./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.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_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/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_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/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_24982f64-d2e2-40c3-a08b-c9d0a1819485/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 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:42:21,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:42:21,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:42:21,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:42:21,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:42:21,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:42:21,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:42:21,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:42:21,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:42:21,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:42:21,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:42:21,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:42:21,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:42:21,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:42:21,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:42:21,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:42:21,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:42:21,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:42:21,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:42:21,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:42:21,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:42:21,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:42:21,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:42:21,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:42:21,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:42:21,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:42:21,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:42:21,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:42:21,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:42:21,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:42:21,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:42:21,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:42:21,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:42:21,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:42:21,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:42:21,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:42:21,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:42:21,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:42:21,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:42:21,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:42:21,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:42:21,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:42:21,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:42:21,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:42:21,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:42:21,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:42:21,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:42:21,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:42:21,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:42:21,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:42:21,619 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:42:21,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:42:21,619 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:42:21,619 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:42:21,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:42:21,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:42:21,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:42:21,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:42:21,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:42:21,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:42:21,621 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:42:21,621 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:42:21,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:42:21,621 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:42:21,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:42:21,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:42:21,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:42:21,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:42:21,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:42:21,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:42:21,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:42:21,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:42:21,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:42:21,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:42:21,634 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:42:21,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:42:21,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:42:21,636 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_24982f64-d2e2-40c3-a08b-c9d0a1819485/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f [2022-11-18 20:42:22,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:42:22,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:42:22,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:42:22,059 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:42:22,060 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:42:22,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-18 20:42:22,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/data/dc743baf0/dd68900395d443b7aa08ffccd2e1cd5f/FLAGd01afbfb2 [2022-11-18 20:42:22,775 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:42:22,778 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-18 20:42:22,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/data/dc743baf0/dd68900395d443b7aa08ffccd2e1cd5f/FLAGd01afbfb2 [2022-11-18 20:42:23,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/data/dc743baf0/dd68900395d443b7aa08ffccd2e1cd5f [2022-11-18 20:42:23,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:42:23,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:42:23,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:42:23,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:42:23,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:42:23,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2967ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23, skipping insertion in model container [2022-11-18 20:42:23,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:42:23,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:42:23,478 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_24982f64-d2e2-40c3-a08b-c9d0a1819485/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-18 20:42:23,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:42:23,514 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:42:23,575 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_24982f64-d2e2-40c3-a08b-c9d0a1819485/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-18 20:42:23,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:42:23,612 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:42:23,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23 WrapperNode [2022-11-18 20:42:23,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:42:23,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:42:23,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:42:23,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:42:23,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,715 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 353 [2022-11-18 20:42:23,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:42:23,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:42:23,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:42:23,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:42:23,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,794 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:42:23,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:42:23,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:42:23,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:42:23,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (1/1) ... [2022-11-18 20:42:23,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:42:23,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:42:23,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:42:23,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:42:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:42:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:42:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:42:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:42:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:42:23,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:42:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:42:23,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:42:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:42:23,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:42:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:42:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:42:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:42:23,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:42:23,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:42:23,917 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:42:24,094 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:42:24,097 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:42:24,998 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:42:25,027 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:42:25,034 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:42:25,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:42:25 BoogieIcfgContainer [2022-11-18 20:42:25,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:42:25,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:42:25,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:42:25,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:42:25,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:42:23" (1/3) ... [2022-11-18 20:42:25,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd2b737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:42:25, skipping insertion in model container [2022-11-18 20:42:25,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:42:23" (2/3) ... [2022-11-18 20:42:25,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd2b737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:42:25, skipping insertion in model container [2022-11-18 20:42:25,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:42:25" (3/3) ... [2022-11-18 20:42:25,051 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2022-11-18 20:42:25,061 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:42:25,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:42:25,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-18 20:42:25,075 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:42:25,369 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:42:25,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 472 places, 501 transitions, 1026 flow [2022-11-18 20:42:25,752 INFO L130 PetriNetUnfolder]: 39/498 cut-off events. [2022-11-18 20:42:25,752 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:42:25,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 39/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1043 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 303. Up to 2 conditions per place. [2022-11-18 20:42:25,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 472 places, 501 transitions, 1026 flow [2022-11-18 20:42:25,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 473 transitions, 964 flow [2022-11-18 20:42:25,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:42:25,827 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;@4f96c9c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:42:25,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-18 20:42:25,845 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-18 20:42:25,849 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:42:25,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:42:25,851 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] [2022-11-18 20:42:25,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 20:42:25,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:25,859 INFO L85 PathProgramCache]: Analyzing trace with hash -789370683, now seen corresponding path program 1 times [2022-11-18 20:42:25,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:25,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736055593] [2022-11-18 20:42:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:25,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:26,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:26,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736055593] [2022-11-18 20:42:26,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736055593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:42:26,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:42:26,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:42:26,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796130406] [2022-11-18 20:42:26,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:42:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:42:26,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:26,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:42:26,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:42:26,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-18 20:42:26,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 473 transitions, 964 flow. Second operand has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:26,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:42:26,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-18 20:42:26,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:42:27,086 INFO L130 PetriNetUnfolder]: 31/810 cut-off events. [2022-11-18 20:42:27,086 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-18 20:42:27,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 810 events. 31/810 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3102 event pairs, 0 based on Foata normal form. 44/720 useless extension candidates. Maximal degree in co-relation 550. Up to 45 conditions per place. [2022-11-18 20:42:27,103 INFO L137 encePairwiseOnDemand]: 459/501 looper letters, 60 selfloop transitions, 14 changer transitions 8/483 dead transitions. [2022-11-18 20:42:27,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 483 transitions, 1150 flow [2022-11-18 20:42:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:42:27,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:42:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2293 transitions. [2022-11-18 20:42:27,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153692614770459 [2022-11-18 20:42:27,141 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2293 transitions. [2022-11-18 20:42:27,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2293 transitions. [2022-11-18 20:42:27,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:42:27,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2293 transitions. [2022-11-18 20:42:27,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 458.6) internal successors, (2293), 5 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:27,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:27,183 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:27,186 INFO L175 Difference]: Start difference. First operand has 445 places, 473 transitions, 964 flow. Second operand 5 states and 2293 transitions. [2022-11-18 20:42:27,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 483 transitions, 1150 flow [2022-11-18 20:42:27,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 483 transitions, 1126 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:42:27,207 INFO L231 Difference]: Finished difference. Result has 446 places, 454 transitions, 996 flow [2022-11-18 20:42:27,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=996, PETRI_PLACES=446, PETRI_TRANSITIONS=454} [2022-11-18 20:42:27,214 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 1 predicate places. [2022-11-18 20:42:27,215 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 454 transitions, 996 flow [2022-11-18 20:42:27,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:27,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:42:27,217 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] [2022-11-18 20:42:27,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:42:27,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 20:42:27,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:27,219 INFO L85 PathProgramCache]: Analyzing trace with hash -955416257, now seen corresponding path program 1 times [2022-11-18 20:42:27,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:27,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008816487] [2022-11-18 20:42:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:27,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:27,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:27,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008816487] [2022-11-18 20:42:27,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008816487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:42:27,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168369579] [2022-11-18 20:42:27,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:27,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:27,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:42:27,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:42:27,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:42:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:27,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:42:27,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:27,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:42:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:27,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168369579] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:42:27,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:42:27,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:42:27,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387147562] [2022-11-18 20:42:27,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:42:27,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:42:27,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:27,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:42:27,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:42:28,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-18 20:42:28,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 454 transitions, 996 flow. Second operand has 12 states, 12 states have (on average 437.6666666666667) internal successors, (5252), 12 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:28,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:42:28,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-18 20:42:28,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:42:29,376 INFO L130 PetriNetUnfolder]: 76/1877 cut-off events. [2022-11-18 20:42:29,376 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-18 20:42:29,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 1877 events. 76/1877 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11423 event pairs, 0 based on Foata normal form. 9/1591 useless extension candidates. Maximal degree in co-relation 1368. Up to 36 conditions per place. [2022-11-18 20:42:29,415 INFO L137 encePairwiseOnDemand]: 478/501 looper letters, 114 selfloop transitions, 62 changer transitions 0/577 dead transitions. [2022-11-18 20:42:29,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 577 transitions, 1696 flow [2022-11-18 20:42:29,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:42:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:42:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 8015 transitions. [2022-11-18 20:42:29,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8887779995564427 [2022-11-18 20:42:29,433 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 8015 transitions. [2022-11-18 20:42:29,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 8015 transitions. [2022-11-18 20:42:29,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:42:29,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 8015 transitions. [2022-11-18 20:42:29,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 445.27777777777777) internal successors, (8015), 18 states have internal predecessors, (8015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:29,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 501.0) internal successors, (9519), 19 states have internal predecessors, (9519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:29,491 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 501.0) internal successors, (9519), 19 states have internal predecessors, (9519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:29,492 INFO L175 Difference]: Start difference. First operand has 446 places, 454 transitions, 996 flow. Second operand 18 states and 8015 transitions. [2022-11-18 20:42:29,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 577 transitions, 1696 flow [2022-11-18 20:42:29,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 577 transitions, 1688 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:42:29,507 INFO L231 Difference]: Finished difference. Result has 458 places, 496 transitions, 1358 flow [2022-11-18 20:42:29,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1358, PETRI_PLACES=458, PETRI_TRANSITIONS=496} [2022-11-18 20:42:29,510 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 13 predicate places. [2022-11-18 20:42:29,510 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 496 transitions, 1358 flow [2022-11-18 20:42:29,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 437.6666666666667) internal successors, (5252), 12 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:29,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:42:29,515 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] [2022-11-18 20:42:29,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:42:29,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 20:42:29,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 20:42:29,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:29,722 INFO L85 PathProgramCache]: Analyzing trace with hash 446868092, now seen corresponding path program 1 times [2022-11-18 20:42:29,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:29,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247707240] [2022-11-18 20:42:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:29,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:29,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:29,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247707240] [2022-11-18 20:42:29,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247707240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:42:29,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163412025] [2022-11-18 20:42:29,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:29,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:29,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:42:29,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:42:29,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:42:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:30,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:42:30,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:30,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:42:30,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163412025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:42:30,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:42:30,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:42:30,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568767754] [2022-11-18 20:42:30,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:42:30,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:42:30,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:30,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:42:30,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:42:30,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-18 20:42:30,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 496 transitions, 1358 flow. Second operand has 6 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:30,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:42:30,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-18 20:42:30,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:42:30,976 INFO L130 PetriNetUnfolder]: 76/1865 cut-off events. [2022-11-18 20:42:30,977 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-11-18 20:42:31,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 1865 events. 76/1865 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11344 event pairs, 0 based on Foata normal form. 12/1582 useless extension candidates. Maximal degree in co-relation 1722. Up to 72 conditions per place. [2022-11-18 20:42:31,017 INFO L137 encePairwiseOnDemand]: 484/501 looper letters, 61 selfloop transitions, 43 changer transitions 0/505 dead transitions. [2022-11-18 20:42:31,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 505 transitions, 1539 flow [2022-11-18 20:42:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:42:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:42:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3119 transitions. [2022-11-18 20:42:31,026 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.889364128885087 [2022-11-18 20:42:31,027 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3119 transitions. [2022-11-18 20:42:31,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3119 transitions. [2022-11-18 20:42:31,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:42:31,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3119 transitions. [2022-11-18 20:42:31,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.57142857142856) internal successors, (3119), 7 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:31,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 501.0) internal successors, (4008), 8 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:31,050 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 501.0) internal successors, (4008), 8 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:31,051 INFO L175 Difference]: Start difference. First operand has 458 places, 496 transitions, 1358 flow. Second operand 7 states and 3119 transitions. [2022-11-18 20:42:31,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 505 transitions, 1539 flow [2022-11-18 20:42:31,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 505 transitions, 1423 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 20:42:31,070 INFO L231 Difference]: Finished difference. Result has 452 places, 484 transitions, 1247 flow [2022-11-18 20:42:31,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1247, PETRI_PLACES=452, PETRI_TRANSITIONS=484} [2022-11-18 20:42:31,072 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 7 predicate places. [2022-11-18 20:42:31,073 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 484 transitions, 1247 flow [2022-11-18 20:42:31,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:31,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:42:31,075 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] [2022-11-18 20:42:31,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:42:31,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:31,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 20:42:31,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:31,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1481190213, now seen corresponding path program 2 times [2022-11-18 20:42:31,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:31,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112859721] [2022-11-18 20:42:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:31,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:31,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:31,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112859721] [2022-11-18 20:42:31,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112859721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:42:31,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053830263] [2022-11-18 20:42:31,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:42:31,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:31,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:42:31,555 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:42:31,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:42:31,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:42:31,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:42:31,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:42:31,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:42:31,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:42:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:42:32,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053830263] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:42:32,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:42:32,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:42:32,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049563943] [2022-11-18 20:42:32,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:42:32,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:42:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:42:32,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:42:32,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 501 [2022-11-18 20:42:32,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 484 transitions, 1247 flow. Second operand has 18 states, 18 states have (on average 412.6111111111111) internal successors, (7427), 18 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:32,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:42:32,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 501 [2022-11-18 20:42:32,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:42:36,114 INFO L130 PetriNetUnfolder]: 1086/11053 cut-off events. [2022-11-18 20:42:36,114 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2022-11-18 20:42:36,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12610 conditions, 11053 events. 1086/11053 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 124463 event pairs, 392 based on Foata normal form. 6/8588 useless extension candidates. Maximal degree in co-relation 10285. Up to 189 conditions per place. [2022-11-18 20:42:36,302 INFO L137 encePairwiseOnDemand]: 474/501 looper letters, 203 selfloop transitions, 81 changer transitions 0/659 dead transitions. [2022-11-18 20:42:36,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 659 transitions, 2268 flow [2022-11-18 20:42:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:42:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 20:42:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10106 transitions. [2022-11-18 20:42:36,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8404856952761144 [2022-11-18 20:42:36,326 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10106 transitions. [2022-11-18 20:42:36,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10106 transitions. [2022-11-18 20:42:36,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:42:36,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10106 transitions. [2022-11-18 20:42:36,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 421.0833333333333) internal successors, (10106), 24 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:36,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:36,384 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:36,385 INFO L175 Difference]: Start difference. First operand has 452 places, 484 transitions, 1247 flow. Second operand 24 states and 10106 transitions. [2022-11-18 20:42:36,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 659 transitions, 2268 flow [2022-11-18 20:42:36,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 659 transitions, 2177 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:42:36,403 INFO L231 Difference]: Finished difference. Result has 464 places, 500 transitions, 1410 flow [2022-11-18 20:42:36,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1410, PETRI_PLACES=464, PETRI_TRANSITIONS=500} [2022-11-18 20:42:36,406 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 19 predicate places. [2022-11-18 20:42:36,406 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 500 transitions, 1410 flow [2022-11-18 20:42:36,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 412.6111111111111) internal successors, (7427), 18 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:36,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:42:36,409 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:36,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:42:36,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:36,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 20:42:36,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:36,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1744759366, now seen corresponding path program 1 times [2022-11-18 20:42:36,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:36,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836342154] [2022-11-18 20:42:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:36,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:36,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:36,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836342154] [2022-11-18 20:42:36,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836342154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:42:36,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:42:36,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:42:36,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887249551] [2022-11-18 20:42:36,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:42:36,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:42:36,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:36,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:42:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:42:36,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 501 [2022-11-18 20:42:36,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 500 transitions, 1410 flow. Second operand has 7 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:36,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:42:36,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 501 [2022-11-18 20:42:36,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:42:42,073 INFO L130 PetriNetUnfolder]: 2207/20708 cut-off events. [2022-11-18 20:42:42,073 INFO L131 PetriNetUnfolder]: For 628/718 co-relation queries the response was YES. [2022-11-18 20:42:42,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24065 conditions, 20708 events. 2207/20708 cut-off events. For 628/718 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 257220 event pairs, 912 based on Foata normal form. 0/16251 useless extension candidates. Maximal degree in co-relation 2664. Up to 1788 conditions per place. [2022-11-18 20:42:42,327 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 158 selfloop transitions, 43 changer transitions 0/602 dead transitions. [2022-11-18 20:42:42,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 602 transitions, 2210 flow [2022-11-18 20:42:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:42:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:42:42,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4796 transitions. [2022-11-18 20:42:42,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8702594810379242 [2022-11-18 20:42:42,339 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4796 transitions. [2022-11-18 20:42:42,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4796 transitions. [2022-11-18 20:42:42,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:42:42,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4796 transitions. [2022-11-18 20:42:42,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 436.0) internal successors, (4796), 11 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:42,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:42,365 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:42,365 INFO L175 Difference]: Start difference. First operand has 464 places, 500 transitions, 1410 flow. Second operand 11 states and 4796 transitions. [2022-11-18 20:42:42,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 602 transitions, 2210 flow [2022-11-18 20:42:42,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 602 transitions, 2030 flow, removed 19 selfloop flow, removed 15 redundant places. [2022-11-18 20:42:42,379 INFO L231 Difference]: Finished difference. Result has 462 places, 517 transitions, 1467 flow [2022-11-18 20:42:42,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1467, PETRI_PLACES=462, PETRI_TRANSITIONS=517} [2022-11-18 20:42:42,383 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 17 predicate places. [2022-11-18 20:42:42,384 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 517 transitions, 1467 flow [2022-11-18 20:42:42,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:42,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:42:42,385 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:42,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:42:42,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 20:42:42,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:42,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1203227791, now seen corresponding path program 1 times [2022-11-18 20:42:42,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:42,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184632855] [2022-11-18 20:42:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:42,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:42,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:42,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184632855] [2022-11-18 20:42:42,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184632855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:42:42,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:42:42,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:42:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36298284] [2022-11-18 20:42:42,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:42:42,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:42:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:42,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:42:42,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:42:42,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 501 [2022-11-18 20:42:42,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 517 transitions, 1467 flow. Second operand has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:42,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:42:42,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 501 [2022-11-18 20:42:42,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:42:45,586 INFO L130 PetriNetUnfolder]: 1944/13030 cut-off events. [2022-11-18 20:42:45,586 INFO L131 PetriNetUnfolder]: For 1772/1856 co-relation queries the response was YES. [2022-11-18 20:42:45,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16937 conditions, 13030 events. 1944/13030 cut-off events. For 1772/1856 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 143861 event pairs, 921 based on Foata normal form. 84/10466 useless extension candidates. Maximal degree in co-relation 10919. Up to 1980 conditions per place. [2022-11-18 20:42:45,756 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 154 selfloop transitions, 43 changer transitions 0/600 dead transitions. [2022-11-18 20:42:45,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 600 transitions, 2135 flow [2022-11-18 20:42:45,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:42:45,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:42:45,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4792 transitions. [2022-11-18 20:42:45,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695336599528216 [2022-11-18 20:42:45,768 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4792 transitions. [2022-11-18 20:42:45,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4792 transitions. [2022-11-18 20:42:45,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:42:45,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4792 transitions. [2022-11-18 20:42:45,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 435.6363636363636) internal successors, (4792), 11 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:45,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:45,796 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:45,796 INFO L175 Difference]: Start difference. First operand has 462 places, 517 transitions, 1467 flow. Second operand 11 states and 4792 transitions. [2022-11-18 20:42:45,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 600 transitions, 2135 flow [2022-11-18 20:42:45,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 600 transitions, 2130 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:42:45,816 INFO L231 Difference]: Finished difference. Result has 472 places, 519 transitions, 1560 flow [2022-11-18 20:42:45,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1560, PETRI_PLACES=472, PETRI_TRANSITIONS=519} [2022-11-18 20:42:45,818 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 27 predicate places. [2022-11-18 20:42:45,818 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 519 transitions, 1560 flow [2022-11-18 20:42:45,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:45,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:42:45,820 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:45,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:42:45,821 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 20:42:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1859295929, now seen corresponding path program 1 times [2022-11-18 20:42:45,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:45,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475702421] [2022-11-18 20:42:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:45,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:46,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:46,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475702421] [2022-11-18 20:42:46,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475702421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:42:46,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:42:46,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:42:46,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83642069] [2022-11-18 20:42:46,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:42:46,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:42:46,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:42:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:42:46,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 501 [2022-11-18 20:42:46,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 519 transitions, 1560 flow. Second operand has 7 states, 7 states have (on average 424.7142857142857) internal successors, (2973), 7 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:46,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:42:46,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 501 [2022-11-18 20:42:46,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:42:50,470 INFO L130 PetriNetUnfolder]: 2700/16604 cut-off events. [2022-11-18 20:42:50,470 INFO L131 PetriNetUnfolder]: For 3635/3761 co-relation queries the response was YES. [2022-11-18 20:42:50,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22361 conditions, 16604 events. 2700/16604 cut-off events. For 3635/3761 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 182412 event pairs, 1144 based on Foata normal form. 126/13497 useless extension candidates. Maximal degree in co-relation 15086. Up to 2934 conditions per place. [2022-11-18 20:42:50,669 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 153 selfloop transitions, 43 changer transitions 0/598 dead transitions. [2022-11-18 20:42:50,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 598 transitions, 2218 flow [2022-11-18 20:42:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:42:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:42:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4758 transitions. [2022-11-18 20:42:50,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633641807294502 [2022-11-18 20:42:50,680 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4758 transitions. [2022-11-18 20:42:50,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4758 transitions. [2022-11-18 20:42:50,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:42:50,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4758 transitions. [2022-11-18 20:42:50,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 432.54545454545456) internal successors, (4758), 11 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:50,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:50,705 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:50,705 INFO L175 Difference]: Start difference. First operand has 472 places, 519 transitions, 1560 flow. Second operand 11 states and 4758 transitions. [2022-11-18 20:42:50,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 598 transitions, 2218 flow [2022-11-18 20:42:50,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 598 transitions, 2178 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:42:50,734 INFO L231 Difference]: Finished difference. Result has 479 places, 521 transitions, 1618 flow [2022-11-18 20:42:50,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1618, PETRI_PLACES=479, PETRI_TRANSITIONS=521} [2022-11-18 20:42:50,736 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 34 predicate places. [2022-11-18 20:42:50,737 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 521 transitions, 1618 flow [2022-11-18 20:42:50,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 424.7142857142857) internal successors, (2973), 7 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:50,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:42:50,738 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:50,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:42:50,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 20:42:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1842500036, now seen corresponding path program 1 times [2022-11-18 20:42:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:50,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498034758] [2022-11-18 20:42:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:50,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:52,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:52,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498034758] [2022-11-18 20:42:52,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498034758] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:42:52,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708354725] [2022-11-18 20:42:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:52,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:52,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:42:52,776 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:42:52,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24982f64-d2e2-40c3-a08b-c9d0a1819485/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:42:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:52,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 20:42:52,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:53,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:42:53,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:42:54,376 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:42:54,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:42:54,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:42:54,845 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:42:54,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:42:55,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:42:55,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:42:55,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:42:55,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-18 20:42:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:55,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:42:55,607 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_189 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_189) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-18 20:42:58,382 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:42:58,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-11-18 20:42:58,400 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:42:58,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 136 [2022-11-18 20:42:58,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2022-11-18 20:42:58,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2022-11-18 20:42:59,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:42:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:42:59,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708354725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:42:59,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:42:59,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 26] total 69 [2022-11-18 20:42:59,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42630069] [2022-11-18 20:42:59,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:42:59,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-18 20:42:59,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:59,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-18 20:42:59,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=4347, Unknown=21, NotChecked=134, Total=4830 [2022-11-18 20:42:59,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 501 [2022-11-18 20:42:59,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 521 transitions, 1618 flow. Second operand has 70 states, 70 states have (on average 317.9) internal successors, (22253), 70 states have internal predecessors, (22253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:59,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:42:59,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 501 [2022-11-18 20:42:59,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand