./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R --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 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 --- 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-38b53e6 [2022-11-25 16:58:55,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:58:55,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:58:55,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:58:55,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:58:55,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:58:55,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:58:55,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:58:55,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:58:55,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:58:55,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:58:55,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:58:55,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:58:55,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:58:55,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:58:55,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:58:55,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:58:55,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:58:55,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:58:55,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:58:55,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:58:55,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:58:55,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:58:55,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:58:55,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:58:55,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:58:55,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:58:55,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:58:55,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:58:55,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:58:55,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:58:55,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:58:55,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:58:55,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:58:55,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:58:55,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:58:55,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:58:55,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:58:55,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:58:55,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:58:55,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:58:55,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 16:58:55,812 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:58:55,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:58:55,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:58:55,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:58:55,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:58:55,815 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:58:55,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:58:55,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:58:55,816 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:58:55,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:58:55,817 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:58:55,818 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:58:55,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:58:55,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:58:55,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:58:55,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:58:55,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:58:55,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:58:55,819 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:58:55,820 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:58:55,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:58:55,820 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:58:55,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:58:55,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:58:55,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:58:55,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:58:55,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:58:55,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:58:55,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:58:55,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:58:55,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:58:55,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:58:55,823 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:58:55,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:58:55,824 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:58:55,824 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:58:55,824 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 [2022-11-25 16:58:56,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:58:56,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:58:56,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:58:56,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:58:56,153 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:58:56,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-25 16:58:59,260 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:58:59,485 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:58:59,485 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-25 16:58:59,493 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/data/ff7918513/1fda3b944079493ab3b88d6669ebdee5/FLAG9f167a5ec [2022-11-25 16:58:59,509 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/data/ff7918513/1fda3b944079493ab3b88d6669ebdee5 [2022-11-25 16:58:59,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:58:59,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:58:59,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:58:59,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:58:59,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:58:59,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@761bedc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59, skipping insertion in model container [2022-11-25 16:58:59,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:58:59,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:58:59,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:59,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:59,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:59,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:59,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:59,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:59,775 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-25 16:58:59,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:58:59,794 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:58:59,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:59,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:59,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:59,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:59,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:59,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:59,836 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-25 16:58:59,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:58:59,854 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:58:59,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59 WrapperNode [2022-11-25 16:58:59,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:58:59,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:58:59,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:58:59,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:58:59,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,931 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 333 [2022-11-25 16:58:59,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:58:59,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:58:59,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:58:59,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:58:59,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,966 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:58:59,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:58:59,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:58:59,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:58:59,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (1/1) ... [2022-11-25 16:58:59,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:59:00,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:00,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:59:00,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:59:00,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:59:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:59:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:59:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:59:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 16:59:00,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 16:59:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 16:59:00,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 16:59:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 16:59:00,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 16:59:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:59:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 16:59:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 16:59:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 16:59:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:59:00,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:59:00,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:59:00,078 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:59:00,308 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:59:00,310 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:59:00,973 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:59:01,627 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:59:01,628 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-25 16:59:01,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:59:01 BoogieIcfgContainer [2022-11-25 16:59:01,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:59:01,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:59:01,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:59:01,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:59:01,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:58:59" (1/3) ... [2022-11-25 16:59:01,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cf72f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:59:01, skipping insertion in model container [2022-11-25 16:59:01,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:59" (2/3) ... [2022-11-25 16:59:01,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cf72f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:59:01, skipping insertion in model container [2022-11-25 16:59:01,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:59:01" (3/3) ... [2022-11-25 16:59:01,647 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2022-11-25 16:59:01,657 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:59:01,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:59:01,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-11-25 16:59:01,670 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:59:01,859 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 16:59:01,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 306 transitions, 636 flow [2022-11-25 16:59:02,098 INFO L130 PetriNetUnfolder]: 25/303 cut-off events. [2022-11-25 16:59:02,099 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:59:02,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 303 events. 25/303 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 596 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 232. Up to 2 conditions per place. [2022-11-25 16:59:02,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 306 transitions, 636 flow [2022-11-25 16:59:02,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 282 transitions, 579 flow [2022-11-25 16:59:02,129 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:59:02,155 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 282 transitions, 579 flow [2022-11-25 16:59:02,163 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 282 transitions, 579 flow [2022-11-25 16:59:02,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 282 transitions, 579 flow [2022-11-25 16:59:02,254 INFO L130 PetriNetUnfolder]: 24/282 cut-off events. [2022-11-25 16:59:02,254 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:59:02,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 282 events. 24/282 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 586 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 232. Up to 2 conditions per place. [2022-11-25 16:59:02,270 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2022-11-25 16:59:28,127 INFO L134 LiptonReduction]: Checked pairs total: 25336 [2022-11-25 16:59:28,127 INFO L136 LiptonReduction]: Total number of compositions: 321 [2022-11-25 16:59:28,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:59:28,146 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;@78f677ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:59:28,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-11-25 16:59:28,150 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 16:59:28,150 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:59:28,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:28,151 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:59:28,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-25 16:59:28,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:28,156 INFO L85 PathProgramCache]: Analyzing trace with hash 52171, now seen corresponding path program 1 times [2022-11-25 16:59:28,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:28,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634029316] [2022-11-25 16:59:28,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:28,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:28,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:28,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634029316] [2022-11-25 16:59:28,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634029316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:28,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:28,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:59:28,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511098522] [2022-11-25 16:59:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:28,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:59:28,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:28,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:59:28,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:59:28,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 627 [2022-11-25 16:59:28,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 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) [2022-11-25 16:59:28,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:28,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 627 [2022-11-25 16:59:28,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:34,867 INFO L130 PetriNetUnfolder]: 26827/36349 cut-off events. [2022-11-25 16:59:34,868 INFO L131 PetriNetUnfolder]: For 1216/1216 co-relation queries the response was YES. [2022-11-25 16:59:34,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73685 conditions, 36349 events. 26827/36349 cut-off events. For 1216/1216 co-relation queries the response was YES. Maximal size of possible extension queue 2385. Compared 223041 event pairs, 20520 based on Foata normal form. 0/13063 useless extension candidates. Maximal degree in co-relation 34479. Up to 18135 conditions per place. [2022-11-25 16:59:35,108 INFO L137 encePairwiseOnDemand]: 613/627 looper letters, 105 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2022-11-25 16:59:35,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 112 transitions, 472 flow [2022-11-25 16:59:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:59:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:59:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 890 transitions. [2022-11-25 16:59:35,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4731525784157363 [2022-11-25 16:59:35,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 890 transitions. [2022-11-25 16:59:35,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 890 transitions. [2022-11-25 16:59:35,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:35,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 890 transitions. [2022-11-25 16:59:35,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 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) [2022-11-25 16:59:35,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 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) [2022-11-25 16:59:35,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 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) [2022-11-25 16:59:35,170 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 147 flow. Second operand 3 states and 890 transitions. [2022-11-25 16:59:35,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 112 transitions, 472 flow [2022-11-25 16:59:35,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 112 transitions, 454 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 16:59:35,195 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 162 flow [2022-11-25 16:59:35,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2022-11-25 16:59:35,203 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2022-11-25 16:59:35,204 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 162 flow [2022-11-25 16:59:35,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 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) [2022-11-25 16:59:35,210 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:35,210 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:59:35,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:59:35,211 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-25 16:59:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:35,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1621019, now seen corresponding path program 1 times [2022-11-25 16:59:35,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:35,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979586460] [2022-11-25 16:59:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:35,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:35,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979586460] [2022-11-25 16:59:35,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979586460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:35,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:35,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:59:35,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744836203] [2022-11-25 16:59:35,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:35,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:59:35,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:35,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:59:35,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:59:35,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 627 [2022-11-25 16:59:35,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 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) [2022-11-25 16:59:35,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:35,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 627 [2022-11-25 16:59:35,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:40,343 INFO L130 PetriNetUnfolder]: 26827/36347 cut-off events. [2022-11-25 16:59:40,343 INFO L131 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2022-11-25 16:59:40,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73329 conditions, 36347 events. 26827/36347 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 2407. Compared 224861 event pairs, 20520 based on Foata normal form. 0/13021 useless extension candidates. Maximal degree in co-relation 36653. Up to 36261 conditions per place. [2022-11-25 16:59:40,527 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 57 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2022-11-25 16:59:40,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 270 flow [2022-11-25 16:59:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:59:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:59:40,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2022-11-25 16:59:40,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4370015948963317 [2022-11-25 16:59:40,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2022-11-25 16:59:40,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2022-11-25 16:59:40,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:40,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2022-11-25 16:59:40,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 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) [2022-11-25 16:59:40,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 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) [2022-11-25 16:59:40,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 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) [2022-11-25 16:59:40,542 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 162 flow. Second operand 3 states and 822 transitions. [2022-11-25 16:59:40,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 270 flow [2022-11-25 16:59:40,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:59:40,545 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 148 flow [2022-11-25 16:59:40,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2022-11-25 16:59:40,547 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2022-11-25 16:59:40,547 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 148 flow [2022-11-25 16:59:40,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 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) [2022-11-25 16:59:40,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:40,549 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:59:40,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:59:40,549 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-25 16:59:40,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1621062, now seen corresponding path program 1 times [2022-11-25 16:59:40,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:40,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412626375] [2022-11-25 16:59:40,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:40,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:40,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:40,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412626375] [2022-11-25 16:59:40,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412626375] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:59:40,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794018721] [2022-11-25 16:59:40,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:40,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:40,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:40,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:59:40,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:59:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:40,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:59:40,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:40,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:59:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:40,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794018721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:59:40,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:59:40,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-25 16:59:40,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483209487] [2022-11-25 16:59:40,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:59:40,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:59:40,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:40,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:59:40,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:59:41,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 627 [2022-11-25 16:59:41,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 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) [2022-11-25 16:59:41,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:41,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 627 [2022-11-25 16:59:41,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:52,064 INFO L130 PetriNetUnfolder]: 67066/90863 cut-off events. [2022-11-25 16:59:52,064 INFO L131 PetriNetUnfolder]: For 687/687 co-relation queries the response was YES. [2022-11-25 16:59:52,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183294 conditions, 90863 events. 67066/90863 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 5002. Compared 605082 event pairs, 51300 based on Foata normal form. 0/32730 useless extension candidates. Maximal degree in co-relation 183286. Up to 18133 conditions per place. [2022-11-25 16:59:52,749 INFO L137 encePairwiseOnDemand]: 621/627 looper letters, 250 selfloop transitions, 13 changer transitions 0/266 dead transitions. [2022-11-25 16:59:52,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 266 transitions, 1126 flow [2022-11-25 16:59:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:59:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:59:52,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1799 transitions. [2022-11-25 16:59:52,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47820308346624135 [2022-11-25 16:59:52,757 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1799 transitions. [2022-11-25 16:59:52,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1799 transitions. [2022-11-25 16:59:52,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:52,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1799 transitions. [2022-11-25 16:59:52,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 299.8333333333333) internal successors, (1799), 6 states have internal predecessors, (1799), 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) [2022-11-25 16:59:52,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 627.0) internal successors, (4389), 7 states have internal predecessors, (4389), 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) [2022-11-25 16:59:52,776 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 627.0) internal successors, (4389), 7 states have internal predecessors, (4389), 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) [2022-11-25 16:59:52,777 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 148 flow. Second operand 6 states and 1799 transitions. [2022-11-25 16:59:52,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 266 transitions, 1126 flow [2022-11-25 16:59:52,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 266 transitions, 1125 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:59:52,785 INFO L231 Difference]: Finished difference. Result has 66 places, 70 transitions, 240 flow [2022-11-25 16:59:52,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2022-11-25 16:59:52,789 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2022-11-25 16:59:52,789 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 240 flow [2022-11-25 16:59:52,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 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) [2022-11-25 16:59:52,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:52,795 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 16:59:52,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:59:53,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:53,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-25 16:59:53,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:53,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1050828790, now seen corresponding path program 2 times [2022-11-25 16:59:53,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:53,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547994471] [2022-11-25 16:59:53,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:53,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:53,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:53,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547994471] [2022-11-25 16:59:53,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547994471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:59:53,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230345506] [2022-11-25 16:59:53,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:59:53,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:53,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:53,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:59:53,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c55becb8-402c-4f18-a9bd-72f986702d59/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:59:53,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 16:59:53,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:59:53,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:59:53,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 16:59:53,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:59:53,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230345506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:53,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:59:53,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 16:59:53,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414919012] [2022-11-25 16:59:53,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:53,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:59:53,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:53,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:59:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:59:53,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 627 [2022-11-25 16:59:53,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 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) [2022-11-25 16:59:53,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:53,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 627 [2022-11-25 16:59:53,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand