./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 e04fb08f 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_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/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_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 12:03:12,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:03:12,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:03:12,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:03:12,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:03:12,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:03:12,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:03:12,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:03:12,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:03:12,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:03:12,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:03:12,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:03:12,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:03:12,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:03:12,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:03:12,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:03:12,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:03:12,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:03:12,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:03:12,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:03:12,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:03:12,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:03:12,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:03:12,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:03:12,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:03:12,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:03:12,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:03:12,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:03:12,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:03:12,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:03:12,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:03:12,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:03:12,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:03:12,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:03:12,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:03:12,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:03:12,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:03:12,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:03:12,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:03:12,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:03:12,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:03:12,642 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:03:12,682 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:03:12,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:03:12,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:03:12,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:03:12,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:03:12,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:03:12,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:03:12,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:03:12,686 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:03:12,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:03:12,687 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:03:12,688 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:03:12,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:03:12,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:03:12,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:03:12,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:03:12,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:03:12,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:03:12,689 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:03:12,689 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:03:12,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:03:12,690 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:03:12,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:03:12,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:03:12,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:03:12,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:03:12,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:03:12,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:03:12,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:03:12,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:03:12,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:03:12,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:03:12,694 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:03:12,694 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:03:12,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:03:12,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 [2022-11-16 12:03:12,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:03:12,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:03:12,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:03:12,989 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:03:12,992 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:03:12,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-16 12:03:13,088 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/data/585687b3f/8f9c9548c3c14533bb760001cb3443b7/FLAG20cea736e [2022-11-16 12:03:13,678 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:03:13,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-16 12:03:13,687 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/data/585687b3f/8f9c9548c3c14533bb760001cb3443b7/FLAG20cea736e [2022-11-16 12:03:14,011 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/data/585687b3f/8f9c9548c3c14533bb760001cb3443b7 [2022-11-16 12:03:14,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:03:14,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:03:14,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:03:14,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:03:14,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:03:14,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4685b8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14, skipping insertion in model container [2022-11-16 12:03:14,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:03:14,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:03:14,296 WARN L229 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_bcab8caf-31f5-45ad-8680-d1972fa7f701/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-16 12:03:14,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:03:14,317 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:03:14,343 WARN L229 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_bcab8caf-31f5-45ad-8680-d1972fa7f701/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-16 12:03:14,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:03:14,362 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:03:14,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14 WrapperNode [2022-11-16 12:03:14,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:03:14,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:03:14,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:03:14,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:03:14,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,427 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 333 [2022-11-16 12:03:14,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:03:14,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:03:14,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:03:14,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:03:14,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,469 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:03:14,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:03:14,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:03:14,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:03:14,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (1/1) ... [2022-11-16 12:03:14,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:03:14,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:14,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:03:14,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:03:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:03:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:03:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:03:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:03:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:03:14,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:03:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:03:14,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:03:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:03:14,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:03:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:03:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:03:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:03:14,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:03:14,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:03:14,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:03:14,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:03:14,569 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:03:14,701 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:03:14,704 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:03:15,496 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:03:16,141 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:03:16,142 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-16 12:03:16,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:03:16 BoogieIcfgContainer [2022-11-16 12:03:16,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:03:16,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:03:16,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:03:16,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:03:16,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:03:14" (1/3) ... [2022-11-16 12:03:16,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5028550f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:03:16, skipping insertion in model container [2022-11-16 12:03:16,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:14" (2/3) ... [2022-11-16 12:03:16,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5028550f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:03:16, skipping insertion in model container [2022-11-16 12:03:16,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:03:16" (3/3) ... [2022-11-16 12:03:16,156 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2022-11-16 12:03:16,170 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:03:16,183 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:03:16,183 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-11-16 12:03:16,183 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:03:16,457 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:03:16,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 306 transitions, 636 flow [2022-11-16 12:03:16,637 INFO L130 PetriNetUnfolder]: 25/303 cut-off events. [2022-11-16 12:03:16,639 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:03:16,650 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. [2022-11-16 12:03:16,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 306 transitions, 636 flow [2022-11-16 12:03:16,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 282 transitions, 579 flow [2022-11-16 12:03:16,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:03:16,690 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;@6c96bb0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:03:16,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-11-16 12:03:16,704 INFO L130 PetriNetUnfolder]: 3/68 cut-off events. [2022-11-16 12:03:16,704 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:03:16,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:03:16,705 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:16,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-16 12:03:16,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:16,711 INFO L85 PathProgramCache]: Analyzing trace with hash 362630567, now seen corresponding path program 1 times [2022-11-16 12:03:16,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:16,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39184850] [2022-11-16 12:03:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:16,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:17,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:17,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39184850] [2022-11-16 12:03:17,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39184850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:17,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:17,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:03:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985137685] [2022-11-16 12:03:17,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:17,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:03:17,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:03:17,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:03:17,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-11-16 12:03:17,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 282 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 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) [2022-11-16 12:03:17,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:03:17,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-11-16 12:03:17,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:03:19,305 INFO L130 PetriNetUnfolder]: 1085/5053 cut-off events. [2022-11-16 12:03:19,305 INFO L131 PetriNetUnfolder]: For 338/338 co-relation queries the response was YES. [2022-11-16 12:03:19,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6865 conditions, 5053 events. 1085/5053 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 58309 event pairs, 910 based on Foata normal form. 758/4093 useless extension candidates. Maximal degree in co-relation 2983. Up to 781 conditions per place. [2022-11-16 12:03:19,372 INFO L137 encePairwiseOnDemand]: 271/306 looper letters, 72 selfloop transitions, 9 changer transitions 5/297 dead transitions. [2022-11-16 12:03:19,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 297 transitions, 786 flow [2022-11-16 12:03:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:03:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:03:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1310 transitions. [2022-11-16 12:03:19,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8562091503267973 [2022-11-16 12:03:19,392 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1310 transitions. [2022-11-16 12:03:19,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1310 transitions. [2022-11-16 12:03:19,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:03:19,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1310 transitions. [2022-11-16 12:03:19,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 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) [2022-11-16 12:03:19,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 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) [2022-11-16 12:03:19,416 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 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) [2022-11-16 12:03:19,419 INFO L175 Difference]: Start difference. First operand has 268 places, 282 transitions, 579 flow. Second operand 5 states and 1310 transitions. [2022-11-16 12:03:19,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 297 transitions, 786 flow [2022-11-16 12:03:19,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 297 transitions, 768 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:03:19,433 INFO L231 Difference]: Finished difference. Result has 264 places, 262 transitions, 583 flow [2022-11-16 12:03:19,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=583, PETRI_PLACES=264, PETRI_TRANSITIONS=262} [2022-11-16 12:03:19,440 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, -4 predicate places. [2022-11-16 12:03:19,440 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 262 transitions, 583 flow [2022-11-16 12:03:19,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 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) [2022-11-16 12:03:19,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:03:19,442 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:19,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:03:19,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-16 12:03:19,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash -156937505, now seen corresponding path program 1 times [2022-11-16 12:03:19,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:19,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181747034] [2022-11-16 12:03:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:19,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:19,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:19,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181747034] [2022-11-16 12:03:19,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181747034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:03:19,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433601171] [2022-11-16 12:03:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:19,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:19,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:19,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:19,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:03:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:19,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:03:19,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:20,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:03:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:20,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433601171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:03:20,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:03:20,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:03:20,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583759833] [2022-11-16 12:03:20,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:03:20,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:03:20,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:20,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:03:20,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:03:20,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-11-16 12:03:20,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 262 transitions, 583 flow. Second operand has 12 states, 12 states have (on average 239.66666666666666) internal successors, (2876), 12 states have internal predecessors, (2876), 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) [2022-11-16 12:03:20,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:03:20,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-11-16 12:03:20,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:03:24,271 INFO L130 PetriNetUnfolder]: 2711/12512 cut-off events. [2022-11-16 12:03:24,272 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-11-16 12:03:24,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16836 conditions, 12512 events. 2711/12512 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 161701 event pairs, 2275 based on Foata normal form. 6/8248 useless extension candidates. Maximal degree in co-relation 13264. Up to 774 conditions per place. [2022-11-16 12:03:24,457 INFO L137 encePairwiseOnDemand]: 291/306 looper letters, 156 selfloop transitions, 40 changer transitions 0/407 dead transitions. [2022-11-16 12:03:24,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 407 transitions, 1339 flow [2022-11-16 12:03:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:03:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:03:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4468 transitions. [2022-11-16 12:03:24,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8111837327523602 [2022-11-16 12:03:24,473 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4468 transitions. [2022-11-16 12:03:24,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4468 transitions. [2022-11-16 12:03:24,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:03:24,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4468 transitions. [2022-11-16 12:03:24,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 248.22222222222223) internal successors, (4468), 18 states have internal predecessors, (4468), 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) [2022-11-16 12:03:24,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 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) [2022-11-16 12:03:24,509 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 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) [2022-11-16 12:03:24,510 INFO L175 Difference]: Start difference. First operand has 264 places, 262 transitions, 583 flow. Second operand 18 states and 4468 transitions. [2022-11-16 12:03:24,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 407 transitions, 1339 flow [2022-11-16 12:03:24,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 407 transitions, 1334 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:03:24,528 INFO L231 Difference]: Finished difference. Result has 279 places, 289 transitions, 816 flow [2022-11-16 12:03:24,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=816, PETRI_PLACES=279, PETRI_TRANSITIONS=289} [2022-11-16 12:03:24,530 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 11 predicate places. [2022-11-16 12:03:24,530 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 289 transitions, 816 flow [2022-11-16 12:03:24,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 239.66666666666666) internal successors, (2876), 12 states have internal predecessors, (2876), 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) [2022-11-16 12:03:24,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:03:24,534 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:24,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:24,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:24,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-16 12:03:24,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:24,742 INFO L85 PathProgramCache]: Analyzing trace with hash -570094258, now seen corresponding path program 1 times [2022-11-16 12:03:24,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:24,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37047703] [2022-11-16 12:03:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:24,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:24,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:24,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37047703] [2022-11-16 12:03:24,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37047703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:03:24,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582495869] [2022-11-16 12:03:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:24,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:24,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:24,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:24,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:03:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:25,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:03:25,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:25,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:03:25,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582495869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:25,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:03:25,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:03:25,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227793979] [2022-11-16 12:03:25,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:25,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:03:25,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:25,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:03:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:03:25,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-11-16 12:03:25,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 289 transitions, 816 flow. Second operand has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 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) [2022-11-16 12:03:25,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:03:25,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-11-16 12:03:25,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:03:28,320 INFO L130 PetriNetUnfolder]: 2711/12504 cut-off events. [2022-11-16 12:03:28,320 INFO L131 PetriNetUnfolder]: For 331/331 co-relation queries the response was YES. [2022-11-16 12:03:28,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16873 conditions, 12504 events. 2711/12504 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 161818 event pairs, 2275 based on Foata normal form. 8/8242 useless extension candidates. Maximal degree in co-relation 13468. Up to 3052 conditions per place. [2022-11-16 12:03:28,466 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 73 selfloop transitions, 27 changer transitions 0/311 dead transitions. [2022-11-16 12:03:28,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 311 transitions, 1032 flow [2022-11-16 12:03:28,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:03:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:03:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1740 transitions. [2022-11-16 12:03:28,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8123249299719888 [2022-11-16 12:03:28,473 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1740 transitions. [2022-11-16 12:03:28,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1740 transitions. [2022-11-16 12:03:28,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:03:28,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1740 transitions. [2022-11-16 12:03:28,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 248.57142857142858) internal successors, (1740), 7 states have internal predecessors, (1740), 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) [2022-11-16 12:03:28,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 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) [2022-11-16 12:03:28,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 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) [2022-11-16 12:03:28,490 INFO L175 Difference]: Start difference. First operand has 279 places, 289 transitions, 816 flow. Second operand 7 states and 1740 transitions. [2022-11-16 12:03:28,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 311 transitions, 1032 flow [2022-11-16 12:03:28,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 311 transitions, 958 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-16 12:03:28,504 INFO L231 Difference]: Finished difference. Result has 274 places, 281 transitions, 742 flow [2022-11-16 12:03:28,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=274, PETRI_TRANSITIONS=281} [2022-11-16 12:03:28,508 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 6 predicate places. [2022-11-16 12:03:28,508 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 281 transitions, 742 flow [2022-11-16 12:03:28,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 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) [2022-11-16 12:03:28,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:03:28,510 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:28,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:28,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:28,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-16 12:03:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash 451955623, now seen corresponding path program 2 times [2022-11-16 12:03:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:28,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765534436] [2022-11-16 12:03:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:29,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:29,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765534436] [2022-11-16 12:03:29,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765534436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:03:29,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129381664] [2022-11-16 12:03:29,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:03:29,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:29,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:29,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:29,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:03:29,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:03:29,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:03:29,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:03:29,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:03:29,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:03:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:03:29,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129381664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:03:29,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:03:29,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:03:29,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580417760] [2022-11-16 12:03:29,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:03:29,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:03:29,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:29,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:03:29,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:03:29,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 306 [2022-11-16 12:03:29,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 281 transitions, 742 flow. Second operand has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 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) [2022-11-16 12:03:29,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:03:29,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 306 [2022-11-16 12:03:29,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:03:36,677 INFO L130 PetriNetUnfolder]: 7078/25163 cut-off events. [2022-11-16 12:03:36,677 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2022-11-16 12:03:36,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35972 conditions, 25163 events. 7078/25163 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 333598 event pairs, 5509 based on Foata normal form. 4/15626 useless extension candidates. Maximal degree in co-relation 30534. Up to 1422 conditions per place. [2022-11-16 12:03:36,880 INFO L137 encePairwiseOnDemand]: 286/306 looper letters, 247 selfloop transitions, 65 changer transitions 0/503 dead transitions. [2022-11-16 12:03:36,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 503 transitions, 1905 flow [2022-11-16 12:03:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 12:03:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 12:03:36,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10949 transitions. [2022-11-16 12:03:36,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7302254235027344 [2022-11-16 12:03:36,906 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10949 transitions. [2022-11-16 12:03:36,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10949 transitions. [2022-11-16 12:03:36,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:03:36,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10949 transitions. [2022-11-16 12:03:36,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 223.44897959183675) internal successors, (10949), 49 states have internal predecessors, (10949), 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) [2022-11-16 12:03:36,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 306.0) internal successors, (15300), 50 states have internal predecessors, (15300), 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) [2022-11-16 12:03:36,989 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 306.0) internal successors, (15300), 50 states have internal predecessors, (15300), 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) [2022-11-16 12:03:36,990 INFO L175 Difference]: Start difference. First operand has 274 places, 281 transitions, 742 flow. Second operand 49 states and 10949 transitions. [2022-11-16 12:03:36,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 503 transitions, 1905 flow [2022-11-16 12:03:36,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 503 transitions, 1862 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:03:37,008 INFO L231 Difference]: Finished difference. Result has 320 places, 306 transitions, 957 flow [2022-11-16 12:03:37,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=957, PETRI_PLACES=320, PETRI_TRANSITIONS=306} [2022-11-16 12:03:37,010 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 52 predicate places. [2022-11-16 12:03:37,011 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 306 transitions, 957 flow [2022-11-16 12:03:37,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 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) [2022-11-16 12:03:37,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:03:37,013 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:37,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:37,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab8caf-31f5-45ad-8680-d1972fa7f701/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:37,218 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-16 12:03:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash -425379176, now seen corresponding path program 1 times [2022-11-16 12:03:37,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:37,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978713865] [2022-11-16 12:03:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:37,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:37,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:37,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978713865] [2022-11-16 12:03:37,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978713865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:37,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:37,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:03:37,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751177342] [2022-11-16 12:03:37,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:37,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:03:37,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:03:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:03:37,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 306 [2022-11-16 12:03:37,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 306 transitions, 957 flow. Second operand has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 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) [2022-11-16 12:03:37,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:03:37,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 306 [2022-11-16 12:03:37,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:03:47,578 INFO L130 PetriNetUnfolder]: 13609/46600 cut-off events. [2022-11-16 12:03:47,713 INFO L131 PetriNetUnfolder]: For 1217/1308 co-relation queries the response was YES. [2022-11-16 12:03:47,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67560 conditions, 46600 events. 13609/46600 cut-off events. For 1217/1308 co-relation queries the response was YES. Maximal size of possible extension queue 1960. Compared 665681 event pairs, 10633 based on Foata normal form. 0/30206 useless extension candidates. Maximal degree in co-relation 57909. Up to 14321 conditions per place. [2022-11-16 12:03:48,094 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 140 selfloop transitions, 22 changer transitions 0/371 dead transitions. [2022-11-16 12:03:48,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 371 transitions, 1516 flow [2022-11-16 12:03:48,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:03:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:03:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2358 transitions. [2022-11-16 12:03:48,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7705882352941177 [2022-11-16 12:03:48,101 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2358 transitions. [2022-11-16 12:03:48,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2358 transitions. [2022-11-16 12:03:48,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:03:48,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2358 transitions. [2022-11-16 12:03:48,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 235.8) internal successors, (2358), 10 states have internal predecessors, (2358), 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) [2022-11-16 12:03:48,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 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) [2022-11-16 12:03:48,114 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 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) [2022-11-16 12:03:48,115 INFO L175 Difference]: Start difference. First operand has 320 places, 306 transitions, 957 flow. Second operand 10 states and 2358 transitions. [2022-11-16 12:03:48,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 371 transitions, 1516 flow [2022-11-16 12:03:48,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 371 transitions, 1409 flow, removed 13 selfloop flow, removed 15 redundant places. [2022-11-16 12:03:48,124 INFO L231 Difference]: Finished difference. Result has 317 places, 308 transitions, 936 flow [2022-11-16 12:03:48,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=936, PETRI_PLACES=317, PETRI_TRANSITIONS=308} [2022-11-16 12:03:48,128 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 49 predicate places. [2022-11-16 12:03:48,128 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 308 transitions, 936 flow [2022-11-16 12:03:48,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 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) [2022-11-16 12:03:48,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:03:48,129 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:48,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:03:48,130 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-16 12:03:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:48,131 INFO L85 PathProgramCache]: Analyzing trace with hash 32746338, now seen corresponding path program 1 times [2022-11-16 12:03:48,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:48,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661852717] [2022-11-16 12:03:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:48,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:48,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:48,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661852717] [2022-11-16 12:03:48,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661852717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:48,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:48,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:03:48,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907048694] [2022-11-16 12:03:48,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:48,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:03:48,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:48,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:03:48,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:03:48,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 306 [2022-11-16 12:03:48,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 308 transitions, 936 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 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) [2022-11-16 12:03:48,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:03:48,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 306 [2022-11-16 12:03:48,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:00,314 INFO L130 PetriNetUnfolder]: 18656/58101 cut-off events. [2022-11-16 12:04:00,315 INFO L131 PetriNetUnfolder]: For 3284/3494 co-relation queries the response was YES. [2022-11-16 12:04:00,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87530 conditions, 58101 events. 18656/58101 cut-off events. For 3284/3494 co-relation queries the response was YES. Maximal size of possible extension queue 1727. Compared 799132 event pairs, 14441 based on Foata normal form. 210/38914 useless extension candidates. Maximal degree in co-relation 81305. Up to 24080 conditions per place. [2022-11-16 12:04:00,814 INFO L137 encePairwiseOnDemand]: 292/306 looper letters, 160 selfloop transitions, 23 changer transitions 2/375 dead transitions. [2022-11-16 12:04:00,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 375 transitions, 1521 flow [2022-11-16 12:04:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:04:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:04:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2276 transitions. [2022-11-16 12:04:00,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6761734997029115 [2022-11-16 12:04:00,825 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2276 transitions. [2022-11-16 12:04:00,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2276 transitions. [2022-11-16 12:04:00,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:00,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2276 transitions. [2022-11-16 12:04:00,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 206.9090909090909) internal successors, (2276), 11 states have internal predecessors, (2276), 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) [2022-11-16 12:04:00,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:00,839 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:00,839 INFO L175 Difference]: Start difference. First operand has 317 places, 308 transitions, 936 flow. Second operand 11 states and 2276 transitions. [2022-11-16 12:04:00,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 375 transitions, 1521 flow [2022-11-16 12:04:00,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 375 transitions, 1497 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:04:00,857 INFO L231 Difference]: Finished difference. Result has 328 places, 312 transitions, 988 flow [2022-11-16 12:04:00,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=988, PETRI_PLACES=328, PETRI_TRANSITIONS=312} [2022-11-16 12:04:00,858 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 60 predicate places. [2022-11-16 12:04:00,858 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 312 transitions, 988 flow [2022-11-16 12:04:00,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 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) [2022-11-16 12:04:00,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:00,860 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:00,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:04:00,860 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-16 12:04:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash -570715185, now seen corresponding path program 1 times [2022-11-16 12:04:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:00,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304402406] [2022-11-16 12:04:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:00,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:04:01,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:01,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304402406] [2022-11-16 12:04:01,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304402406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:01,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:01,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:04:01,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120709455] [2022-11-16 12:04:01,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:01,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:04:01,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:01,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:04:01,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:04:01,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 306 [2022-11-16 12:04:01,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 312 transitions, 988 flow. Second operand has 12 states, 12 states have (on average 202.41666666666666) internal successors, (2429), 12 states have internal predecessors, (2429), 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) [2022-11-16 12:04:01,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:01,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 306 [2022-11-16 12:04:01,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand