./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.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_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/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_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/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_d187bdfd-87aa-4627-be43-ecd43a5da67e/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 e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --- 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 17:05:37,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:05:37,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:05:37,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:05:37,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:05:37,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:05:37,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:05:37,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:05:37,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:05:37,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:05:37,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:05:37,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:05:37,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:05:37,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:05:37,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:05:37,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:05:37,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:05:37,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:05:37,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:05:37,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:05:37,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:05:37,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:05:37,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:05:37,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:05:37,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:05:37,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:05:37,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:05:37,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:05:37,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:05:37,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:05:37,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:05:37,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:05:37,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:05:37,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:05:37,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:05:37,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:05:37,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:05:37,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:05:37,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:05:37,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:05:37,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:05:37,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:05:37,136 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:05:37,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:05:37,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:05:37,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:05:37,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:05:37,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:05:37,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:05:37,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:05:37,140 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:05:37,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:05:37,141 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:05:37,141 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:05:37,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:05:37,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:05:37,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:05:37,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:05:37,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:05:37,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:05:37,143 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:05:37,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:05:37,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:05:37,143 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:05:37,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:05:37,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:05:37,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:05:37,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:05:37,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:05:37,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:05:37,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:05:37,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:05:37,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:05:37,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:05:37,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:05:37,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:05:37,146 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:05:37,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:05:37,147 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_d187bdfd-87aa-4627-be43-ecd43a5da67e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d [2022-11-25 17:05:37,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:05:37,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:05:37,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:05:37,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:05:37,506 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:05:37,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-25 17:05:40,771 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:05:41,015 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:05:41,018 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-25 17:05:41,030 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/data/a216faa6a/7ca2bd4f2e744f1b87f87fd1451556d4/FLAG89c6c32eb [2022-11-25 17:05:41,054 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/data/a216faa6a/7ca2bd4f2e744f1b87f87fd1451556d4 [2022-11-25 17:05:41,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:05:41,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:05:41,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:05:41,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:05:41,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:05:41,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3b82a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41, skipping insertion in model container [2022-11-25 17:05:41,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:05:41,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:05:41,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:41,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:41,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:41,410 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:41,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:41,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:41,436 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_d187bdfd-87aa-4627-be43-ecd43a5da67e/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-25 17:05:41,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:05:41,456 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:05:41,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:41,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:41,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:41,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:41,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:41,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:41,516 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_d187bdfd-87aa-4627-be43-ecd43a5da67e/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-25 17:05:41,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:05:41,547 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:05:41,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41 WrapperNode [2022-11-25 17:05:41,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:05:41,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:05:41,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:05:41,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:05:41,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,607 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 418 [2022-11-25 17:05:41,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:05:41,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:05:41,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:05:41,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:05:41,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,670 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:05:41,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:05:41,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:05:41,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:05:41,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (1/1) ... [2022-11-25 17:05:41,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:05:41,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:05:41,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:05:41,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:05:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:05:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:05:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:05:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:05:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:05:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 17:05:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:05:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:05:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:05:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:05:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:05:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:05:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:05:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:05:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:05:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:05:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:05:41,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:05:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:05:41,777 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 17:05:41,908 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:05:41,924 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:05:42,580 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:05:43,041 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:05:43,041 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-25 17:05:43,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:05:43 BoogieIcfgContainer [2022-11-25 17:05:43,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:05:43,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:05:43,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:05:43,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:05:43,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:05:41" (1/3) ... [2022-11-25 17:05:43,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4511e725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:05:43, skipping insertion in model container [2022-11-25 17:05:43,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:41" (2/3) ... [2022-11-25 17:05:43,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4511e725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:05:43, skipping insertion in model container [2022-11-25 17:05:43,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:05:43" (3/3) ... [2022-11-25 17:05:43,060 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2022-11-25 17:05:43,075 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:05:43,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:05:43,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-25 17:05:43,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:05:43,338 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:05:43,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 397 transitions, 818 flow [2022-11-25 17:05:43,619 INFO L130 PetriNetUnfolder]: 35/394 cut-off events. [2022-11-25 17:05:43,619 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:05:43,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 394 events. 35/394 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 894 event pairs, 0 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 316. Up to 2 conditions per place. [2022-11-25 17:05:43,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 397 transitions, 818 flow [2022-11-25 17:05:43,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 373 transitions, 761 flow [2022-11-25 17:05:43,643 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:05:43,666 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 373 transitions, 761 flow [2022-11-25 17:05:43,669 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 373 transitions, 761 flow [2022-11-25 17:05:43,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 373 transitions, 761 flow [2022-11-25 17:05:43,817 INFO L130 PetriNetUnfolder]: 34/373 cut-off events. [2022-11-25 17:05:43,818 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:05:43,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 373 events. 34/373 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 852 event pairs, 0 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 316. Up to 2 conditions per place. [2022-11-25 17:05:43,838 INFO L119 LiptonReduction]: Number of co-enabled transitions 19278 [2022-11-25 17:06:29,688 INFO L134 LiptonReduction]: Checked pairs total: 22797 [2022-11-25 17:06:29,688 INFO L136 LiptonReduction]: Total number of compositions: 456 [2022-11-25 17:06:29,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:06:29,714 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;@6049ce46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:06:29,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2022-11-25 17:06:29,718 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:06:29,718 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:29,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:29,719 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:06:29,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-25 17:06:29,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:29,726 INFO L85 PathProgramCache]: Analyzing trace with hash 64324, now seen corresponding path program 1 times [2022-11-25 17:06:29,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:29,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659933895] [2022-11-25 17:06:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:29,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:30,090 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 17:06:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:30,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659933895] [2022-11-25 17:06:30,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659933895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:30,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:30,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:06:30,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85221493] [2022-11-25 17:06:30,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:30,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:06:30,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:30,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:06:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:06:30,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 853 [2022-11-25 17:06:30,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 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 17:06:30,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:30,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 853 [2022-11-25 17:06:30,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:38,833 INFO L130 PetriNetUnfolder]: 23507/30843 cut-off events. [2022-11-25 17:06:38,834 INFO L131 PetriNetUnfolder]: For 945/945 co-relation queries the response was YES. [2022-11-25 17:06:38,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62640 conditions, 30843 events. 23507/30843 cut-off events. For 945/945 co-relation queries the response was YES. Maximal size of possible extension queue 1849. Compared 180243 event pairs, 15681 based on Foata normal form. 0/12132 useless extension candidates. Maximal degree in co-relation 29288. Up to 15417 conditions per place. [2022-11-25 17:06:39,025 INFO L137 encePairwiseOnDemand]: 833/853 looper letters, 105 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2022-11-25 17:06:39,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 480 flow [2022-11-25 17:06:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:06:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:06:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1156 transitions. [2022-11-25 17:06:39,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4517389605314576 [2022-11-25 17:06:39,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1156 transitions. [2022-11-25 17:06:39,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1156 transitions. [2022-11-25 17:06:39,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:39,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1156 transitions. [2022-11-25 17:06:39,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 385.3333333333333) internal successors, (1156), 3 states have internal predecessors, (1156), 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 17:06:39,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 853.0) internal successors, (3412), 4 states have internal predecessors, (3412), 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 17:06:39,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 853.0) internal successors, (3412), 4 states have internal predecessors, (3412), 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 17:06:39,081 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 155 flow. Second operand 3 states and 1156 transitions. [2022-11-25 17:06:39,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 480 flow [2022-11-25 17:06:39,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 114 transitions, 462 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 17:06:39,120 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 186 flow [2022-11-25 17:06:39,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=853, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2022-11-25 17:06:39,132 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2022-11-25 17:06:39,133 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 186 flow [2022-11-25 17:06:39,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 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 17:06:39,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:39,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:06:39,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:06:39,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-25 17:06:39,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:39,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1997484, now seen corresponding path program 1 times [2022-11-25 17:06:39,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:39,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886414849] [2022-11-25 17:06:39,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:39,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:39,336 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 17:06:39,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:39,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886414849] [2022-11-25 17:06:39,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886414849] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:06:39,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820461363] [2022-11-25 17:06:39,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:39,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:06:39,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:06:39,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:06:39,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:06:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:39,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:06:39,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:06:39,677 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 17:06:39,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:06:39,709 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 17:06:39,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820461363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:06:39,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:06:39,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 17:06:39,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450555105] [2022-11-25 17:06:39,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:06:39,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:06:39,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:06:39,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:06:39,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 853 [2022-11-25 17:06:39,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 342.14285714285717) internal successors, (2395), 7 states have internal predecessors, (2395), 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 17:06:39,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:39,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 853 [2022-11-25 17:06:39,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:57,154 INFO L130 PetriNetUnfolder]: 58730/77061 cut-off events. [2022-11-25 17:06:57,154 INFO L131 PetriNetUnfolder]: For 437/437 co-relation queries the response was YES. [2022-11-25 17:06:57,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155847 conditions, 77061 events. 58730/77061 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 4131. Compared 494358 event pairs, 39189 based on Foata normal form. 0/30365 useless extension candidates. Maximal degree in co-relation 124519. Up to 15423 conditions per place. [2022-11-25 17:06:57,656 INFO L137 encePairwiseOnDemand]: 841/853 looper letters, 243 selfloop transitions, 33 changer transitions 0/279 dead transitions. [2022-11-25 17:06:57,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 279 transitions, 1246 flow [2022-11-25 17:06:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:06:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:06:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2672 transitions. [2022-11-25 17:06:57,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44749623178697034 [2022-11-25 17:06:57,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2672 transitions. [2022-11-25 17:06:57,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2672 transitions. [2022-11-25 17:06:57,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:57,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2672 transitions. [2022-11-25 17:06:57,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 381.7142857142857) internal successors, (2672), 7 states have internal predecessors, (2672), 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 17:06:57,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 853.0) internal successors, (6824), 8 states have internal predecessors, (6824), 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 17:06:57,696 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 853.0) internal successors, (6824), 8 states have internal predecessors, (6824), 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 17:06:57,696 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 186 flow. Second operand 7 states and 2672 transitions. [2022-11-25 17:06:57,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 279 transitions, 1246 flow [2022-11-25 17:06:57,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 279 transitions, 1222 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:06:57,707 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 393 flow [2022-11-25 17:06:57,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=853, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2022-11-25 17:06:57,711 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 0 predicate places. [2022-11-25 17:06:57,712 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 393 flow [2022-11-25 17:06:57,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 342.14285714285717) internal successors, (2395), 7 states have internal predecessors, (2395), 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 17:06:57,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:57,714 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-11-25 17:06:57,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:06:57,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187bdfd-87aa-4627-be43-ecd43a5da67e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 17:06:57,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-25 17:06:57,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:57,924 INFO L85 PathProgramCache]: Analyzing trace with hash 61925445, now seen corresponding path program 1 times [2022-11-25 17:06:57,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:57,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492002004] [2022-11-25 17:06:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:57,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:06:58,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:58,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492002004] [2022-11-25 17:06:58,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492002004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:58,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:58,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:06:58,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032361633] [2022-11-25 17:06:58,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:58,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:06:58,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:58,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:06:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:06:58,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 853 [2022-11-25 17:06:58,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 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 17:06:58,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:58,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 853 [2022-11-25 17:06:58,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand