./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i --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_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/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_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/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_112a93e3-2b2e-4896-81ad-7ec597bebb6a/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 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd --- 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 11:39:46,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:39:46,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:39:46,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:39:46,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:39:46,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:39:46,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:39:46,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:39:46,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:39:46,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:39:46,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:39:46,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:39:46,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:39:46,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:39:46,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:39:46,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:39:46,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:39:46,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:39:46,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:39:46,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:39:46,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:39:46,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:39:46,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:39:46,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:39:46,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:39:46,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:39:46,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:39:46,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:39:46,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:39:46,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:39:46,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:39:46,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:39:46,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:39:46,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:39:46,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:39:46,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:39:46,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:39:46,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:39:46,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:39:46,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:39:46,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:39:46,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:39:46,697 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:39:46,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:39:46,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:39:46,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:39:46,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:39:46,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:39:46,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:39:46,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:39:46,701 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:39:46,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:39:46,703 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:39:46,704 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:39:46,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:39:46,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:39:46,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:39:46,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:39:46,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:39:46,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:39:46,706 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:39:46,706 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:39:46,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:39:46,707 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:39:46,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:39:46,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:39:46,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:39:46,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:39:46,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:39:46,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:39:46,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:39:46,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:39:46,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:39:46,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:39:46,712 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:39:46,712 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:39:46,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:39:46,713 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_112a93e3-2b2e-4896-81ad-7ec597bebb6a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd [2022-11-16 11:39:47,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:39:47,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:39:47,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:39:47,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:39:47,077 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:39:47,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2022-11-16 11:39:47,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/data/30d47ab8a/ae442a59867848c4ad4e317b5df7af93/FLAG15472974c [2022-11-16 11:39:47,777 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:39:47,778 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2022-11-16 11:39:47,795 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/data/30d47ab8a/ae442a59867848c4ad4e317b5df7af93/FLAG15472974c [2022-11-16 11:39:48,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/data/30d47ab8a/ae442a59867848c4ad4e317b5df7af93 [2022-11-16 11:39:48,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:39:48,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:39:48,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:39:48,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:39:48,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:39:48,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531850d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48, skipping insertion in model container [2022-11-16 11:39:48,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:39:48,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:39:48,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:39:48,631 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:39:48,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:39:48,775 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:39:48,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48 WrapperNode [2022-11-16 11:39:48,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:39:48,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:39:48,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:39:48,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:39:48,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,829 INFO L138 Inliner]: procedures = 161, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-11-16 11:39:48,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:39:48,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:39:48,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:39:48,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:39:48,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,872 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:39:48,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:39:48,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:39:48,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:39:48,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (1/1) ... [2022-11-16 11:39:48,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:39:48,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:48,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:39:48,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:39:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:39:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:39:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:39:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:39:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:39:49,002 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:39:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:39:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:39:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:39:49,005 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 11:39:49,200 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:39:49,202 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:39:49,371 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:39:49,380 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:39:49,381 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:39:49,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:39:49 BoogieIcfgContainer [2022-11-16 11:39:49,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:39:49,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:39:49,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:39:49,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:39:49,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:39:48" (1/3) ... [2022-11-16 11:39:49,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39642b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:39:49, skipping insertion in model container [2022-11-16 11:39:49,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:48" (2/3) ... [2022-11-16 11:39:49,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39642b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:39:49, skipping insertion in model container [2022-11-16 11:39:49,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:39:49" (3/3) ... [2022-11-16 11:39:49,395 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_02-idx_nr.i [2022-11-16 11:39:49,407 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:39:49,420 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:39:49,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 11:39:49,421 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:39:49,484 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:39:49,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 61 transitions, 127 flow [2022-11-16 11:39:49,576 INFO L130 PetriNetUnfolder]: 2/60 cut-off events. [2022-11-16 11:39:49,576 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:39:49,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 60 events. 2/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2022-11-16 11:39:49,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 61 transitions, 127 flow [2022-11-16 11:39:49,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 60 transitions, 123 flow [2022-11-16 11:39:49,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:39:49,609 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;@43be846b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:39:49,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 11:39:49,618 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2022-11-16 11:39:49,619 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:39:49,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:49,620 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:49,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:49,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:49,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2111633340, now seen corresponding path program 1 times [2022-11-16 11:39:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:49,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165364217] [2022-11-16 11:39:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:49,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:49,989 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 11:39:49,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165364217] [2022-11-16 11:39:49,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165364217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:49,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:49,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:39:49,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742833782] [2022-11-16 11:39:49,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:50,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:39:50,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:50,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:39:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:39:50,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2022-11-16 11:39:50,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 11:39:50,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:50,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2022-11-16 11:39:50,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:50,284 INFO L130 PetriNetUnfolder]: 1/66 cut-off events. [2022-11-16 11:39:50,285 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:39:50,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 66 events. 1/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 53. Up to 14 conditions per place. [2022-11-16 11:39:50,295 INFO L137 encePairwiseOnDemand]: 53/61 looper letters, 16 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2022-11-16 11:39:50,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 175 flow [2022-11-16 11:39:50,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:39:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:39:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 260 transitions. [2022-11-16 11:39:50,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8524590163934426 [2022-11-16 11:39:50,324 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 260 transitions. [2022-11-16 11:39:50,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 260 transitions. [2022-11-16 11:39:50,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:50,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 260 transitions. [2022-11-16 11:39:50,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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 11:39:50,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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 11:39:50,348 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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 11:39:50,351 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 123 flow. Second operand 5 states and 260 transitions. [2022-11-16 11:39:50,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 175 flow [2022-11-16 11:39:50,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:39:50,360 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 152 flow [2022-11-16 11:39:50,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2022-11-16 11:39:50,368 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 6 predicate places. [2022-11-16 11:39:50,368 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 152 flow [2022-11-16 11:39:50,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 11:39:50,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:50,369 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:50,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:39:50,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:50,372 INFO L85 PathProgramCache]: Analyzing trace with hash -885101217, now seen corresponding path program 1 times [2022-11-16 11:39:50,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:50,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695562477] [2022-11-16 11:39:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:50,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:39:50,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:50,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695562477] [2022-11-16 11:39:50,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695562477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:50,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:50,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:39:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935324104] [2022-11-16 11:39:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:50,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:39:50,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:50,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:39:50,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:39:50,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2022-11-16 11:39:50,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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 11:39:50,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:50,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2022-11-16 11:39:50,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:50,564 INFO L130 PetriNetUnfolder]: 1/65 cut-off events. [2022-11-16 11:39:50,564 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:39:50,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 65 events. 1/65 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 62. Up to 7 conditions per place. [2022-11-16 11:39:50,565 INFO L137 encePairwiseOnDemand]: 55/61 looper letters, 8 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2022-11-16 11:39:50,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 62 transitions, 182 flow [2022-11-16 11:39:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:39:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:39:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 249 transitions. [2022-11-16 11:39:50,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8163934426229508 [2022-11-16 11:39:50,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 249 transitions. [2022-11-16 11:39:50,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 249 transitions. [2022-11-16 11:39:50,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:50,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 249 transitions. [2022-11-16 11:39:50,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 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 11:39:50,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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 11:39:50,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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 11:39:50,574 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 152 flow. Second operand 5 states and 249 transitions. [2022-11-16 11:39:50,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 62 transitions, 182 flow [2022-11-16 11:39:50,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:39:50,578 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 170 flow [2022-11-16 11:39:50,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2022-11-16 11:39:50,580 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2022-11-16 11:39:50,580 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 170 flow [2022-11-16 11:39:50,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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 11:39:50,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:50,581 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:50,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:39:50,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:50,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1668333812, now seen corresponding path program 1 times [2022-11-16 11:39:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:50,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786523148] [2022-11-16 11:39:50,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:50,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:50,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:50,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786523148] [2022-11-16 11:39:50,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786523148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:50,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525660063] [2022-11-16 11:39:50,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:50,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:50,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:50,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:50,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:39:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:50,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:39:50,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:51,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:39:51,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525660063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:51,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:39:51,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:39:51,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85638203] [2022-11-16 11:39:51,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:51,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:39:51,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:51,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:39:51,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:39:51,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2022-11-16 11:39:51,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 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 11:39:51,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:51,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2022-11-16 11:39:51,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:51,140 INFO L130 PetriNetUnfolder]: 1/64 cut-off events. [2022-11-16 11:39:51,140 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-16 11:39:51,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 64 events. 1/64 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 12. Up to 6 conditions per place. [2022-11-16 11:39:51,141 INFO L137 encePairwiseOnDemand]: 56/61 looper letters, 12 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2022-11-16 11:39:51,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 64 transitions, 208 flow [2022-11-16 11:39:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:39:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:39:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 348 transitions. [2022-11-16 11:39:51,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149882903981265 [2022-11-16 11:39:51,145 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 348 transitions. [2022-11-16 11:39:51,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 348 transitions. [2022-11-16 11:39:51,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:51,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 348 transitions. [2022-11-16 11:39:51,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 49.714285714285715) internal successors, (348), 7 states have internal predecessors, (348), 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 11:39:51,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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 11:39:51,163 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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 11:39:51,163 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 170 flow. Second operand 7 states and 348 transitions. [2022-11-16 11:39:51,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 64 transitions, 208 flow [2022-11-16 11:39:51,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:39:51,167 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 166 flow [2022-11-16 11:39:51,168 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=166, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2022-11-16 11:39:51,169 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 11 predicate places. [2022-11-16 11:39:51,169 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 166 flow [2022-11-16 11:39:51,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 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 11:39:51,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:51,171 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] [2022-11-16 11:39:51,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:51,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:51,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:51,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash 217078494, now seen corresponding path program 1 times [2022-11-16 11:39:51,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:51,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183707877] [2022-11-16 11:39:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:51,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:51,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183707877] [2022-11-16 11:39:51,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183707877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:51,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078892013] [2022-11-16 11:39:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:51,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:51,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:51,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:51,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:39:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:51,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:39:51,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:51,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:51,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078892013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:39:51,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:39:51,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:39:51,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193905496] [2022-11-16 11:39:51,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:51,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:39:51,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:51,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:39:51,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:39:51,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2022-11-16 11:39:51,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 166 flow. Second operand has 10 states, 10 states have (on average 49.7) internal successors, (497), 10 states have internal predecessors, (497), 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 11:39:51,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:51,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2022-11-16 11:39:51,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:52,194 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-11-16 11:39:52,195 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-16 11:39:52,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 72 events. 1/72 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 2/70 useless extension candidates. Maximal degree in co-relation 50. Up to 7 conditions per place. [2022-11-16 11:39:52,204 INFO L137 encePairwiseOnDemand]: 55/61 looper letters, 17 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2022-11-16 11:39:52,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 256 flow [2022-11-16 11:39:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:39:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:39:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 451 transitions. [2022-11-16 11:39:52,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8214936247723132 [2022-11-16 11:39:52,208 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 451 transitions. [2022-11-16 11:39:52,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 451 transitions. [2022-11-16 11:39:52,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:52,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 451 transitions. [2022-11-16 11:39:52,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 50.111111111111114) internal successors, (451), 9 states have internal predecessors, (451), 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 11:39:52,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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 11:39:52,216 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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 11:39:52,216 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 166 flow. Second operand 9 states and 451 transitions. [2022-11-16 11:39:52,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 256 flow [2022-11-16 11:39:52,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 243 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-16 11:39:52,221 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 213 flow [2022-11-16 11:39:52,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2022-11-16 11:39:52,223 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 18 predicate places. [2022-11-16 11:39:52,223 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 213 flow [2022-11-16 11:39:52,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.7) internal successors, (497), 10 states have internal predecessors, (497), 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 11:39:52,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:52,225 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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 11:39:52,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:39:52,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:52,431 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:52,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:52,432 INFO L85 PathProgramCache]: Analyzing trace with hash -832856450, now seen corresponding path program 2 times [2022-11-16 11:39:52,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:52,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666006645] [2022-11-16 11:39:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:52,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:39:52,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:52,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666006645] [2022-11-16 11:39:52,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666006645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:52,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:52,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:39:52,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661809312] [2022-11-16 11:39:52,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:52,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:39:52,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:52,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:39:52,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:39:52,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 61 [2022-11-16 11:39:52,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 11:39:52,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:52,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 61 [2022-11-16 11:39:52,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:52,703 INFO L130 PetriNetUnfolder]: 11/142 cut-off events. [2022-11-16 11:39:52,703 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 11:39:52,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 142 events. 11/142 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 396 event pairs, 2 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 154. Up to 14 conditions per place. [2022-11-16 11:39:52,708 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 11 selfloop transitions, 5 changer transitions 9/79 dead transitions. [2022-11-16 11:39:52,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 291 flow [2022-11-16 11:39:52,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:39:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:39:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 274 transitions. [2022-11-16 11:39:52,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.898360655737705 [2022-11-16 11:39:52,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 274 transitions. [2022-11-16 11:39:52,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 274 transitions. [2022-11-16 11:39:52,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:52,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 274 transitions. [2022-11-16 11:39:52,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 54.8) internal successors, (274), 5 states have internal predecessors, (274), 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 11:39:52,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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 11:39:52,717 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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 11:39:52,717 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 213 flow. Second operand 5 states and 274 transitions. [2022-11-16 11:39:52,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 291 flow [2022-11-16 11:39:52,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 277 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-16 11:39:52,730 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 228 flow [2022-11-16 11:39:52,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2022-11-16 11:39:52,735 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 21 predicate places. [2022-11-16 11:39:52,736 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 228 flow [2022-11-16 11:39:52,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 11:39:52,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:52,737 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 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 11:39:52,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:39:52,738 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:52,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:52,739 INFO L85 PathProgramCache]: Analyzing trace with hash -573572940, now seen corresponding path program 1 times [2022-11-16 11:39:52,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:52,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275676535] [2022-11-16 11:39:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:52,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:39:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:52,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275676535] [2022-11-16 11:39:52,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275676535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:52,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:52,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:39:52,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128836015] [2022-11-16 11:39:52,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:52,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:39:52,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:52,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:39:52,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:39:52,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 61 [2022-11-16 11:39:52,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 11:39:52,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:52,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 61 [2022-11-16 11:39:52,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:53,047 INFO L130 PetriNetUnfolder]: 7/110 cut-off events. [2022-11-16 11:39:53,048 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-16 11:39:53,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 110 events. 7/110 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 243 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 150. Up to 10 conditions per place. [2022-11-16 11:39:53,049 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 11 selfloop transitions, 5 changer transitions 5/74 dead transitions. [2022-11-16 11:39:53,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 74 transitions, 296 flow [2022-11-16 11:39:53,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:39:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:39:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 265 transitions. [2022-11-16 11:39:53,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8688524590163934 [2022-11-16 11:39:53,052 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 265 transitions. [2022-11-16 11:39:53,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 265 transitions. [2022-11-16 11:39:53,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:53,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 265 transitions. [2022-11-16 11:39:53,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 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 11:39:53,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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 11:39:53,056 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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 11:39:53,056 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 228 flow. Second operand 5 states and 265 transitions. [2022-11-16 11:39:53,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 74 transitions, 296 flow [2022-11-16 11:39:53,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 74 transitions, 283 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-16 11:39:53,061 INFO L231 Difference]: Finished difference. Result has 87 places, 67 transitions, 246 flow [2022-11-16 11:39:53,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=87, PETRI_TRANSITIONS=67} [2022-11-16 11:39:53,063 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 25 predicate places. [2022-11-16 11:39:53,063 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 67 transitions, 246 flow [2022-11-16 11:39:53,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 11:39:53,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:53,064 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:53,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:39:53,065 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:53,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:53,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1912977395, now seen corresponding path program 1 times [2022-11-16 11:39:53,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:53,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177661037] [2022-11-16 11:39:53,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:53,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:39:53,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:53,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177661037] [2022-11-16 11:39:53,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177661037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:53,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:53,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:39:53,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612636067] [2022-11-16 11:39:53,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:53,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:39:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:39:53,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:39:53,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 61 [2022-11-16 11:39:53,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 67 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 11:39:53,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:53,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 61 [2022-11-16 11:39:53,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:53,237 INFO L130 PetriNetUnfolder]: 1/82 cut-off events. [2022-11-16 11:39:53,237 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-16 11:39:53,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 82 events. 1/82 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 123. Up to 9 conditions per place. [2022-11-16 11:39:53,238 INFO L137 encePairwiseOnDemand]: 57/61 looper letters, 4 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2022-11-16 11:39:53,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 67 transitions, 262 flow [2022-11-16 11:39:53,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:39:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:39:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2022-11-16 11:39:53,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.907103825136612 [2022-11-16 11:39:53,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 166 transitions. [2022-11-16 11:39:53,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 166 transitions. [2022-11-16 11:39:53,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:53,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 166 transitions. [2022-11-16 11:39:53,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 11:39:53,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 11:39:53,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 11:39:53,244 INFO L175 Difference]: Start difference. First operand has 87 places, 67 transitions, 246 flow. Second operand 3 states and 166 transitions. [2022-11-16 11:39:53,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 67 transitions, 262 flow [2022-11-16 11:39:53,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 67 transitions, 251 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-16 11:39:53,248 INFO L231 Difference]: Finished difference. Result has 86 places, 67 transitions, 243 flow [2022-11-16 11:39:53,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=86, PETRI_TRANSITIONS=67} [2022-11-16 11:39:53,250 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 24 predicate places. [2022-11-16 11:39:53,250 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 67 transitions, 243 flow [2022-11-16 11:39:53,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 11:39:53,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:53,251 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:53,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:39:53,252 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:53,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:53,252 INFO L85 PathProgramCache]: Analyzing trace with hash -958761778, now seen corresponding path program 1 times [2022-11-16 11:39:53,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:53,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580345548] [2022-11-16 11:39:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:53,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:39:53,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:53,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580345548] [2022-11-16 11:39:53,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580345548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:53,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:53,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:39:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524103223] [2022-11-16 11:39:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:53,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:39:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:53,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:39:53,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:39:53,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 61 [2022-11-16 11:39:53,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 67 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 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 11:39:53,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:53,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 61 [2022-11-16 11:39:53,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:53,538 INFO L130 PetriNetUnfolder]: 1/81 cut-off events. [2022-11-16 11:39:53,538 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-11-16 11:39:53,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 81 events. 1/81 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 72 event pairs, 0 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 125. Up to 7 conditions per place. [2022-11-16 11:39:53,540 INFO L137 encePairwiseOnDemand]: 53/61 looper letters, 12 selfloop transitions, 8 changer transitions 2/70 dead transitions. [2022-11-16 11:39:53,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 70 transitions, 291 flow [2022-11-16 11:39:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:39:53,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:39:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 410 transitions. [2022-11-16 11:39:53,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7468123861566485 [2022-11-16 11:39:53,543 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 410 transitions. [2022-11-16 11:39:53,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 410 transitions. [2022-11-16 11:39:53,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:53,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 410 transitions. [2022-11-16 11:39:53,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 45.55555555555556) internal successors, (410), 9 states have internal predecessors, (410), 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 11:39:53,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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 11:39:53,548 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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 11:39:53,549 INFO L175 Difference]: Start difference. First operand has 86 places, 67 transitions, 243 flow. Second operand 9 states and 410 transitions. [2022-11-16 11:39:53,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 70 transitions, 291 flow [2022-11-16 11:39:53,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 70 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:39:53,557 INFO L231 Difference]: Finished difference. Result has 92 places, 66 transitions, 251 flow [2022-11-16 11:39:53,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=92, PETRI_TRANSITIONS=66} [2022-11-16 11:39:53,563 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 30 predicate places. [2022-11-16 11:39:53,564 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 66 transitions, 251 flow [2022-11-16 11:39:53,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 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 11:39:53,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:53,565 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:53,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:39:53,567 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:53,568 INFO L85 PathProgramCache]: Analyzing trace with hash 386626941, now seen corresponding path program 1 times [2022-11-16 11:39:53,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:53,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307980759] [2022-11-16 11:39:53,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:53,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:53,755 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:39:53,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:53,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307980759] [2022-11-16 11:39:53,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307980759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:53,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:53,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:39:53,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476709390] [2022-11-16 11:39:53,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:53,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:39:53,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:39:53,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:39:53,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 61 [2022-11-16 11:39:53,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 66 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 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 11:39:53,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:53,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 61 [2022-11-16 11:39:53,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:53,871 INFO L130 PetriNetUnfolder]: 1/80 cut-off events. [2022-11-16 11:39:53,871 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-16 11:39:53,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 80 events. 1/80 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2022-11-16 11:39:53,874 INFO L137 encePairwiseOnDemand]: 53/61 looper letters, 11 selfloop transitions, 8 changer transitions 2/69 dead transitions. [2022-11-16 11:39:53,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 69 transitions, 297 flow [2022-11-16 11:39:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:39:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:39:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 409 transitions. [2022-11-16 11:39:53,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7449908925318761 [2022-11-16 11:39:53,877 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 409 transitions. [2022-11-16 11:39:53,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 409 transitions. [2022-11-16 11:39:53,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:53,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 409 transitions. [2022-11-16 11:39:53,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 45.44444444444444) internal successors, (409), 9 states have internal predecessors, (409), 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 11:39:53,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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 11:39:53,883 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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 11:39:53,883 INFO L175 Difference]: Start difference. First operand has 92 places, 66 transitions, 251 flow. Second operand 9 states and 409 transitions. [2022-11-16 11:39:53,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 69 transitions, 297 flow [2022-11-16 11:39:53,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 69 transitions, 276 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-16 11:39:53,892 INFO L231 Difference]: Finished difference. Result has 91 places, 65 transitions, 242 flow [2022-11-16 11:39:53,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=242, PETRI_PLACES=91, PETRI_TRANSITIONS=65} [2022-11-16 11:39:53,893 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 29 predicate places. [2022-11-16 11:39:53,893 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 65 transitions, 242 flow [2022-11-16 11:39:53,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 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 11:39:53,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:53,897 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:53,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:39:53,898 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:53,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:53,899 INFO L85 PathProgramCache]: Analyzing trace with hash -410466086, now seen corresponding path program 1 times [2022-11-16 11:39:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:53,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868508472] [2022-11-16 11:39:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:54,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:54,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868508472] [2022-11-16 11:39:54,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868508472] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:54,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780958452] [2022-11-16 11:39:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:54,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:54,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:54,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:54,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:39:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:54,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:39:54,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:54,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:54,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780958452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:39:54,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:39:54,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:39:54,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458211409] [2022-11-16 11:39:54,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:54,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:39:54,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:54,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:39:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:39:54,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2022-11-16 11:39:54,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 65 transitions, 242 flow. Second operand has 18 states, 18 states have (on average 50.05555555555556) internal successors, (901), 18 states have internal predecessors, (901), 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 11:39:54,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:54,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2022-11-16 11:39:54,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:54,879 INFO L130 PetriNetUnfolder]: 1/108 cut-off events. [2022-11-16 11:39:54,879 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2022-11-16 11:39:54,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 108 events. 1/108 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 4/112 useless extension candidates. Maximal degree in co-relation 240. Up to 9 conditions per place. [2022-11-16 11:39:54,881 INFO L137 encePairwiseOnDemand]: 55/61 looper letters, 33 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2022-11-16 11:39:54,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 100 transitions, 512 flow [2022-11-16 11:39:54,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:39:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:39:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1045 transitions. [2022-11-16 11:39:54,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8157689305230289 [2022-11-16 11:39:54,886 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1045 transitions. [2022-11-16 11:39:54,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1045 transitions. [2022-11-16 11:39:54,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:54,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1045 transitions. [2022-11-16 11:39:54,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 49.76190476190476) internal successors, (1045), 21 states have internal predecessors, (1045), 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 11:39:54,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 61.0) internal successors, (1342), 22 states have internal predecessors, (1342), 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 11:39:54,898 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 61.0) internal successors, (1342), 22 states have internal predecessors, (1342), 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 11:39:54,899 INFO L175 Difference]: Start difference. First operand has 91 places, 65 transitions, 242 flow. Second operand 21 states and 1045 transitions. [2022-11-16 11:39:54,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 100 transitions, 512 flow [2022-11-16 11:39:54,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 100 transitions, 494 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-16 11:39:54,903 INFO L231 Difference]: Finished difference. Result has 109 places, 78 transitions, 388 flow [2022-11-16 11:39:54,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=388, PETRI_PLACES=109, PETRI_TRANSITIONS=78} [2022-11-16 11:39:54,906 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 47 predicate places. [2022-11-16 11:39:54,906 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 78 transitions, 388 flow [2022-11-16 11:39:54,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 50.05555555555556) internal successors, (901), 18 states have internal predecessors, (901), 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 11:39:54,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:54,907 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:54,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:39:55,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:39:55,113 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:55,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:55,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1324621382, now seen corresponding path program 2 times [2022-11-16 11:39:55,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:55,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41207327] [2022-11-16 11:39:55,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:55,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:55,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:55,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41207327] [2022-11-16 11:39:55,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41207327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:55,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389845810] [2022-11-16 11:39:55,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:39:55,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:55,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:55,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:55,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:39:55,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:39:55,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:39:55,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:39:55,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-16 11:39:55,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:39:55,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389845810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:55,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:39:55,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-16 11:39:55,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985307113] [2022-11-16 11:39:55,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:55,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:39:55,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:55,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:39:55,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:39:55,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 61 [2022-11-16 11:39:55,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 78 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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 11:39:55,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:55,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 61 [2022-11-16 11:39:55,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:56,073 INFO L130 PetriNetUnfolder]: 1/107 cut-off events. [2022-11-16 11:39:56,073 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-11-16 11:39:56,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 107 events. 1/107 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 229. Up to 9 conditions per place. [2022-11-16 11:39:56,074 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 9 selfloop transitions, 2 changer transitions 12/81 dead transitions. [2022-11-16 11:39:56,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 81 transitions, 432 flow [2022-11-16 11:39:56,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:39:56,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:39:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 322 transitions. [2022-11-16 11:39:56,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7540983606557377 [2022-11-16 11:39:56,078 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 322 transitions. [2022-11-16 11:39:56,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 322 transitions. [2022-11-16 11:39:56,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:56,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 322 transitions. [2022-11-16 11:39:56,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 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 11:39:56,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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 11:39:56,082 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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 11:39:56,082 INFO L175 Difference]: Start difference. First operand has 109 places, 78 transitions, 388 flow. Second operand 7 states and 322 transitions. [2022-11-16 11:39:56,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 81 transitions, 432 flow [2022-11-16 11:39:56,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 81 transitions, 386 flow, removed 15 selfloop flow, removed 8 redundant places. [2022-11-16 11:39:56,088 INFO L231 Difference]: Finished difference. Result has 106 places, 69 transitions, 317 flow [2022-11-16 11:39:56,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=106, PETRI_TRANSITIONS=69} [2022-11-16 11:39:56,089 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 44 predicate places. [2022-11-16 11:39:56,090 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 69 transitions, 317 flow [2022-11-16 11:39:56,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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 11:39:56,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:56,091 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:56,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 11:39:56,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:56,297 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:56,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:56,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1103211619, now seen corresponding path program 1 times [2022-11-16 11:39:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:56,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551643417] [2022-11-16 11:39:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:56,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:56,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:56,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551643417] [2022-11-16 11:39:56,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551643417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:56,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661276355] [2022-11-16 11:39:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:56,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:56,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:56,735 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:56,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:39:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:56,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:39:56,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:57,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:57,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661276355] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:39:57,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:39:57,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 11:39:57,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136759273] [2022-11-16 11:39:57,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:57,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:39:57,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:39:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:39:57,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2022-11-16 11:39:57,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 69 transitions, 317 flow. Second operand has 23 states, 23 states have (on average 50.30434782608695) internal successors, (1157), 23 states have internal predecessors, (1157), 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 11:39:57,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:57,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2022-11-16 11:39:57,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:57,926 INFO L130 PetriNetUnfolder]: 1/114 cut-off events. [2022-11-16 11:39:57,926 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-16 11:39:57,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 114 events. 1/114 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs, 0 based on Foata normal form. 3/117 useless extension candidates. Maximal degree in co-relation 334. Up to 12 conditions per place. [2022-11-16 11:39:57,927 INFO L137 encePairwiseOnDemand]: 55/61 looper letters, 45 selfloop transitions, 30 changer transitions 0/112 dead transitions. [2022-11-16 11:39:57,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 665 flow [2022-11-16 11:39:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:39:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:39:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1488 transitions. [2022-11-16 11:39:57,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8131147540983606 [2022-11-16 11:39:57,934 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1488 transitions. [2022-11-16 11:39:57,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1488 transitions. [2022-11-16 11:39:57,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:57,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1488 transitions. [2022-11-16 11:39:57,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 49.6) internal successors, (1488), 30 states have internal predecessors, (1488), 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 11:39:57,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 61.0) internal successors, (1891), 31 states have internal predecessors, (1891), 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 11:39:57,946 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 61.0) internal successors, (1891), 31 states have internal predecessors, (1891), 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 11:39:57,946 INFO L175 Difference]: Start difference. First operand has 106 places, 69 transitions, 317 flow. Second operand 30 states and 1488 transitions. [2022-11-16 11:39:57,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 665 flow [2022-11-16 11:39:57,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 655 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:39:57,952 INFO L231 Difference]: Finished difference. Result has 121 places, 79 transitions, 473 flow [2022-11-16 11:39:57,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=473, PETRI_PLACES=121, PETRI_TRANSITIONS=79} [2022-11-16 11:39:57,953 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 59 predicate places. [2022-11-16 11:39:57,954 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 79 transitions, 473 flow [2022-11-16 11:39:57,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 50.30434782608695) internal successors, (1157), 23 states have internal predecessors, (1157), 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 11:39:57,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:57,955 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:57,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:58,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:39:58,161 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:39:58,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:58,162 INFO L85 PathProgramCache]: Analyzing trace with hash -350201176, now seen corresponding path program 2 times [2022-11-16 11:39:58,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:58,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576647909] [2022-11-16 11:39:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:58,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:39:58,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:58,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576647909] [2022-11-16 11:39:58,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576647909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:58,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:58,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:39:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660966109] [2022-11-16 11:39:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:58,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:39:58,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:58,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:39:58,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:39:58,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 61 [2022-11-16 11:39:58,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 79 transitions, 473 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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 11:39:58,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:58,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 61 [2022-11-16 11:39:58,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:58,454 INFO L130 PetriNetUnfolder]: 1/113 cut-off events. [2022-11-16 11:39:58,454 INFO L131 PetriNetUnfolder]: For 217/217 co-relation queries the response was YES. [2022-11-16 11:39:58,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 113 events. 1/113 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 278. Up to 12 conditions per place. [2022-11-16 11:39:58,455 INFO L137 encePairwiseOnDemand]: 55/61 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2022-11-16 11:39:58,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 78 transitions, 491 flow [2022-11-16 11:39:58,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:39:58,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:39:58,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2022-11-16 11:39:58,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7306791569086651 [2022-11-16 11:39:58,458 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2022-11-16 11:39:58,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2022-11-16 11:39:58,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:58,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2022-11-16 11:39:58,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 44.57142857142857) internal successors, (312), 7 states have internal predecessors, (312), 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 11:39:58,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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 11:39:58,462 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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 11:39:58,462 INFO L175 Difference]: Start difference. First operand has 121 places, 79 transitions, 473 flow. Second operand 7 states and 312 transitions. [2022-11-16 11:39:58,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 78 transitions, 491 flow [2022-11-16 11:39:58,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 78 transitions, 445 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 11:39:58,467 INFO L231 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2022-11-16 11:39:58,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2022-11-16 11:39:58,468 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 46 predicate places. [2022-11-16 11:39:58,468 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2022-11-16 11:39:58,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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 11:39:58,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2022-11-16 11:39:58,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-11-16 11:39:58,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-11-16 11:39:58,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-11-16 11:39:58,474 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2022-11-16 11:39:58,474 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-11-16 11:39:58,474 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-11-16 11:39:58,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-11-16 11:39:58,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-11-16 11:39:58,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:39:58,476 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:58,482 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:39:58,483 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:39:58,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:39:58 BasicIcfg [2022-11-16 11:39:58,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:39:58,490 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:39:58,490 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:39:58,490 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:39:58,491 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:39:49" (3/4) ... [2022-11-16 11:39:58,494 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:39:58,502 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-16 11:39:58,507 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-16 11:39:58,507 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 11:39:58,508 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:39:58,544 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:39:58,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:39:58,545 INFO L158 Benchmark]: Toolchain (without parser) took 10503.32ms. Allocated memory was 121.6MB in the beginning and 192.9MB in the end (delta: 71.3MB). Free memory was 78.4MB in the beginning and 72.6MB in the end (delta: 5.8MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. [2022-11-16 11:39:58,545 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:39:58,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 727.91ms. Allocated memory is still 121.6MB. Free memory was 78.2MB in the beginning and 87.5MB in the end (delta: -9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:39:58,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.33ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 85.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:39:58,546 INFO L158 Benchmark]: Boogie Preprocessor took 45.66ms. Allocated memory is still 121.6MB. Free memory was 85.8MB in the beginning and 84.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:39:58,547 INFO L158 Benchmark]: RCFGBuilder took 507.18ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 72.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:39:58,547 INFO L158 Benchmark]: TraceAbstraction took 9103.28ms. Allocated memory was 121.6MB in the beginning and 192.9MB in the end (delta: 71.3MB). Free memory was 71.2MB in the beginning and 74.7MB in the end (delta: -3.5MB). Peak memory consumption was 70.3MB. Max. memory is 16.1GB. [2022-11-16 11:39:58,548 INFO L158 Benchmark]: Witness Printer took 54.35ms. Allocated memory is still 192.9MB. Free memory was 74.7MB in the beginning and 72.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:39:58,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 727.91ms. Allocated memory is still 121.6MB. Free memory was 78.2MB in the beginning and 87.5MB in the end (delta: -9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.33ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 85.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.66ms. Allocated memory is still 121.6MB. Free memory was 85.8MB in the beginning and 84.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 507.18ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 72.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9103.28ms. Allocated memory was 121.6MB in the beginning and 192.9MB in the end (delta: 71.3MB). Free memory was 71.2MB in the beginning and 74.7MB in the end (delta: -3.5MB). Peak memory consumption was 70.3MB. Max. memory is 16.1GB. * Witness Printer took 54.35ms. Allocated memory is still 192.9MB. Free memory was 74.7MB in the beginning and 72.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 75 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.0s, OverallIterations: 13, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 317 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 317 mSDsluCounter, 177 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 111 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 532 IncrementalHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 66 mSDtfsCounter, 532 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 582 GetRequests, 425 SyntacticMatches, 11 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=473occurred in iteration=12, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 960 NumberOfCodeBlocks, 911 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1110 ConstructedInterpolants, 0 QuantifiedInterpolants, 2536 SizeOfPredicates, 28 NumberOfNonLiveVariables, 542 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 608/1304 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:39:58,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112a93e3-2b2e-4896-81ad-7ec597bebb6a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE