-11-20 11:02:23,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:46,275 INFO L130 PetriNetUnfolder]: 20224/129292 cut-off events. [2022-11-20 11:02:46,276 INFO L131 PetriNetUnfolder]: For 1751/1751 co-relation queries the response was YES. [2022-11-20 11:02:47,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154604 conditions, 129292 events. 20224/129292 cut-off events. For 1751/1751 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 2183396 event pairs, 13594 based on Foata normal form. 0/100333 useless extension candidates. Maximal degree in co-relation 132487. Up to 10797 conditions per place. [2022-11-20 11:02:48,006 INFO L137 encePairwiseOnDemand]: 441/459 looper letters, 234 selfloop transitions, 35 changer transitions 0/604 dead transitions. [2022-11-20 11:02:48,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 604 transitions, 2531 flow [2022-11-20 11:02:48,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:02:48,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 11:02:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5896 transitions. [2022-11-20 11:02:48,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.755606817890555 [2022-11-20 11:02:48,021 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5896 transitions. [2022-11-20 11:02:48,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5896 transitions. [2022-11-20 11:02:48,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:48,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5896 transitions. [2022-11-20 11:02:48,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 346.8235294117647) internal successors, (5896), 17 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:48,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 459.0) internal successors, (8262), 18 states have internal predecessors, (8262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:48,057 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 459.0) internal successors, (8262), 18 states have internal predecessors, (8262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:48,058 INFO L175 Difference]: Start difference. First operand has 460 places, 484 transitions, 1510 flow. Second operand 17 states and 5896 transitions. [2022-11-20 11:02:48,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 604 transitions, 2531 flow [2022-11-20 11:02:48,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 604 transitions, 2350 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-11-20 11:02:48,077 INFO L231 Difference]: Finished difference. Result has 470 places, 498 transitions, 1589 flow [2022-11-20 11:02:48,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, 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} [2022-11-20 11:02:48,080 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 66 predicate places. [2022-11-20 11:02:48,081 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 498 transitions, 1589 flow [2022-11-20 11:02:48,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 341.3636363636364) internal successors, (3755), 11 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:48,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:48,083 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] [2022-11-20 11:02:48,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:02:48,083 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-20 11:02:48,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash -557770679, now seen corresponding path program 1 times [2022-11-20 11:02:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:48,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021245173] [2022-11-20 11:02:48,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:48,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:48,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021245173] [2022-11-20 11:02:48,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021245173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:48,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:48,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:02:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685022357] [2022-11-20 11:02:48,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:48,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:02:48,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:48,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:02:48,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:02:48,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 459 [2022-11-20 11:02:48,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 498 transitions, 1589 flow. Second operand has 8 states, 8 states have (on average 372.25) internal successors, (2978), 8 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:48,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:48,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 459 [2022-11-20 11:02:48,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand