./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN --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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- 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-6b4ec56 [2022-11-20 09:27:07,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:07,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:07,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:07,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:07,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:07,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:07,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:07,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:07,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:07,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:07,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:07,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:07,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:07,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:07,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:07,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:07,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:07,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:07,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:07,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:07,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:07,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:07,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:07,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:07,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:07,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:07,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:07,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:07,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:07,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:07,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:07,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:07,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:07,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:07,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:07,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:07,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:07,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:07,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:07,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:07,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:27:07,814 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:07,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:07,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:07,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:07,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:07,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:07,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:07,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:07,818 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:07,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:07,819 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:07,819 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:27:07,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:07,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:07,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:07,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:07,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:07,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:07,821 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:27:07,821 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:07,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:07,822 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:07,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:07,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:07,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:07,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:07,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:07,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:07,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:07,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:07,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:07,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:07,825 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:07,825 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:07,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:07,826 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_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2022-11-20 09:27:08,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:08,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:08,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:08,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:08,141 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:08,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-11-20 09:27:11,203 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:11,532 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:11,533 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-11-20 09:27:11,547 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/data/f2e2f9080/41a97a1d4d3d44e1b1d9a4d0581a8a8a/FLAG6da1e9045 [2022-11-20 09:27:11,571 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/data/f2e2f9080/41a97a1d4d3d44e1b1d9a4d0581a8a8a [2022-11-20 09:27:11,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:11,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:11,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:11,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:11,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:11,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25bb48e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11, skipping insertion in model container [2022-11-20 09:27:11,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:11,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:12,268 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-11-20 09:27:12,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,325 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:12,386 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-11-20 09:27:12,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,499 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:12,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12 WrapperNode [2022-11-20 09:27:12,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:12,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:12,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:12,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,577 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2022-11-20 09:27:12,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:12,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:12,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,644 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:12,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:12,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:12,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:12,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:12,716 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:12,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:27:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:27:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 09:27:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 09:27:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 09:27:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:12,786 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:27:13,013 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:13,015 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:13,354 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:13,381 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:13,381 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-20 09:27:13,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:13 BoogieIcfgContainer [2022-11-20 09:27:13,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:13,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:13,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:13,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:13,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:11" (1/3) ... [2022-11-20 09:27:13,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1244dc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:13, skipping insertion in model container [2022-11-20 09:27:13,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (2/3) ... [2022-11-20 09:27:13,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1244dc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:13, skipping insertion in model container [2022-11-20 09:27:13,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:13" (3/3) ... [2022-11-20 09:27:13,393 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2022-11-20 09:27:13,415 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:27:13,447 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:13,447 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 09:27:13,447 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:27:13,533 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 09:27:13,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 178 transitions, 364 flow [2022-11-20 09:27:13,744 INFO L130 PetriNetUnfolder]: 24/217 cut-off events. [2022-11-20 09:27:13,750 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 09:27:13,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 217 events. 24/217 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 631 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2022-11-20 09:27:13,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 178 transitions, 364 flow [2022-11-20 09:27:13,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 175 transitions, 358 flow [2022-11-20 09:27:13,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:13,797 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;@5e218484, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:13,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-20 09:27:13,814 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-20 09:27:13,814 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:27:13,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:13,815 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:13,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 09:27:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:13,822 INFO L85 PathProgramCache]: Analyzing trace with hash -360675826, now seen corresponding path program 1 times [2022-11-20 09:27:13,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:13,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400521132] [2022-11-20 09:27:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:13,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400521132] [2022-11-20 09:27:14,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400521132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:14,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:14,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:14,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286439067] [2022-11-20 09:27:14,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:14,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:14,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:14,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:14,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 178 [2022-11-20 09:27:14,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 175 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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) [2022-11-20 09:27:14,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:14,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 178 [2022-11-20 09:27:14,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:14,547 INFO L130 PetriNetUnfolder]: 1/159 cut-off events. [2022-11-20 09:27:14,547 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-20 09:27:14,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 159 events. 1/159 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 252 event pairs, 0 based on Foata normal form. 55/201 useless extension candidates. Maximal degree in co-relation 118. Up to 7 conditions per place. [2022-11-20 09:27:14,553 INFO L137 encePairwiseOnDemand]: 154/178 looper letters, 10 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2022-11-20 09:27:14,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 350 flow [2022-11-20 09:27:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 801 transitions. [2022-11-20 09:27:14,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-20 09:27:14,580 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 801 transitions. [2022-11-20 09:27:14,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 801 transitions. [2022-11-20 09:27:14,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:14,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 801 transitions. [2022-11-20 09:27:14,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 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) [2022-11-20 09:27:14,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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) [2022-11-20 09:27:14,604 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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) [2022-11-20 09:27:14,606 INFO L175 Difference]: Start difference. First operand has 160 places, 175 transitions, 358 flow. Second operand 5 states and 801 transitions. [2022-11-20 09:27:14,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 350 flow [2022-11-20 09:27:14,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 157 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:27:14,618 INFO L231 Difference]: Finished difference. Result has 162 places, 155 transitions, 330 flow [2022-11-20 09:27:14,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=162, PETRI_TRANSITIONS=155} [2022-11-20 09:27:14,626 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 2 predicate places. [2022-11-20 09:27:14,626 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 155 transitions, 330 flow [2022-11-20 09:27:14,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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) [2022-11-20 09:27:14,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:14,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:14,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:14,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 09:27:14,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:14,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1389769149, now seen corresponding path program 1 times [2022-11-20 09:27:14,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:14,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407836584] [2022-11-20 09:27:14,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:14,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:14,719 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:14,778 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:14,780 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 09:27:14,782 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-20 09:27:14,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-20 09:27:14,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-20 09:27:14,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-20 09:27:14,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-20 09:27:14,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-20 09:27:14,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-20 09:27:14,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-20 09:27:14,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-20 09:27:14,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-20 09:27:14,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-20 09:27:14,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-20 09:27:14,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-20 09:27:14,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-20 09:27:14,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-20 09:27:14,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-20 09:27:14,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-20 09:27:14,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-20 09:27:14,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-20 09:27:14,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-20 09:27:14,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-20 09:27:14,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:14,805 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 09:27:14,809 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 09:27:14,810 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 09:27:14,884 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 09:27:14,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 542 flow [2022-11-20 09:27:14,989 INFO L130 PetriNetUnfolder]: 45/377 cut-off events. [2022-11-20 09:27:14,989 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 09:27:14,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 377 events. 45/377 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1434 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-11-20 09:27:14,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 262 transitions, 542 flow [2022-11-20 09:27:15,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 262 transitions, 542 flow [2022-11-20 09:27:15,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:15,004 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;@5e218484, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:15,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-20 09:27:15,012 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-20 09:27:15,012 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:27:15,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:15,013 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:15,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 09:27:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:15,014 INFO L85 PathProgramCache]: Analyzing trace with hash -538276192, now seen corresponding path program 1 times [2022-11-20 09:27:15,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:15,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231095271] [2022-11-20 09:27:15,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:15,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:15,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:15,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231095271] [2022-11-20 09:27:15,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231095271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:15,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:15,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:15,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810457732] [2022-11-20 09:27:15,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:15,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:15,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:15,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:15,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 262 [2022-11-20 09:27:15,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 262 transitions, 542 flow. Second operand has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 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) [2022-11-20 09:27:15,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:15,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 262 [2022-11-20 09:27:15,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:15,282 INFO L130 PetriNetUnfolder]: 4/312 cut-off events. [2022-11-20 09:27:15,282 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-20 09:27:15,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 312 events. 4/312 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 986 event pairs, 0 based on Foata normal form. 141/419 useless extension candidates. Maximal degree in co-relation 212. Up to 21 conditions per place. [2022-11-20 09:27:15,289 INFO L137 encePairwiseOnDemand]: 226/262 looper letters, 19 selfloop transitions, 4 changer transitions 0/239 dead transitions. [2022-11-20 09:27:15,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 239 transitions, 542 flow [2022-11-20 09:27:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:15,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:15,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1172 transitions. [2022-11-20 09:27:15,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946564885496183 [2022-11-20 09:27:15,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1172 transitions. [2022-11-20 09:27:15,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1172 transitions. [2022-11-20 09:27:15,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:15,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1172 transitions. [2022-11-20 09:27:15,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 234.4) internal successors, (1172), 5 states have internal predecessors, (1172), 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) [2022-11-20 09:27:15,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-20 09:27:15,302 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-20 09:27:15,302 INFO L175 Difference]: Start difference. First operand has 234 places, 262 transitions, 542 flow. Second operand 5 states and 1172 transitions. [2022-11-20 09:27:15,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 239 transitions, 542 flow [2022-11-20 09:27:15,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 239 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:27:15,309 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 514 flow [2022-11-20 09:27:15,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=514, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2022-11-20 09:27:15,310 INFO L288 CegarLoopForPetriNet]: 234 programPoint places, 6 predicate places. [2022-11-20 09:27:15,310 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 514 flow [2022-11-20 09:27:15,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 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) [2022-11-20 09:27:15,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:15,312 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:15,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:27:15,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 09:27:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:15,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1150986760, now seen corresponding path program 1 times [2022-11-20 09:27:15,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:15,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871338277] [2022-11-20 09:27:15,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:15,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:15,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:15,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871338277] [2022-11-20 09:27:15,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871338277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:15,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:15,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939535345] [2022-11-20 09:27:15,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:15,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:15,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:15,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 262 [2022-11-20 09:27:15,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 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) [2022-11-20 09:27:15,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:15,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 262 [2022-11-20 09:27:15,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:15,543 INFO L130 PetriNetUnfolder]: 4/311 cut-off events. [2022-11-20 09:27:15,543 INFO L131 PetriNetUnfolder]: For 51/126 co-relation queries the response was YES. [2022-11-20 09:27:15,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 311 events. 4/311 cut-off events. For 51/126 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 977 event pairs, 0 based on Foata normal form. 7/288 useless extension candidates. Maximal degree in co-relation 294. Up to 10 conditions per place. [2022-11-20 09:27:15,550 INFO L137 encePairwiseOnDemand]: 256/262 looper letters, 11 selfloop transitions, 8 changer transitions 0/235 dead transitions. [2022-11-20 09:27:15,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 235 transitions, 550 flow [2022-11-20 09:27:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:15,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1097 transitions. [2022-11-20 09:27:15,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8374045801526717 [2022-11-20 09:27:15,554 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1097 transitions. [2022-11-20 09:27:15,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1097 transitions. [2022-11-20 09:27:15,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:15,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1097 transitions. [2022-11-20 09:27:15,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 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) [2022-11-20 09:27:15,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-20 09:27:15,568 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-20 09:27:15,569 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 514 flow. Second operand 5 states and 1097 transitions. [2022-11-20 09:27:15,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 235 transitions, 550 flow [2022-11-20 09:27:15,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 235 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:27:15,594 INFO L231 Difference]: Finished difference. Result has 243 places, 235 transitions, 532 flow [2022-11-20 09:27:15,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=532, PETRI_PLACES=243, PETRI_TRANSITIONS=235} [2022-11-20 09:27:15,597 INFO L288 CegarLoopForPetriNet]: 234 programPoint places, 9 predicate places. [2022-11-20 09:27:15,597 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 235 transitions, 532 flow [2022-11-20 09:27:15,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 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) [2022-11-20 09:27:15,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:15,600 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:15,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:27:15,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 09:27:15,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:15,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1394403279, now seen corresponding path program 1 times [2022-11-20 09:27:15,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:15,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600545164] [2022-11-20 09:27:15,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:15,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:15,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:15,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600545164] [2022-11-20 09:27:15,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600545164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:15,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:15,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:15,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222887297] [2022-11-20 09:27:15,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:15,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:15,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:15,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:15,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 262 [2022-11-20 09:27:15,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 235 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 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) [2022-11-20 09:27:15,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:15,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 262 [2022-11-20 09:27:15,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:16,436 INFO L130 PetriNetUnfolder]: 479/2630 cut-off events. [2022-11-20 09:27:16,436 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-11-20 09:27:16,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3555 conditions, 2630 events. 479/2630 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 24302 event pairs, 135 based on Foata normal form. 0/2306 useless extension candidates. Maximal degree in co-relation 2351. Up to 579 conditions per place. [2022-11-20 09:27:16,471 INFO L137 encePairwiseOnDemand]: 253/262 looper letters, 53 selfloop transitions, 9 changer transitions 0/269 dead transitions. [2022-11-20 09:27:16,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 269 transitions, 742 flow [2022-11-20 09:27:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1086 transitions. [2022-11-20 09:27:16,474 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290076335877863 [2022-11-20 09:27:16,474 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1086 transitions. [2022-11-20 09:27:16,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1086 transitions. [2022-11-20 09:27:16,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:16,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1086 transitions. [2022-11-20 09:27:16,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 217.2) internal successors, (1086), 5 states have internal predecessors, (1086), 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) [2022-11-20 09:27:16,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-20 09:27:16,482 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-20 09:27:16,482 INFO L175 Difference]: Start difference. First operand has 243 places, 235 transitions, 532 flow. Second operand 5 states and 1086 transitions. [2022-11-20 09:27:16,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 269 transitions, 742 flow [2022-11-20 09:27:16,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 269 transitions, 730 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:27:16,490 INFO L231 Difference]: Finished difference. Result has 247 places, 243 transitions, 591 flow [2022-11-20 09:27:16,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=247, PETRI_TRANSITIONS=243} [2022-11-20 09:27:16,492 INFO L288 CegarLoopForPetriNet]: 234 programPoint places, 13 predicate places. [2022-11-20 09:27:16,493 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 243 transitions, 591 flow [2022-11-20 09:27:16,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 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) [2022-11-20 09:27:16,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:16,494 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:16,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:27:16,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 09:27:16,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:16,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1320851748, now seen corresponding path program 1 times [2022-11-20 09:27:16,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:16,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704687333] [2022-11-20 09:27:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:16,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:16,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:16,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704687333] [2022-11-20 09:27:16,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704687333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:16,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833654338] [2022-11-20 09:27:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:16,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:16,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:16,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:16,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:27:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:27:16,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:16,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:27:16,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833654338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:16,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:27:16,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:27:16,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485996399] [2022-11-20 09:27:16,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:16,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:16,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:16,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 262 [2022-11-20 09:27:16,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 243 transitions, 591 flow. Second operand has 6 states, 6 states have (on average 218.66666666666666) internal successors, (1312), 6 states have internal predecessors, (1312), 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) [2022-11-20 09:27:16,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:16,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 262 [2022-11-20 09:27:16,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:17,166 INFO L130 PetriNetUnfolder]: 13/578 cut-off events. [2022-11-20 09:27:17,166 INFO L131 PetriNetUnfolder]: For 132/293 co-relation queries the response was YES. [2022-11-20 09:27:17,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 578 events. 13/578 cut-off events. For 132/293 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2753 event pairs, 0 based on Foata normal form. 11/527 useless extension candidates. Maximal degree in co-relation 545. Up to 21 conditions per place. [2022-11-20 09:27:17,176 INFO L137 encePairwiseOnDemand]: 257/262 looper letters, 15 selfloop transitions, 6 changer transitions 0/245 dead transitions. [2022-11-20 09:27:17,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 245 transitions, 635 flow [2022-11-20 09:27:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1534 transitions. [2022-11-20 09:27:17,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.836423118865867 [2022-11-20 09:27:17,180 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1534 transitions. [2022-11-20 09:27:17,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1534 transitions. [2022-11-20 09:27:17,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:17,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1534 transitions. [2022-11-20 09:27:17,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 219.14285714285714) internal successors, (1534), 7 states have internal predecessors, (1534), 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) [2022-11-20 09:27:17,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 262.0) internal successors, (2096), 8 states have internal predecessors, (2096), 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) [2022-11-20 09:27:17,190 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 262.0) internal successors, (2096), 8 states have internal predecessors, (2096), 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) [2022-11-20 09:27:17,190 INFO L175 Difference]: Start difference. First operand has 247 places, 243 transitions, 591 flow. Second operand 7 states and 1534 transitions. [2022-11-20 09:27:17,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 245 transitions, 635 flow [2022-11-20 09:27:17,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 245 transitions, 630 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:27:17,198 INFO L231 Difference]: Finished difference. Result has 251 places, 242 transitions, 594 flow [2022-11-20 09:27:17,199 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=251, PETRI_TRANSITIONS=242} [2022-11-20 09:27:17,202 INFO L288 CegarLoopForPetriNet]: 234 programPoint places, 17 predicate places. [2022-11-20 09:27:17,203 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 242 transitions, 594 flow [2022-11-20 09:27:17,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 218.66666666666666) internal successors, (1312), 6 states have internal predecessors, (1312), 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) [2022-11-20 09:27:17,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:17,204 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:17,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:17,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:27:17,411 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 09:27:17,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1595362647, now seen corresponding path program 1 times [2022-11-20 09:27:17,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:17,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907518222] [2022-11-20 09:27:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:17,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:17,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:17,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907518222] [2022-11-20 09:27:17,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907518222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:17,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:17,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:17,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852374642] [2022-11-20 09:27:17,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:17,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:17,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:17,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:17,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:17,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 262 [2022-11-20 09:27:17,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 242 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 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) [2022-11-20 09:27:17,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:17,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 262 [2022-11-20 09:27:17,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:18,281 INFO L130 PetriNetUnfolder]: 509/2673 cut-off events. [2022-11-20 09:27:18,281 INFO L131 PetriNetUnfolder]: For 379/379 co-relation queries the response was YES. [2022-11-20 09:27:18,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3923 conditions, 2673 events. 509/2673 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 24960 event pairs, 150 based on Foata normal form. 0/2398 useless extension candidates. Maximal degree in co-relation 2699. Up to 635 conditions per place. [2022-11-20 09:27:18,312 INFO L137 encePairwiseOnDemand]: 253/262 looper letters, 53 selfloop transitions, 11 changer transitions 0/271 dead transitions. [2022-11-20 09:27:18,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 271 transitions, 812 flow [2022-11-20 09:27:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1086 transitions. [2022-11-20 09:27:18,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290076335877863 [2022-11-20 09:27:18,316 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1086 transitions. [2022-11-20 09:27:18,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1086 transitions. [2022-11-20 09:27:18,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:18,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1086 transitions. [2022-11-20 09:27:18,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 217.2) internal successors, (1086), 5 states have internal predecessors, (1086), 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) [2022-11-20 09:27:18,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-20 09:27:18,326 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-20 09:27:18,326 INFO L175 Difference]: Start difference. First operand has 251 places, 242 transitions, 594 flow. Second operand 5 states and 1086 transitions. [2022-11-20 09:27:18,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 271 transitions, 812 flow [2022-11-20 09:27:18,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 271 transitions, 801 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:18,337 INFO L231 Difference]: Finished difference. Result has 253 places, 246 transitions, 644 flow [2022-11-20 09:27:18,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=644, PETRI_PLACES=253, PETRI_TRANSITIONS=246} [2022-11-20 09:27:18,343 INFO L288 CegarLoopForPetriNet]: 234 programPoint places, 19 predicate places. [2022-11-20 09:27:18,343 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 246 transitions, 644 flow [2022-11-20 09:27:18,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 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) [2022-11-20 09:27:18,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:18,344 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:18,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:27:18,344 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 09:27:18,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:18,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1526931209, now seen corresponding path program 1 times [2022-11-20 09:27:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:18,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298753949] [2022-11-20 09:27:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:18,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:18,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:27:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:27:18,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:27:18,407 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 09:27:18,408 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-20 09:27:18,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-11-20 09:27:18,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-11-20 09:27:18,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-11-20 09:27:18,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-11-20 09:27:18,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-11-20 09:27:18,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-11-20 09:27:18,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-11-20 09:27:18,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-11-20 09:27:18,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-11-20 09:27:18,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-11-20 09:27:18,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-11-20 09:27:18,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-11-20 09:27:18,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-11-20 09:27:18,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-11-20 09:27:18,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-11-20 09:27:18,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-11-20 09:27:18,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-11-20 09:27:18,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-11-20 09:27:18,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-11-20 09:27:18,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-11-20 09:27:18,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-11-20 09:27:18,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-11-20 09:27:18,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-11-20 09:27:18,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-11-20 09:27:18,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-11-20 09:27:18,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-11-20 09:27:18,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-11-20 09:27:18,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-11-20 09:27:18,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:27:18,420 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 09:27:18,426 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 09:27:18,426 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 09:27:18,486 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 09:27:18,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 346 transitions, 722 flow [2022-11-20 09:27:18,613 INFO L130 PetriNetUnfolder]: 71/578 cut-off events. [2022-11-20 09:27:18,613 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 09:27:18,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 578 events. 71/578 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2405 event pairs, 1 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 385. Up to 16 conditions per place. [2022-11-20 09:27:18,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 346 transitions, 722 flow [2022-11-20 09:27:18,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 346 transitions, 722 flow [2022-11-20 09:27:18,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:18,652 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;@5e218484, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:18,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-20 09:27:18,658 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-20 09:27:18,658 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:27:18,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:18,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:18,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-20 09:27:18,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:18,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1366780082, now seen corresponding path program 1 times [2022-11-20 09:27:18,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:18,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938037765] [2022-11-20 09:27:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:18,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:18,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:18,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938037765] [2022-11-20 09:27:18,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938037765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:18,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:18,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:18,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869535189] [2022-11-20 09:27:18,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:18,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:18,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:18,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:18,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:18,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 346 [2022-11-20 09:27:18,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 346 transitions, 722 flow. Second operand has 4 states, 4 states have (on average 287.75) internal successors, (1151), 4 states have internal predecessors, (1151), 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) [2022-11-20 09:27:18,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:18,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 346 [2022-11-20 09:27:18,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:18,980 INFO L130 PetriNetUnfolder]: 10/492 cut-off events. [2022-11-20 09:27:18,980 INFO L131 PetriNetUnfolder]: For 73/199 co-relation queries the response was YES. [2022-11-20 09:27:18,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 492 events. 10/492 cut-off events. For 73/199 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1938 event pairs, 1 based on Foata normal form. 389/822 useless extension candidates. Maximal degree in co-relation 352. Up to 40 conditions per place. [2022-11-20 09:27:18,993 INFO L137 encePairwiseOnDemand]: 298/346 looper letters, 21 selfloop transitions, 4 changer transitions 0/311 dead transitions. [2022-11-20 09:27:18,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 311 transitions, 702 flow [2022-11-20 09:27:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1536 transitions. [2022-11-20 09:27:18,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8878612716763006 [2022-11-20 09:27:18,997 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1536 transitions. [2022-11-20 09:27:18,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1536 transitions. [2022-11-20 09:27:18,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:18,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1536 transitions. [2022-11-20 09:27:19,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 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) [2022-11-20 09:27:19,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 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) [2022-11-20 09:27:19,007 INFO L175 Difference]: Start difference. First operand has 306 places, 346 transitions, 722 flow. Second operand 5 states and 1536 transitions. [2022-11-20 09:27:19,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 311 transitions, 702 flow [2022-11-20 09:27:19,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 311 transitions, 702 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:27:19,013 INFO L231 Difference]: Finished difference. Result has 312 places, 307 transitions, 670 flow [2022-11-20 09:27:19,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=670, PETRI_PLACES=312, PETRI_TRANSITIONS=307} [2022-11-20 09:27:19,014 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 6 predicate places. [2022-11-20 09:27:19,014 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 307 transitions, 670 flow [2022-11-20 09:27:19,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.75) internal successors, (1151), 4 states have internal predecessors, (1151), 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) [2022-11-20 09:27:19,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:19,016 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:19,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:27:19,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-20 09:27:19,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:19,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1677962260, now seen corresponding path program 1 times [2022-11-20 09:27:19,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:19,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302175200] [2022-11-20 09:27:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:19,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:19,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302175200] [2022-11-20 09:27:19,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302175200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:19,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:19,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:19,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930930647] [2022-11-20 09:27:19,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:19,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:19,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:19,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:19,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:19,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 346 [2022-11-20 09:27:19,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 307 transitions, 670 flow. Second operand has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 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) [2022-11-20 09:27:19,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:19,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 346 [2022-11-20 09:27:19,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:19,235 INFO L130 PetriNetUnfolder]: 10/490 cut-off events. [2022-11-20 09:27:19,235 INFO L131 PetriNetUnfolder]: For 80/197 co-relation queries the response was YES. [2022-11-20 09:27:19,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 490 events. 10/490 cut-off events. For 80/197 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1926 event pairs, 1 based on Foata normal form. 11/449 useless extension candidates. Maximal degree in co-relation 509. Up to 20 conditions per place. [2022-11-20 09:27:19,248 INFO L137 encePairwiseOnDemand]: 340/346 looper letters, 13 selfloop transitions, 8 changer transitions 0/307 dead transitions. [2022-11-20 09:27:19,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 307 transitions, 710 flow [2022-11-20 09:27:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:19,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1449 transitions. [2022-11-20 09:27:19,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8375722543352602 [2022-11-20 09:27:19,252 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1449 transitions. [2022-11-20 09:27:19,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1449 transitions. [2022-11-20 09:27:19,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:19,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1449 transitions. [2022-11-20 09:27:19,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.8) internal successors, (1449), 5 states have internal predecessors, (1449), 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) [2022-11-20 09:27:19,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 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) [2022-11-20 09:27:19,261 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 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) [2022-11-20 09:27:19,261 INFO L175 Difference]: Start difference. First operand has 312 places, 307 transitions, 670 flow. Second operand 5 states and 1449 transitions. [2022-11-20 09:27:19,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 307 transitions, 710 flow [2022-11-20 09:27:19,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 307 transitions, 708 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:27:19,304 INFO L231 Difference]: Finished difference. Result has 315 places, 307 transitions, 688 flow [2022-11-20 09:27:19,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=688, PETRI_PLACES=315, PETRI_TRANSITIONS=307} [2022-11-20 09:27:19,306 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 9 predicate places. [2022-11-20 09:27:19,306 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 307 transitions, 688 flow [2022-11-20 09:27:19,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 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) [2022-11-20 09:27:19,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:19,307 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:19,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:27:19,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-20 09:27:19,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:19,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1843122591, now seen corresponding path program 1 times [2022-11-20 09:27:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:19,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814508389] [2022-11-20 09:27:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:19,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:19,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:19,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814508389] [2022-11-20 09:27:19,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814508389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:19,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:19,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:19,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772391704] [2022-11-20 09:27:19,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:19,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:19,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:19,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:19,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:19,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 346 [2022-11-20 09:27:19,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 307 transitions, 688 flow. Second operand has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 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) [2022-11-20 09:27:19,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:19,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 346 [2022-11-20 09:27:19,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:26,513 INFO L130 PetriNetUnfolder]: 8409/30796 cut-off events. [2022-11-20 09:27:26,513 INFO L131 PetriNetUnfolder]: For 2606/2606 co-relation queries the response was YES. [2022-11-20 09:27:26,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43840 conditions, 30796 events. 8409/30796 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 1354. Compared 415603 event pairs, 2861 based on Foata normal form. 0/27095 useless extension candidates. Maximal degree in co-relation 13928. Up to 9129 conditions per place. [2022-11-20 09:27:26,988 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 79 selfloop transitions, 13 changer transitions 0/361 dead transitions. [2022-11-20 09:27:26,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 361 transitions, 1022 flow [2022-11-20 09:27:26,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1426 transitions. [2022-11-20 09:27:26,992 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8242774566473988 [2022-11-20 09:27:26,992 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1426 transitions. [2022-11-20 09:27:26,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1426 transitions. [2022-11-20 09:27:26,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:26,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1426 transitions. [2022-11-20 09:27:26,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 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) [2022-11-20 09:27:27,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 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) [2022-11-20 09:27:27,002 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 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) [2022-11-20 09:27:27,003 INFO L175 Difference]: Start difference. First operand has 315 places, 307 transitions, 688 flow. Second operand 5 states and 1426 transitions. [2022-11-20 09:27:27,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 361 transitions, 1022 flow [2022-11-20 09:27:27,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 361 transitions, 1010 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:27:27,011 INFO L231 Difference]: Finished difference. Result has 319 places, 319 transitions, 777 flow [2022-11-20 09:27:27,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=777, PETRI_PLACES=319, PETRI_TRANSITIONS=319} [2022-11-20 09:27:27,013 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 13 predicate places. [2022-11-20 09:27:27,013 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 319 transitions, 777 flow [2022-11-20 09:27:27,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 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) [2022-11-20 09:27:27,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:27,014 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:27,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:27:27,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-20 09:27:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:27,015 INFO L85 PathProgramCache]: Analyzing trace with hash -477221606, now seen corresponding path program 1 times [2022-11-20 09:27:27,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:27,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709446114] [2022-11-20 09:27:27,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:27,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:27,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:27,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709446114] [2022-11-20 09:27:27,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709446114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:27,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695319205] [2022-11-20 09:27:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:27,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:27,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:27,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:27,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:27:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:27:27,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:27,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:27:27,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695319205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:27,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:27:27,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:27:27,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558930137] [2022-11-20 09:27:27,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:27,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:27,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:27,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:27,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:27,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 346 [2022-11-20 09:27:27,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 319 transitions, 777 flow. Second operand has 6 states, 6 states have (on average 288.6666666666667) internal successors, (1732), 6 states have internal predecessors, (1732), 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) [2022-11-20 09:27:27,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:27,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 346 [2022-11-20 09:27:27,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:27,931 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][222], [319#true, 328#true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), t_funThread2of3ForFork0NotInUse, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), 176#L963-5true, Black: 312#(= 0 |ULTIMATE.start_main_#t~post41#1|), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:27,931 INFO L383 tUnfolder$Statistics]: this new event has 221 ancestors and is cut-off event [2022-11-20 09:27:27,931 INFO L386 tUnfolder$Statistics]: existing Event has 162 ancestors and is cut-off event [2022-11-20 09:27:27,931 INFO L386 tUnfolder$Statistics]: existing Event has 162 ancestors and is cut-off event [2022-11-20 09:27:27,931 INFO L386 tUnfolder$Statistics]: existing Event has 106 ancestors and is cut-off event [2022-11-20 09:27:27,934 INFO L130 PetriNetUnfolder]: 119/2105 cut-off events. [2022-11-20 09:27:27,934 INFO L131 PetriNetUnfolder]: For 446/1114 co-relation queries the response was YES. [2022-11-20 09:27:27,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 2105 events. 119/2105 cut-off events. For 446/1114 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 17268 event pairs, 30 based on Foata normal form. 36/1875 useless extension candidates. Maximal degree in co-relation 2222. Up to 110 conditions per place. [2022-11-20 09:27:27,974 INFO L137 encePairwiseOnDemand]: 341/346 looper letters, 17 selfloop transitions, 6 changer transitions 0/321 dead transitions. [2022-11-20 09:27:27,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 321 transitions, 825 flow [2022-11-20 09:27:27,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2026 transitions. [2022-11-20 09:27:27,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8364987613542527 [2022-11-20 09:27:27,979 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2026 transitions. [2022-11-20 09:27:27,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2026 transitions. [2022-11-20 09:27:27,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:27,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2026 transitions. [2022-11-20 09:27:27,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.42857142857144) internal successors, (2026), 7 states have internal predecessors, (2026), 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) [2022-11-20 09:27:28,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 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) [2022-11-20 09:27:28,008 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 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) [2022-11-20 09:27:28,008 INFO L175 Difference]: Start difference. First operand has 319 places, 319 transitions, 777 flow. Second operand 7 states and 2026 transitions. [2022-11-20 09:27:28,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 321 transitions, 825 flow [2022-11-20 09:27:28,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 321 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:27:28,015 INFO L231 Difference]: Finished difference. Result has 323 places, 318 transitions, 778 flow [2022-11-20 09:27:28,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=778, PETRI_PLACES=323, PETRI_TRANSITIONS=318} [2022-11-20 09:27:28,017 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 17 predicate places. [2022-11-20 09:27:28,017 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 318 transitions, 778 flow [2022-11-20 09:27:28,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 288.6666666666667) internal successors, (1732), 6 states have internal predecessors, (1732), 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) [2022-11-20 09:27:28,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:28,018 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:28,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:28,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19a6564-2aed-4707-aaa6-bef1bad674a4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 09:27:28,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-20 09:27:28,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,224 INFO L85 PathProgramCache]: Analyzing trace with hash -110659799, now seen corresponding path program 1 times [2022-11-20 09:27:28,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774625925] [2022-11-20 09:27:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:28,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:28,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774625925] [2022-11-20 09:27:28,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774625925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:28,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:28,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:28,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621349030] [2022-11-20 09:27:28,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:28,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:28,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:28,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:28,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:28,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 346 [2022-11-20 09:27:28,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 318 transitions, 778 flow. Second operand has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 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) [2022-11-20 09:27:28,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:28,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 346 [2022-11-20 09:27:28,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:34,486 INFO L130 PetriNetUnfolder]: 9389/34325 cut-off events. [2022-11-20 09:27:34,487 INFO L131 PetriNetUnfolder]: For 7419/7419 co-relation queries the response was YES. [2022-11-20 09:27:34,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53604 conditions, 34325 events. 9389/34325 cut-off events. For 7419/7419 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 473172 event pairs, 3631 based on Foata normal form. 0/30755 useless extension candidates. Maximal degree in co-relation 38123. Up to 10517 conditions per place. [2022-11-20 09:27:34,997 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 79 selfloop transitions, 17 changer transitions 0/365 dead transitions. [2022-11-20 09:27:34,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 365 transitions, 1132 flow [2022-11-20 09:27:34,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1426 transitions. [2022-11-20 09:27:35,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8242774566473988 [2022-11-20 09:27:35,002 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1426 transitions. [2022-11-20 09:27:35,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1426 transitions. [2022-11-20 09:27:35,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:35,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1426 transitions. [2022-11-20 09:27:35,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 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) [2022-11-20 09:27:35,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 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) [2022-11-20 09:27:35,011 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 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) [2022-11-20 09:27:35,011 INFO L175 Difference]: Start difference. First operand has 323 places, 318 transitions, 778 flow. Second operand 5 states and 1426 transitions. [2022-11-20 09:27:35,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 365 transitions, 1132 flow [2022-11-20 09:27:35,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 365 transitions, 1121 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:35,068 INFO L231 Difference]: Finished difference. Result has 325 places, 324 transitions, 856 flow [2022-11-20 09:27:35,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=856, PETRI_PLACES=325, PETRI_TRANSITIONS=324} [2022-11-20 09:27:35,070 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 19 predicate places. [2022-11-20 09:27:35,070 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 324 transitions, 856 flow [2022-11-20 09:27:35,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 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) [2022-11-20 09:27:35,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:35,071 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:35,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:27:35,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-20 09:27:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:35,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1075673722, now seen corresponding path program 1 times [2022-11-20 09:27:35,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:35,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633058266] [2022-11-20 09:27:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:35,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:35,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:35,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633058266] [2022-11-20 09:27:35,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633058266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:35,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:35,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:27:35,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707116943] [2022-11-20 09:27:35,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:35,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:35,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:35,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:35,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:35,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 346 [2022-11-20 09:27:35,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 324 transitions, 856 flow. Second operand has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 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) [2022-11-20 09:27:35,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:35,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 346 [2022-11-20 09:27:35,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:44,993 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [319#true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, 176#L963-5true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 258#L938-6true, 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:44,993 INFO L383 tUnfolder$Statistics]: this new event has 195 ancestors and is cut-off event [2022-11-20 09:27:44,994 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-20 09:27:44,994 INFO L386 tUnfolder$Statistics]: existing Event has 192 ancestors and is cut-off event [2022-11-20 09:27:44,994 INFO L386 tUnfolder$Statistics]: existing Event has 136 ancestors and is cut-off event [2022-11-20 09:27:45,053 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [120#L942-6true, 319#true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0InUse, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), 176#L963-5true, Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:45,054 INFO L383 tUnfolder$Statistics]: this new event has 197 ancestors and is cut-off event [2022-11-20 09:27:45,054 INFO L386 tUnfolder$Statistics]: existing Event has 194 ancestors and is cut-off event [2022-11-20 09:27:45,054 INFO L386 tUnfolder$Statistics]: existing Event has 138 ancestors and is cut-off event [2022-11-20 09:27:45,054 INFO L386 tUnfolder$Statistics]: existing Event has 141 ancestors and is cut-off event [2022-11-20 09:27:45,127 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [319#true, 117#L938-13true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), 176#L963-5true, Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:45,127 INFO L383 tUnfolder$Statistics]: this new event has 201 ancestors and is cut-off event [2022-11-20 09:27:45,127 INFO L386 tUnfolder$Statistics]: existing Event has 198 ancestors and is cut-off event [2022-11-20 09:27:45,127 INFO L386 tUnfolder$Statistics]: existing Event has 142 ancestors and is cut-off event [2022-11-20 09:27:45,128 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-20 09:27:45,150 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [319#true, 300#L942-13true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), 176#L963-5true, Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:45,151 INFO L383 tUnfolder$Statistics]: this new event has 203 ancestors and is cut-off event [2022-11-20 09:27:45,151 INFO L386 tUnfolder$Statistics]: existing Event has 200 ancestors and is cut-off event [2022-11-20 09:27:45,151 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-20 09:27:45,151 INFO L386 tUnfolder$Statistics]: existing Event has 144 ancestors and is cut-off event [2022-11-20 09:27:45,165 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [319#true, 273#L938-16true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, 176#L963-5true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:45,165 INFO L383 tUnfolder$Statistics]: this new event has 204 ancestors and is cut-off event [2022-11-20 09:27:45,165 INFO L386 tUnfolder$Statistics]: existing Event has 148 ancestors and is cut-off event [2022-11-20 09:27:45,165 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-20 09:27:45,165 INFO L386 tUnfolder$Statistics]: existing Event has 201 ancestors and is cut-off event [2022-11-20 09:27:45,180 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [30#L942-16true, 319#true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), 176#L963-5true, Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:45,181 INFO L383 tUnfolder$Statistics]: this new event has 206 ancestors and is cut-off event [2022-11-20 09:27:45,181 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-20 09:27:45,181 INFO L386 tUnfolder$Statistics]: existing Event has 203 ancestors and is cut-off event [2022-11-20 09:27:45,181 INFO L386 tUnfolder$Statistics]: existing Event has 150 ancestors and is cut-off event [2022-11-20 09:27:45,203 INFO L130 PetriNetUnfolder]: 16150/54120 cut-off events. [2022-11-20 09:27:45,203 INFO L131 PetriNetUnfolder]: For 13814/13850 co-relation queries the response was YES. [2022-11-20 09:27:45,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87939 conditions, 54120 events. 16150/54120 cut-off events. For 13814/13850 co-relation queries the response was YES. Maximal size of possible extension queue 2528. Compared 777928 event pairs, 4354 based on Foata normal form. 27/48341 useless extension candidates. Maximal degree in co-relation 75368. Up to 12768 conditions per place. [2022-11-20 09:27:46,070 INFO L137 encePairwiseOnDemand]: 328/346 looper letters, 148 selfloop transitions, 48 changer transitions 0/460 dead transitions. [2022-11-20 09:27:46,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 460 transitions, 1711 flow [2022-11-20 09:27:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:27:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 09:27:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2543 transitions. [2022-11-20 09:27:46,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8166345536287732 [2022-11-20 09:27:46,077 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2543 transitions. [2022-11-20 09:27:46,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2543 transitions. [2022-11-20 09:27:46,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:46,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2543 transitions. [2022-11-20 09:27:46,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 282.55555555555554) internal successors, (2543), 9 states have internal predecessors, (2543), 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) [2022-11-20 09:27:46,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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) [2022-11-20 09:27:46,089 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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) [2022-11-20 09:27:46,089 INFO L175 Difference]: Start difference. First operand has 325 places, 324 transitions, 856 flow. Second operand 9 states and 2543 transitions. [2022-11-20 09:27:46,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 460 transitions, 1711 flow [2022-11-20 09:27:46,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 460 transitions, 1700 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:27:46,135 INFO L231 Difference]: Finished difference. Result has 338 places, 355 transitions, 1196 flow [2022-11-20 09:27:46,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1196, PETRI_PLACES=338, PETRI_TRANSITIONS=355} [2022-11-20 09:27:46,137 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 32 predicate places. [2022-11-20 09:27:46,137 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 355 transitions, 1196 flow [2022-11-20 09:27:46,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 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) [2022-11-20 09:27:46,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:46,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:46,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:27:46,138 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-20 09:27:46,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:46,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1013851696, now seen corresponding path program 1 times [2022-11-20 09:27:46,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:46,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181239894] [2022-11-20 09:27:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:46,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:46,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:46,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181239894] [2022-11-20 09:27:46,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181239894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:46,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:46,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:27:46,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868665571] [2022-11-20 09:27:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:46,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:46,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:46,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 346 [2022-11-20 09:27:46,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 355 transitions, 1196 flow. Second operand has 5 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 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) [2022-11-20 09:27:46,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:46,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 346 [2022-11-20 09:27:46,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:48,832 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][297], [319#true, Black: 540#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), Black: 546#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (<= ~global~0 1)), Black: 541#(<= ~global~0 1), Black: 542#(<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1), Black: 548#(and (<= ~global~0 1) (<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1)), t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), t_funThread2of3ForFork0NotInUse, 537#true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, 556#true, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), 176#L963-5true, Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:48,833 INFO L383 tUnfolder$Statistics]: this new event has 165 ancestors and is cut-off event [2022-11-20 09:27:48,833 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-11-20 09:27:48,833 INFO L386 tUnfolder$Statistics]: existing Event has 162 ancestors and is cut-off event [2022-11-20 09:27:48,833 INFO L386 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2022-11-20 09:27:49,053 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][297], [319#true, Black: 540#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), Black: 546#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (<= ~global~0 1)), Black: 541#(<= ~global~0 1), Black: 542#(<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1), Black: 548#(and (<= ~global~0 1) (<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1)), t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0InUse, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, 556#true, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 76#t_funENTRYtrue, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), 176#L963-5true, Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:49,054 INFO L383 tUnfolder$Statistics]: this new event has 177 ancestors and is cut-off event [2022-11-20 09:27:49,054 INFO L386 tUnfolder$Statistics]: existing Event has 121 ancestors and is cut-off event [2022-11-20 09:27:49,054 INFO L386 tUnfolder$Statistics]: existing Event has 174 ancestors and is cut-off event [2022-11-20 09:27:49,054 INFO L386 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2022-11-20 09:27:49,130 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][297], [319#true, Black: 540#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), Black: 546#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (<= ~global~0 1)), Black: 541#(<= ~global~0 1), Black: 542#(<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1), Black: 548#(and (<= ~global~0 1) (<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1)), t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0InUse, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, 556#true, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 165#L951true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), 176#L963-5true, Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:49,131 INFO L383 tUnfolder$Statistics]: this new event has 182 ancestors and is cut-off event [2022-11-20 09:27:49,131 INFO L386 tUnfolder$Statistics]: existing Event has 126 ancestors and is cut-off event [2022-11-20 09:27:49,131 INFO L386 tUnfolder$Statistics]: existing Event has 182 ancestors and is cut-off event [2022-11-20 09:27:49,131 INFO L386 tUnfolder$Statistics]: existing Event has 179 ancestors and is cut-off event [2022-11-20 09:27:49,381 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][246], [319#true, Black: 540#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), Black: 546#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (<= ~global~0 1)), Black: 541#(<= ~global~0 1), Black: 542#(<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1), Black: 548#(and (<= ~global~0 1) (<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1)), t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0NotInUse, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), 176#L963-5true, 566#(and (<= |t_funThread1of3ForFork0_~g~0#1.offset| |#funAddr~good.offset|) (<= |t_funThread1of3ForFork0_##fun~~TO~VOID_#in~#fp#1.offset| |#funAddr~good.offset|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:49,382 INFO L383 tUnfolder$Statistics]: this new event has 221 ancestors and is cut-off event [2022-11-20 09:27:49,382 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-11-20 09:27:49,382 INFO L386 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2022-11-20 09:27:49,382 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-11-20 09:27:49,398 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1294] t_funEXIT-->L963-5: Formula: (= v_t_funThread2of3ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_13|} AuxVars[] AssignedVars[][306], [319#true, Black: 540#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), Black: 546#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (<= ~global~0 1)), Black: 541#(<= ~global~0 1), Black: 542#(<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1), Black: 548#(and (<= ~global~0 1) (<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1)), t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), 537#true, Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), t_funThread2of3ForFork0NotInUse, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, 556#true, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), 176#L963-5true, Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-20 09:27:49,398 INFO L383 tUnfolder$Statistics]: this new event has 218 ancestors and is cut-off event [2022-11-20 09:27:49,398 INFO L386 tUnfolder$Statistics]: existing Event has 162 ancestors and is cut-off event [2022-11-20 09:27:49,398 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-11-20 09:27:49,398 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-11-20 09:27:49,407 INFO L130 PetriNetUnfolder]: 1306/14525 cut-off events. [2022-11-20 09:27:49,408 INFO L131 PetriNetUnfolder]: For 6723/7442 co-relation queries the response was YES. [2022-11-20 09:27:49,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21425 conditions, 14525 events. 1306/14525 cut-off events. For 6723/7442 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 192475 event pairs, 347 based on Foata normal form. 89/12942 useless extension candidates. Maximal degree in co-relation 18548. Up to 980 conditions per place. [2022-11-20 09:27:49,690 INFO L137 encePairwiseOnDemand]: 341/346 looper letters, 35 selfloop transitions, 7 changer transitions 0/382 dead transitions. [2022-11-20 09:27:49,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 382 transitions, 1373 flow [2022-11-20 09:27:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2067 transitions. [2022-11-20 09:27:49,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8534269199009084 [2022-11-20 09:27:49,702 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2067 transitions. [2022-11-20 09:27:49,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2067 transitions. [2022-11-20 09:27:49,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:49,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2067 transitions. [2022-11-20 09:27:49,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 295.2857142857143) internal successors, (2067), 7 states have internal predecessors, (2067), 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) [2022-11-20 09:27:49,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 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) [2022-11-20 09:27:49,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 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) [2022-11-20 09:27:49,712 INFO L175 Difference]: Start difference. First operand has 338 places, 355 transitions, 1196 flow. Second operand 7 states and 2067 transitions. [2022-11-20 09:27:49,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 382 transitions, 1373 flow [2022-11-20 09:27:49,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 382 transitions, 1301 flow, removed 24 selfloop flow, removed 3 redundant places. [2022-11-20 09:27:49,741 INFO L231 Difference]: Finished difference. Result has 344 places, 360 transitions, 1163 flow [2022-11-20 09:27:49,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1163, PETRI_PLACES=344, PETRI_TRANSITIONS=360} [2022-11-20 09:27:49,743 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 38 predicate places. [2022-11-20 09:27:49,743 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 360 transitions, 1163 flow [2022-11-20 09:27:49,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 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) [2022-11-20 09:27:49,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:49,744 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:49,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:27:49,745 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-20 09:27:49,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:49,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1046762594, now seen corresponding path program 1 times [2022-11-20 09:27:49,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:49,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831681640] [2022-11-20 09:27:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:49,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:49,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831681640] [2022-11-20 09:27:49,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831681640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:49,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:49,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:27:49,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209775862] [2022-11-20 09:27:49,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:49,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:49,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:49,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:49,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:49,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 346 [2022-11-20 09:27:49,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 360 transitions, 1163 flow. Second operand has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 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) [2022-11-20 09:27:49,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:49,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 346 [2022-11-20 09:27:49,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand