./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/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_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/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_5104ae31-3efe-4d9e-860e-24cd829948b4/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 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --- 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 12:28:50,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:28:50,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:28:50,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:28:50,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:28:50,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:28:50,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:28:50,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:28:50,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:28:50,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:28:50,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:28:50,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:28:50,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:28:50,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:28:50,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:28:50,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:28:50,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:28:50,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:28:50,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:28:50,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:28:50,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:28:50,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:28:50,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:28:50,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:28:50,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:28:50,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:28:50,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:28:50,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:28:50,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:28:50,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:28:50,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:28:50,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:28:50,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:28:50,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:28:50,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:28:50,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:28:50,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:28:50,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:28:50,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:28:50,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:28:50,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:28:50,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:28:50,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:28:50,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:28:50,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:28:50,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:28:50,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:28:50,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:28:50,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:28:50,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:28:50,852 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:28:50,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:28:50,854 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:28:50,854 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:28:50,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:28:50,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:28:50,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:28:50,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:28:50,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:28:50,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:28:50,857 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:28:50,857 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:28:50,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:28:50,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:28:50,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:28:50,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:28:50,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:28:50,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:28:50,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:28:50,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:28:50,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:28:50,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:28:50,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:28:50,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:28:50,862 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:28:50,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:28:50,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:28:50,863 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_5104ae31-3efe-4d9e-860e-24cd829948b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2022-11-20 12:28:51,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:28:51,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:28:51,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:28:51,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:28:51,187 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:28:51,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-11-20 12:28:54,292 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:28:54,714 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:28:54,715 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-11-20 12:28:54,727 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/data/410793837/d0433ad95d21495181ef25341887f4a3/FLAG74ea13497 [2022-11-20 12:28:54,742 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/data/410793837/d0433ad95d21495181ef25341887f4a3 [2022-11-20 12:28:54,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:28:54,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:28:54,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:28:54,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:28:54,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:28:54,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:28:54" (1/1) ... [2022-11-20 12:28:54,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469b9b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:54, skipping insertion in model container [2022-11-20 12:28:54,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:28:54" (1/1) ... [2022-11-20 12:28:54,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:28:54,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:28:55,274 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_5104ae31-3efe-4d9e-860e-24cd829948b4/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-11-20 12:28:55,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:28:55,318 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:28:55,355 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_5104ae31-3efe-4d9e-860e-24cd829948b4/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-11-20 12:28:55,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:28:55,421 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:28:55,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55 WrapperNode [2022-11-20 12:28:55,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:28:55,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:28:55,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:28:55,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:28:55,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (1/1) ... [2022-11-20 12:28:55,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (1/1) ... [2022-11-20 12:28:55,490 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2022-11-20 12:28:55,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:28:55,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:28:55,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:28:55,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:28:55,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (1/1) ... [2022-11-20 12:28:55,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (1/1) ... [2022-11-20 12:28:55,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (1/1) ... [2022-11-20 12:28:55,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (1/1) ... [2022-11-20 12:28:55,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (1/1) ... [2022-11-20 12:28:55,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (1/1) ... [2022-11-20 12:28:55,521 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (1/1) ... [2022-11-20 12:28:55,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (1/1) ... [2022-11-20 12:28:55,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:28:55,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:28:55,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:28:55,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:28:55,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (1/1) ... [2022-11-20 12:28:55,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:28:55,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:55,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:28:55,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:28:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:28:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:28:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:28:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:28:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:28:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:28:55,646 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:28:55,646 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:28:55,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:28:55,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:28:55,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:28:55,649 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 12:28:55,793 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:28:55,795 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:28:56,145 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:28:56,154 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:28:56,154 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 12:28:56,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:28:56 BoogieIcfgContainer [2022-11-20 12:28:56,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:28:56,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:28:56,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:28:56,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:28:56,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:28:54" (1/3) ... [2022-11-20 12:28:56,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5d3ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:28:56, skipping insertion in model container [2022-11-20 12:28:56,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:28:55" (2/3) ... [2022-11-20 12:28:56,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5d3ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:28:56, skipping insertion in model container [2022-11-20 12:28:56,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:28:56" (3/3) ... [2022-11-20 12:28:56,168 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2022-11-20 12:28:56,177 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:28:56,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:28:56,189 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 12:28:56,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:28:56,293 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 12:28:56,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 143 transitions, 294 flow [2022-11-20 12:28:56,418 INFO L130 PetriNetUnfolder]: 17/182 cut-off events. [2022-11-20 12:28:56,419 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:28:56,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 17/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 432 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2022-11-20 12:28:56,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 143 transitions, 294 flow [2022-11-20 12:28:56,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 140 transitions, 288 flow [2022-11-20 12:28:56,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:28:56,452 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;@5c98a5cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:28:56,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 12:28:56,503 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-20 12:28:56,504 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:28:56,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:56,505 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 12:28:56,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 12:28:56,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:56,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1650474858, now seen corresponding path program 1 times [2022-11-20 12:28:56,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:56,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062291390] [2022-11-20 12:28:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:56,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:57,079 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 12:28:57,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:57,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062291390] [2022-11-20 12:28:57,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062291390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:57,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:57,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:57,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65384966] [2022-11-20 12:28:57,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:57,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:28:57,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:57,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:28:57,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:28:57,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 143 [2022-11-20 12:28:57,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 140 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 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 12:28:57,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:57,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 143 [2022-11-20 12:28:57,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:57,280 INFO L130 PetriNetUnfolder]: 0/130 cut-off events. [2022-11-20 12:28:57,281 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-20 12:28:57,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 130 events. 0/130 cut-off events. For 12/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 31/153 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-20 12:28:57,283 INFO L137 encePairwiseOnDemand]: 125/143 looper letters, 10 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2022-11-20 12:28:57,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 128 transitions, 292 flow [2022-11-20 12:28:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:28:57,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:28:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 632 transitions. [2022-11-20 12:28:57,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8839160839160839 [2022-11-20 12:28:57,302 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 632 transitions. [2022-11-20 12:28:57,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 632 transitions. [2022-11-20 12:28:57,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:57,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 632 transitions. [2022-11-20 12:28:57,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 12:28:57,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 12:28:57,323 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 12:28:57,325 INFO L175 Difference]: Start difference. First operand has 132 places, 140 transitions, 288 flow. Second operand 5 states and 632 transitions. [2022-11-20 12:28:57,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 128 transitions, 292 flow [2022-11-20 12:28:57,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:28:57,334 INFO L231 Difference]: Finished difference. Result has 134 places, 126 transitions, 272 flow [2022-11-20 12:28:57,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=134, PETRI_TRANSITIONS=126} [2022-11-20 12:28:57,340 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 2 predicate places. [2022-11-20 12:28:57,340 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 126 transitions, 272 flow [2022-11-20 12:28:57,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 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 12:28:57,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:57,341 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 12:28:57,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:28:57,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 12:28:57,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:57,343 INFO L85 PathProgramCache]: Analyzing trace with hash -771442967, now seen corresponding path program 1 times [2022-11-20 12:28:57,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:57,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667636204] [2022-11-20 12:28:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:57,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:28:57,378 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:28:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:28:57,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:28:57,451 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:28:57,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-20 12:28:57,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-20 12:28:57,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-20 12:28:57,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-20 12:28:57,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-20 12:28:57,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-20 12:28:57,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-20 12:28:57,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-20 12:28:57,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-20 12:28:57,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-20 12:28:57,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-20 12:28:57,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-20 12:28:57,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-20 12:28:57,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:28:57,460 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 12:28:57,463 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:28:57,464 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 12:28:57,534 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:28:57,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 192 transitions, 402 flow [2022-11-20 12:28:57,626 INFO L130 PetriNetUnfolder]: 31/307 cut-off events. [2022-11-20 12:28:57,626 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:28:57,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 31/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 956 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-11-20 12:28:57,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 192 transitions, 402 flow [2022-11-20 12:28:57,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 192 transitions, 402 flow [2022-11-20 12:28:57,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:28:57,637 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;@5c98a5cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:28:57,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 12:28:57,649 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-20 12:28:57,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:28:57,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:57,650 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 12:28:57,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:28:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash -294995943, now seen corresponding path program 1 times [2022-11-20 12:28:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:57,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392918706] [2022-11-20 12:28:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:57,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:57,858 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 12:28:57,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:57,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392918706] [2022-11-20 12:28:57,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392918706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:57,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:57,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:57,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351475977] [2022-11-20 12:28:57,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:57,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:28:57,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:57,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:28:57,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:28:57,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 192 [2022-11-20 12:28:57,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 192 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 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 12:28:57,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:57,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 192 [2022-11-20 12:28:57,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:58,000 INFO L130 PetriNetUnfolder]: 2/254 cut-off events. [2022-11-20 12:28:58,001 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-20 12:28:58,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 254 events. 2/254 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 599 event pairs, 0 based on Foata normal form. 77/307 useless extension candidates. Maximal degree in co-relation 160. Up to 21 conditions per place. [2022-11-20 12:28:58,004 INFO L137 encePairwiseOnDemand]: 168/192 looper letters, 19 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2022-11-20 12:28:58,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 181 transitions, 426 flow [2022-11-20 12:28:58,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:28:58,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:28:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 852 transitions. [2022-11-20 12:28:58,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8875 [2022-11-20 12:28:58,008 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 852 transitions. [2022-11-20 12:28:58,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 852 transitions. [2022-11-20 12:28:58,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:58,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 852 transitions. [2022-11-20 12:28:58,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.4) internal successors, (852), 5 states have internal predecessors, (852), 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 12:28:58,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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 12:28:58,017 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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 12:28:58,017 INFO L175 Difference]: Start difference. First operand has 178 places, 192 transitions, 402 flow. Second operand 5 states and 852 transitions. [2022-11-20 12:28:58,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 181 transitions, 426 flow [2022-11-20 12:28:58,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 181 transitions, 426 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:28:58,025 INFO L231 Difference]: Finished difference. Result has 184 places, 177 transitions, 398 flow [2022-11-20 12:28:58,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=184, PETRI_TRANSITIONS=177} [2022-11-20 12:28:58,026 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 6 predicate places. [2022-11-20 12:28:58,027 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 177 transitions, 398 flow [2022-11-20 12:28:58,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 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 12:28:58,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:58,028 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 12:28:58,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:28:58,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:28:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1271269501, now seen corresponding path program 1 times [2022-11-20 12:28:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:58,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889879260] [2022-11-20 12:28:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:58,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:58,179 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 12:28:58,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:58,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889879260] [2022-11-20 12:28:58,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889879260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:58,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:58,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:58,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065419360] [2022-11-20 12:28:58,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:58,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:28:58,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:58,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:28:58,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:28:58,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 192 [2022-11-20 12:28:58,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 177 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 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 12:28:58,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:58,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 192 [2022-11-20 12:28:58,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:58,292 INFO L130 PetriNetUnfolder]: 2/253 cut-off events. [2022-11-20 12:28:58,293 INFO L131 PetriNetUnfolder]: For 22/52 co-relation queries the response was YES. [2022-11-20 12:28:58,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 253 events. 2/253 cut-off events. For 22/52 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 594 event pairs, 0 based on Foata normal form. 7/240 useless extension candidates. Maximal degree in co-relation 236. Up to 10 conditions per place. [2022-11-20 12:28:58,295 INFO L137 encePairwiseOnDemand]: 186/192 looper letters, 11 selfloop transitions, 8 changer transitions 0/177 dead transitions. [2022-11-20 12:28:58,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 177 transitions, 434 flow [2022-11-20 12:28:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:28:58,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:28:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 807 transitions. [2022-11-20 12:28:58,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.840625 [2022-11-20 12:28:58,299 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 807 transitions. [2022-11-20 12:28:58,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 807 transitions. [2022-11-20 12:28:58,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:58,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 807 transitions. [2022-11-20 12:28:58,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 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 12:28:58,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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 12:28:58,306 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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 12:28:58,306 INFO L175 Difference]: Start difference. First operand has 184 places, 177 transitions, 398 flow. Second operand 5 states and 807 transitions. [2022-11-20 12:28:58,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 177 transitions, 434 flow [2022-11-20 12:28:58,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 177 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:28:58,311 INFO L231 Difference]: Finished difference. Result has 187 places, 177 transitions, 416 flow [2022-11-20 12:28:58,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=187, PETRI_TRANSITIONS=177} [2022-11-20 12:28:58,313 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 9 predicate places. [2022-11-20 12:28:58,313 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 177 transitions, 416 flow [2022-11-20 12:28:58,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 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 12:28:58,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:58,314 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 12:28:58,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:28:58,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:28:58,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:58,315 INFO L85 PathProgramCache]: Analyzing trace with hash 754649291, now seen corresponding path program 1 times [2022-11-20 12:28:58,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:58,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976508771] [2022-11-20 12:28:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:58,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:58,447 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 12:28:58,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:58,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976508771] [2022-11-20 12:28:58,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976508771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:58,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919746124] [2022-11-20 12:28:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:58,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:58,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:58,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:58,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:28:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:58,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:28:58,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:58,728 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 12:28:58,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:28:58,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919746124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:58,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:28:58,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:28:58,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485066073] [2022-11-20 12:28:58,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:58,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:28:58,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:58,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:28:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:28:58,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 192 [2022-11-20 12:28:58,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 177 transitions, 416 flow. Second operand has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 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 12:28:58,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:58,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 192 [2022-11-20 12:28:58,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:58,898 INFO L130 PetriNetUnfolder]: 2/252 cut-off events. [2022-11-20 12:28:58,898 INFO L131 PetriNetUnfolder]: For 31/59 co-relation queries the response was YES. [2022-11-20 12:28:58,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 252 events. 2/252 cut-off events. For 31/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 587 event pairs, 0 based on Foata normal form. 6/238 useless extension candidates. Maximal degree in co-relation 176. Up to 13 conditions per place. [2022-11-20 12:28:58,901 INFO L137 encePairwiseOnDemand]: 187/192 looper letters, 15 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2022-11-20 12:28:58,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 179 transitions, 460 flow [2022-11-20 12:28:58,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:28:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:28:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1128 transitions. [2022-11-20 12:28:58,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-11-20 12:28:58,904 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1128 transitions. [2022-11-20 12:28:58,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1128 transitions. [2022-11-20 12:28:58,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:58,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1128 transitions. [2022-11-20 12:28:58,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 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 12:28:58,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 192.0) internal successors, (1536), 8 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 12:28:58,913 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 192.0) internal successors, (1536), 8 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 12:28:58,913 INFO L175 Difference]: Start difference. First operand has 187 places, 177 transitions, 416 flow. Second operand 7 states and 1128 transitions. [2022-11-20 12:28:58,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 179 transitions, 460 flow [2022-11-20 12:28:58,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 179 transitions, 448 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:28:58,921 INFO L231 Difference]: Finished difference. Result has 189 places, 176 transitions, 412 flow [2022-11-20 12:28:58,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=189, PETRI_TRANSITIONS=176} [2022-11-20 12:28:58,923 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 11 predicate places. [2022-11-20 12:28:58,923 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 176 transitions, 412 flow [2022-11-20 12:28:58,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 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 12:28:58,924 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:58,924 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] [2022-11-20 12:28:58,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:59,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:59,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:28:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:59,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1593595971, now seen corresponding path program 1 times [2022-11-20 12:28:59,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:59,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617419754] [2022-11-20 12:28:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:59,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:59,321 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 12:28:59,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:59,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617419754] [2022-11-20 12:28:59,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617419754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:59,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:59,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:59,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469857853] [2022-11-20 12:28:59,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:59,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:28:59,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:59,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:28:59,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:28:59,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 192 [2022-11-20 12:28:59,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 176 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 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 12:28:59,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:28:59,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 192 [2022-11-20 12:28:59,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:28:59,685 INFO L130 PetriNetUnfolder]: 186/1196 cut-off events. [2022-11-20 12:28:59,685 INFO L131 PetriNetUnfolder]: For 111/111 co-relation queries the response was YES. [2022-11-20 12:28:59,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 1196 events. 186/1196 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8287 event pairs, 49 based on Foata normal form. 0/1067 useless extension candidates. Maximal degree in co-relation 1357. Up to 224 conditions per place. [2022-11-20 12:28:59,699 INFO L137 encePairwiseOnDemand]: 185/192 looper letters, 38 selfloop transitions, 6 changer transitions 0/200 dead transitions. [2022-11-20 12:28:59,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 200 transitions, 566 flow [2022-11-20 12:28:59,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:28:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:28:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 818 transitions. [2022-11-20 12:28:59,703 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8520833333333333 [2022-11-20 12:28:59,703 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 818 transitions. [2022-11-20 12:28:59,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 818 transitions. [2022-11-20 12:28:59,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:28:59,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 818 transitions. [2022-11-20 12:28:59,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.6) internal successors, (818), 5 states have internal predecessors, (818), 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 12:28:59,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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 12:28:59,708 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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 12:28:59,709 INFO L175 Difference]: Start difference. First operand has 189 places, 176 transitions, 412 flow. Second operand 5 states and 818 transitions. [2022-11-20 12:28:59,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 200 transitions, 566 flow [2022-11-20 12:28:59,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 200 transitions, 555 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:28:59,717 INFO L231 Difference]: Finished difference. Result has 191 places, 181 transitions, 450 flow [2022-11-20 12:28:59,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=191, PETRI_TRANSITIONS=181} [2022-11-20 12:28:59,721 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 13 predicate places. [2022-11-20 12:28:59,722 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 181 transitions, 450 flow [2022-11-20 12:28:59,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 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 12:28:59,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:28:59,722 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 12:28:59,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:28:59,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 12:28:59,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash 717364523, now seen corresponding path program 1 times [2022-11-20 12:28:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:59,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794581577] [2022-11-20 12:28:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:59,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:28:59,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:28:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:28:59,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:28:59,821 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:28:59,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-20 12:28:59,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-20 12:28:59,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-20 12:28:59,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-20 12:28:59,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-20 12:28:59,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-20 12:28:59,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-20 12:28:59,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-20 12:28:59,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-20 12:28:59,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-20 12:28:59,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-20 12:28:59,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-20 12:28:59,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-20 12:28:59,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-20 12:28:59,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-20 12:28:59,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-20 12:28:59,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-20 12:28:59,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:28:59,837 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 12:28:59,838 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:28:59,838 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 12:28:59,892 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:28:59,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 241 transitions, 512 flow [2022-11-20 12:28:59,980 INFO L130 PetriNetUnfolder]: 50/473 cut-off events. [2022-11-20 12:28:59,980 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 12:28:59,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 473 events. 50/473 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1741 event pairs, 1 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 315. Up to 16 conditions per place. [2022-11-20 12:28:59,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 241 transitions, 512 flow [2022-11-20 12:28:59,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 241 transitions, 512 flow [2022-11-20 12:28:59,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:28:59,998 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;@5c98a5cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:28:59,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-20 12:29:00,004 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-20 12:29:00,005 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:29:00,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:00,005 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 12:29:00,005 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 12:29:00,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:00,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1121899944, now seen corresponding path program 1 times [2022-11-20 12:29:00,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:00,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494085802] [2022-11-20 12:29:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:00,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:00,089 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 12:29:00,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:00,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494085802] [2022-11-20 12:29:00,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494085802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:00,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:00,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:29:00,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718698213] [2022-11-20 12:29:00,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:00,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:00,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:00,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:00,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 241 [2022-11-20 12:29:00,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 241 transitions, 512 flow. Second operand has 4 states, 4 states have (on average 200.75) internal successors, (803), 4 states have internal predecessors, (803), 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 12:29:00,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:00,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 241 [2022-11-20 12:29:00,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:29:00,235 INFO L130 PetriNetUnfolder]: 7/405 cut-off events. [2022-11-20 12:29:00,236 INFO L131 PetriNetUnfolder]: For 54/131 co-relation queries the response was YES. [2022-11-20 12:29:00,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 405 events. 7/405 cut-off events. For 54/131 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1297 event pairs, 1 based on Foata normal form. 205/566 useless extension candidates. Maximal degree in co-relation 294. Up to 40 conditions per place. [2022-11-20 12:29:00,241 INFO L137 encePairwiseOnDemand]: 211/241 looper letters, 21 selfloop transitions, 4 changer transitions 0/224 dead transitions. [2022-11-20 12:29:00,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 224 transitions, 528 flow [2022-11-20 12:29:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:29:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1065 transitions. [2022-11-20 12:29:00,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8838174273858921 [2022-11-20 12:29:00,245 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1065 transitions. [2022-11-20 12:29:00,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1065 transitions. [2022-11-20 12:29:00,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:29:00,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1065 transitions. [2022-11-20 12:29:00,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 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 12:29:00,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 12:29:00,251 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 12:29:00,252 INFO L175 Difference]: Start difference. First operand has 222 places, 241 transitions, 512 flow. Second operand 5 states and 1065 transitions. [2022-11-20 12:29:00,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 224 transitions, 528 flow [2022-11-20 12:29:00,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 224 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:29:00,257 INFO L231 Difference]: Finished difference. Result has 228 places, 220 transitions, 496 flow [2022-11-20 12:29:00,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=228, PETRI_TRANSITIONS=220} [2022-11-20 12:29:00,259 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 6 predicate places. [2022-11-20 12:29:00,259 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 220 transitions, 496 flow [2022-11-20 12:29:00,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.75) internal successors, (803), 4 states have internal predecessors, (803), 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 12:29:00,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:00,260 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 12:29:00,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:29:00,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:29:00,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash -544942853, now seen corresponding path program 1 times [2022-11-20 12:29:00,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:00,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235930434] [2022-11-20 12:29:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:00,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:00,356 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 12:29:00,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:00,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235930434] [2022-11-20 12:29:00,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235930434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:00,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:00,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:29:00,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921944429] [2022-11-20 12:29:00,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:00,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:00,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:00,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:00,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:00,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 241 [2022-11-20 12:29:00,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 220 transitions, 496 flow. Second operand has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 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 12:29:00,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:00,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 241 [2022-11-20 12:29:00,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:29:00,519 INFO L130 PetriNetUnfolder]: 7/403 cut-off events. [2022-11-20 12:29:00,520 INFO L131 PetriNetUnfolder]: For 62/133 co-relation queries the response was YES. [2022-11-20 12:29:00,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 403 events. 7/403 cut-off events. For 62/133 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1283 event pairs, 1 based on Foata normal form. 11/377 useless extension candidates. Maximal degree in co-relation 422. Up to 20 conditions per place. [2022-11-20 12:29:00,526 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 13 selfloop transitions, 8 changer transitions 0/220 dead transitions. [2022-11-20 12:29:00,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 220 transitions, 536 flow [2022-11-20 12:29:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:29:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1014 transitions. [2022-11-20 12:29:00,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84149377593361 [2022-11-20 12:29:00,530 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1014 transitions. [2022-11-20 12:29:00,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1014 transitions. [2022-11-20 12:29:00,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:29:00,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1014 transitions. [2022-11-20 12:29:00,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.8) internal successors, (1014), 5 states have internal predecessors, (1014), 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 12:29:00,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 12:29:00,541 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 12:29:00,541 INFO L175 Difference]: Start difference. First operand has 228 places, 220 transitions, 496 flow. Second operand 5 states and 1014 transitions. [2022-11-20 12:29:00,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 220 transitions, 536 flow [2022-11-20 12:29:00,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 220 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:29:00,546 INFO L231 Difference]: Finished difference. Result has 231 places, 220 transitions, 514 flow [2022-11-20 12:29:00,547 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=514, PETRI_PLACES=231, PETRI_TRANSITIONS=220} [2022-11-20 12:29:00,549 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 9 predicate places. [2022-11-20 12:29:00,549 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 220 transitions, 514 flow [2022-11-20 12:29:00,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 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 12:29:00,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:00,552 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 12:29:00,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:29:00,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:29:00,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:00,553 INFO L85 PathProgramCache]: Analyzing trace with hash 286641406, now seen corresponding path program 1 times [2022-11-20 12:29:00,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:00,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335403610] [2022-11-20 12:29:00,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:00,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:00,664 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 12:29:00,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:00,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335403610] [2022-11-20 12:29:00,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335403610] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:00,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960201894] [2022-11-20 12:29:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:00,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:00,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:29:00,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:29:00,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:29:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:00,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:29:00,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:29:00,852 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 12:29:00,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:29:00,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960201894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:00,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:29:00,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:29:00,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889728633] [2022-11-20 12:29:00,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:00,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:29:00,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:00,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:29:00,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:29:00,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 241 [2022-11-20 12:29:00,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 220 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 201.66666666666666) internal successors, (1210), 6 states have internal predecessors, (1210), 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 12:29:00,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:00,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 241 [2022-11-20 12:29:00,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:29:01,014 INFO L130 PetriNetUnfolder]: 7/401 cut-off events. [2022-11-20 12:29:01,014 INFO L131 PetriNetUnfolder]: For 74/139 co-relation queries the response was YES. [2022-11-20 12:29:01,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 401 events. 7/401 cut-off events. For 74/139 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1275 event pairs, 1 based on Foata normal form. 8/372 useless extension candidates. Maximal degree in co-relation 315. Up to 26 conditions per place. [2022-11-20 12:29:01,020 INFO L137 encePairwiseOnDemand]: 236/241 looper letters, 17 selfloop transitions, 6 changer transitions 0/222 dead transitions. [2022-11-20 12:29:01,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 222 transitions, 562 flow [2022-11-20 12:29:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:29:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:29:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1417 transitions. [2022-11-20 12:29:01,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8399525785417902 [2022-11-20 12:29:01,024 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1417 transitions. [2022-11-20 12:29:01,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1417 transitions. [2022-11-20 12:29:01,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:29:01,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1417 transitions. [2022-11-20 12:29:01,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.42857142857142) internal successors, (1417), 7 states have internal predecessors, (1417), 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 12:29:01,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 12:29:01,032 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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 12:29:01,033 INFO L175 Difference]: Start difference. First operand has 231 places, 220 transitions, 514 flow. Second operand 7 states and 1417 transitions. [2022-11-20 12:29:01,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 222 transitions, 562 flow [2022-11-20 12:29:01,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 222 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:29:01,038 INFO L231 Difference]: Finished difference. Result has 233 places, 219 transitions, 510 flow [2022-11-20 12:29:01,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=510, PETRI_PLACES=233, PETRI_TRANSITIONS=219} [2022-11-20 12:29:01,039 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 11 predicate places. [2022-11-20 12:29:01,039 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 219 transitions, 510 flow [2022-11-20 12:29:01,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 201.66666666666666) internal successors, (1210), 6 states have internal predecessors, (1210), 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 12:29:01,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:01,040 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] [2022-11-20 12:29:01,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:29:01,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:29:01,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:29:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash 54282525, now seen corresponding path program 1 times [2022-11-20 12:29:01,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:01,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558580186] [2022-11-20 12:29:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:01,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:01,385 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 12:29:01,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:01,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558580186] [2022-11-20 12:29:01,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558580186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:01,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:01,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:29:01,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515468537] [2022-11-20 12:29:01,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:01,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:01,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:01,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:01,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:01,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-20 12:29:01,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 219 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 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 12:29:01,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:01,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-20 12:29:01,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:29:03,635 INFO L130 PetriNetUnfolder]: 2004/8879 cut-off events. [2022-11-20 12:29:03,635 INFO L131 PetriNetUnfolder]: For 1187/1187 co-relation queries the response was YES. [2022-11-20 12:29:03,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12527 conditions, 8879 events. 2004/8879 cut-off events. For 1187/1187 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 97697 event pairs, 691 based on Foata normal form. 0/7836 useless extension candidates. Maximal degree in co-relation 8148. Up to 2180 conditions per place. [2022-11-20 12:29:03,772 INFO L137 encePairwiseOnDemand]: 233/241 looper letters, 54 selfloop transitions, 8 changer transitions 0/255 dead transitions. [2022-11-20 12:29:03,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 255 transitions, 748 flow [2022-11-20 12:29:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:29:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1021 transitions. [2022-11-20 12:29:03,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8473029045643153 [2022-11-20 12:29:03,777 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1021 transitions. [2022-11-20 12:29:03,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1021 transitions. [2022-11-20 12:29:03,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:29:03,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1021 transitions. [2022-11-20 12:29:03,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 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 12:29:03,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 12:29:03,786 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 12:29:03,786 INFO L175 Difference]: Start difference. First operand has 233 places, 219 transitions, 510 flow. Second operand 5 states and 1021 transitions. [2022-11-20 12:29:03,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 255 transitions, 748 flow [2022-11-20 12:29:03,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 255 transitions, 737 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:29:03,793 INFO L231 Difference]: Finished difference. Result has 235 places, 226 transitions, 563 flow [2022-11-20 12:29:03,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=563, PETRI_PLACES=235, PETRI_TRANSITIONS=226} [2022-11-20 12:29:03,795 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 13 predicate places. [2022-11-20 12:29:03,795 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 226 transitions, 563 flow [2022-11-20 12:29:03,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 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 12:29:03,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:03,796 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 12:29:03,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:29:03,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:29:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:03,797 INFO L85 PathProgramCache]: Analyzing trace with hash -824261999, now seen corresponding path program 1 times [2022-11-20 12:29:03,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:03,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431289557] [2022-11-20 12:29:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:03,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:03,942 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 12:29:03,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:03,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431289557] [2022-11-20 12:29:03,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431289557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:03,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:03,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:29:03,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127560190] [2022-11-20 12:29:03,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:03,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:29:03,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:03,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:29:03,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:29:03,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 241 [2022-11-20 12:29:03,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 226 transitions, 563 flow. Second operand has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 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 12:29:03,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:03,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 241 [2022-11-20 12:29:03,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:29:07,921 INFO L130 PetriNetUnfolder]: 4151/16112 cut-off events. [2022-11-20 12:29:07,921 INFO L131 PetriNetUnfolder]: For 4191/4195 co-relation queries the response was YES. [2022-11-20 12:29:08,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25497 conditions, 16112 events. 4151/16112 cut-off events. For 4191/4195 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 194655 event pairs, 1022 based on Foata normal form. 4/14324 useless extension candidates. Maximal degree in co-relation 17984. Up to 2912 conditions per place. [2022-11-20 12:29:08,125 INFO L137 encePairwiseOnDemand]: 228/241 looper letters, 102 selfloop transitions, 27 changer transitions 0/317 dead transitions. [2022-11-20 12:29:08,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 317 transitions, 1150 flow [2022-11-20 12:29:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:29:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:29:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1805 transitions. [2022-11-20 12:29:08,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8321807284462887 [2022-11-20 12:29:08,130 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1805 transitions. [2022-11-20 12:29:08,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1805 transitions. [2022-11-20 12:29:08,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:29:08,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1805 transitions. [2022-11-20 12:29:08,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 200.55555555555554) internal successors, (1805), 9 states have internal predecessors, (1805), 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 12:29:08,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 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 12:29:08,141 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 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 12:29:08,141 INFO L175 Difference]: Start difference. First operand has 235 places, 226 transitions, 563 flow. Second operand 9 states and 1805 transitions. [2022-11-20 12:29:08,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 317 transitions, 1150 flow [2022-11-20 12:29:08,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 317 transitions, 1145 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:29:08,153 INFO L231 Difference]: Finished difference. Result has 248 places, 245 transitions, 763 flow [2022-11-20 12:29:08,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=763, PETRI_PLACES=248, PETRI_TRANSITIONS=245} [2022-11-20 12:29:08,155 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 26 predicate places. [2022-11-20 12:29:08,155 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 245 transitions, 763 flow [2022-11-20 12:29:08,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 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 12:29:08,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:08,156 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 12:29:08,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:29:08,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:29:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:08,157 INFO L85 PathProgramCache]: Analyzing trace with hash 217682741, now seen corresponding path program 1 times [2022-11-20 12:29:08,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:08,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490220232] [2022-11-20 12:29:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:08,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:08,297 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 12:29:08,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:08,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490220232] [2022-11-20 12:29:08,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490220232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:08,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:08,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:29:08,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683713634] [2022-11-20 12:29:08,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:08,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:29:08,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:08,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:29:08,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:29:08,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 241 [2022-11-20 12:29:08,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 245 transitions, 763 flow. Second operand has 6 states, 6 states have (on average 187.83333333333334) internal successors, (1127), 6 states have internal predecessors, (1127), 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 12:29:08,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:08,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 241 [2022-11-20 12:29:08,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:29:11,909 INFO L130 PetriNetUnfolder]: 3946/14917 cut-off events. [2022-11-20 12:29:11,909 INFO L131 PetriNetUnfolder]: For 12851/13063 co-relation queries the response was YES. [2022-11-20 12:29:11,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28844 conditions, 14917 events. 3946/14917 cut-off events. For 12851/13063 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 177137 event pairs, 1054 based on Foata normal form. 254/13767 useless extension candidates. Maximal degree in co-relation 20941. Up to 3161 conditions per place. [2022-11-20 12:29:12,099 INFO L137 encePairwiseOnDemand]: 228/241 looper letters, 109 selfloop transitions, 27 changer transitions 0/324 dead transitions. [2022-11-20 12:29:12,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 324 transitions, 1414 flow [2022-11-20 12:29:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:29:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:29:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1803 transitions. [2022-11-20 12:29:12,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8312586445366529 [2022-11-20 12:29:12,105 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1803 transitions. [2022-11-20 12:29:12,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1803 transitions. [2022-11-20 12:29:12,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:29:12,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1803 transitions. [2022-11-20 12:29:12,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 200.33333333333334) internal successors, (1803), 9 states have internal predecessors, (1803), 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 12:29:12,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 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 12:29:12,116 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 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 12:29:12,116 INFO L175 Difference]: Start difference. First operand has 248 places, 245 transitions, 763 flow. Second operand 9 states and 1803 transitions. [2022-11-20 12:29:12,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 324 transitions, 1414 flow [2022-11-20 12:29:12,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 324 transitions, 1347 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-20 12:29:12,163 INFO L231 Difference]: Finished difference. Result has 254 places, 253 transitions, 844 flow [2022-11-20 12:29:12,164 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=844, PETRI_PLACES=254, PETRI_TRANSITIONS=253} [2022-11-20 12:29:12,164 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 32 predicate places. [2022-11-20 12:29:12,164 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 253 transitions, 844 flow [2022-11-20 12:29:12,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.83333333333334) internal successors, (1127), 6 states have internal predecessors, (1127), 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 12:29:12,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:12,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:12,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:29:12,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:29:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:12,167 INFO L85 PathProgramCache]: Analyzing trace with hash 857957964, now seen corresponding path program 1 times [2022-11-20 12:29:12,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:12,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375831102] [2022-11-20 12:29:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:12,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:29:12,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:12,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375831102] [2022-11-20 12:29:12,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375831102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:12,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:12,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:29:12,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718717577] [2022-11-20 12:29:12,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:12,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:12,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:12,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:12,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:12,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-20 12:29:12,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 253 transitions, 844 flow. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 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 12:29:12,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:12,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-20 12:29:12,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:29:16,527 INFO L130 PetriNetUnfolder]: 4693/20532 cut-off events. [2022-11-20 12:29:16,527 INFO L131 PetriNetUnfolder]: For 17518/17840 co-relation queries the response was YES. [2022-11-20 12:29:16,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39346 conditions, 20532 events. 4693/20532 cut-off events. For 17518/17840 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 266508 event pairs, 1655 based on Foata normal form. 180/18712 useless extension candidates. Maximal degree in co-relation 29125. Up to 5174 conditions per place. [2022-11-20 12:29:16,856 INFO L137 encePairwiseOnDemand]: 233/241 looper letters, 95 selfloop transitions, 11 changer transitions 0/303 dead transitions. [2022-11-20 12:29:16,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 303 transitions, 1366 flow [2022-11-20 12:29:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:29:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1019 transitions. [2022-11-20 12:29:16,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.845643153526971 [2022-11-20 12:29:16,861 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1019 transitions. [2022-11-20 12:29:16,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1019 transitions. [2022-11-20 12:29:16,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:29:16,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1019 transitions. [2022-11-20 12:29:16,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.8) internal successors, (1019), 5 states have internal predecessors, (1019), 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 12:29:16,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 12:29:16,871 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 12:29:16,871 INFO L175 Difference]: Start difference. First operand has 254 places, 253 transitions, 844 flow. Second operand 5 states and 1019 transitions. [2022-11-20 12:29:16,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 303 transitions, 1366 flow [2022-11-20 12:29:16,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 303 transitions, 1324 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:29:16,995 INFO L231 Difference]: Finished difference. Result has 257 places, 258 transitions, 894 flow [2022-11-20 12:29:16,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=894, PETRI_PLACES=257, PETRI_TRANSITIONS=258} [2022-11-20 12:29:16,996 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 35 predicate places. [2022-11-20 12:29:16,997 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 258 transitions, 894 flow [2022-11-20 12:29:16,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 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 12:29:16,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:16,998 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:16,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:29:16,998 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 12:29:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:16,999 INFO L85 PathProgramCache]: Analyzing trace with hash 471659180, now seen corresponding path program 1 times [2022-11-20 12:29:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:17,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264242733] [2022-11-20 12:29:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:29:17,038 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:29:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:29:17,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:29:17,092 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:29:17,092 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-20 12:29:17,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-20 12:29:17,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-20 12:29:17,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-20 12:29:17,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-20 12:29:17,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-20 12:29:17,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-20 12:29:17,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-20 12:29:17,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-20 12:29:17,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-20 12:29:17,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-20 12:29:17,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-20 12:29:17,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-20 12:29:17,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-20 12:29:17,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-20 12:29:17,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-20 12:29:17,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-20 12:29:17,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-20 12:29:17,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-20 12:29:17,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-20 12:29:17,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-20 12:29:17,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:29:17,098 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:17,100 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:29:17,100 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 12:29:17,163 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 12:29:17,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 290 transitions, 624 flow [2022-11-20 12:29:17,356 INFO L130 PetriNetUnfolder]: 81/723 cut-off events. [2022-11-20 12:29:17,357 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-20 12:29:17,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 723 events. 81/723 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3075 event pairs, 6 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 493. Up to 32 conditions per place. [2022-11-20 12:29:17,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 290 transitions, 624 flow [2022-11-20 12:29:17,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 290 transitions, 624 flow [2022-11-20 12:29:17,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:29:17,386 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;@5c98a5cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:29:17,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-20 12:29:17,394 INFO L130 PetriNetUnfolder]: 1/60 cut-off events. [2022-11-20 12:29:17,394 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:29:17,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:17,395 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 12:29:17,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:29:17,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:17,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1606195223, now seen corresponding path program 1 times [2022-11-20 12:29:17,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:17,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521829034] [2022-11-20 12:29:17,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:17,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:17,476 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 12:29:17,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:17,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521829034] [2022-11-20 12:29:17,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521829034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:17,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:17,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:29:17,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161326438] [2022-11-20 12:29:17,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:17,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:17,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:17,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:17,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 290 [2022-11-20 12:29:17,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 290 transitions, 624 flow. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 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 12:29:17,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:17,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 290 [2022-11-20 12:29:17,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:29:17,849 INFO L130 PetriNetUnfolder]: 20/636 cut-off events. [2022-11-20 12:29:17,849 INFO L131 PetriNetUnfolder]: For 178/429 co-relation queries the response was YES. [2022-11-20 12:29:17,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 636 events. 20/636 cut-off events. For 178/429 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2676 event pairs, 6 based on Foata normal form. 475/1035 useless extension candidates. Maximal degree in co-relation 478. Up to 71 conditions per place. [2022-11-20 12:29:17,861 INFO L137 encePairwiseOnDemand]: 254/290 looper letters, 23 selfloop transitions, 4 changer transitions 0/267 dead transitions. [2022-11-20 12:29:17,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 267 transitions, 632 flow [2022-11-20 12:29:17,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:29:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1278 transitions. [2022-11-20 12:29:17,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8813793103448276 [2022-11-20 12:29:17,867 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1278 transitions. [2022-11-20 12:29:17,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1278 transitions. [2022-11-20 12:29:17,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:29:17,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1278 transitions. [2022-11-20 12:29:17,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.6) internal successors, (1278), 5 states have internal predecessors, (1278), 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 12:29:17,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:29:17,877 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:29:17,877 INFO L175 Difference]: Start difference. First operand has 266 places, 290 transitions, 624 flow. Second operand 5 states and 1278 transitions. [2022-11-20 12:29:17,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 267 transitions, 632 flow [2022-11-20 12:29:17,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 267 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:29:17,885 INFO L231 Difference]: Finished difference. Result has 272 places, 263 transitions, 596 flow [2022-11-20 12:29:17,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=596, PETRI_PLACES=272, PETRI_TRANSITIONS=263} [2022-11-20 12:29:17,887 INFO L288 CegarLoopForPetriNet]: 266 programPoint places, 6 predicate places. [2022-11-20 12:29:17,887 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 263 transitions, 596 flow [2022-11-20 12:29:17,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 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 12:29:17,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:17,888 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 12:29:17,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:29:17,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:29:17,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:17,889 INFO L85 PathProgramCache]: Analyzing trace with hash -42097895, now seen corresponding path program 1 times [2022-11-20 12:29:17,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:17,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163550962] [2022-11-20 12:29:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:17,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:18,042 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 12:29:18,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:18,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163550962] [2022-11-20 12:29:18,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163550962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:18,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:18,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:29:18,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743757461] [2022-11-20 12:29:18,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:18,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:18,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:18,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 290 [2022-11-20 12:29:18,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 263 transitions, 596 flow. Second operand has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 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 12:29:18,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:18,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 290 [2022-11-20 12:29:18,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:29:18,237 INFO L130 PetriNetUnfolder]: 20/633 cut-off events. [2022-11-20 12:29:18,237 INFO L131 PetriNetUnfolder]: For 182/411 co-relation queries the response was YES. [2022-11-20 12:29:18,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 791 conditions, 633 events. 20/633 cut-off events. For 182/411 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2660 event pairs, 6 based on Foata normal form. 15/582 useless extension candidates. Maximal degree in co-relation 713. Up to 42 conditions per place. [2022-11-20 12:29:18,248 INFO L137 encePairwiseOnDemand]: 284/290 looper letters, 15 selfloop transitions, 8 changer transitions 0/263 dead transitions. [2022-11-20 12:29:18,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 263 transitions, 640 flow [2022-11-20 12:29:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:29:18,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1221 transitions. [2022-11-20 12:29:18,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8420689655172414 [2022-11-20 12:29:18,254 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1221 transitions. [2022-11-20 12:29:18,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1221 transitions. [2022-11-20 12:29:18,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:29:18,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1221 transitions. [2022-11-20 12:29:18,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.2) internal successors, (1221), 5 states have internal predecessors, (1221), 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 12:29:18,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:29:18,261 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:29:18,261 INFO L175 Difference]: Start difference. First operand has 272 places, 263 transitions, 596 flow. Second operand 5 states and 1221 transitions. [2022-11-20 12:29:18,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 263 transitions, 640 flow [2022-11-20 12:29:18,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 263 transitions, 638 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:29:18,267 INFO L231 Difference]: Finished difference. Result has 275 places, 263 transitions, 614 flow [2022-11-20 12:29:18,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=614, PETRI_PLACES=275, PETRI_TRANSITIONS=263} [2022-11-20 12:29:18,268 INFO L288 CegarLoopForPetriNet]: 266 programPoint places, 9 predicate places. [2022-11-20 12:29:18,268 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 263 transitions, 614 flow [2022-11-20 12:29:18,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 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 12:29:18,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:18,269 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 12:29:18,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:29:18,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:29:18,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:18,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1305033790, now seen corresponding path program 1 times [2022-11-20 12:29:18,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:18,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612961323] [2022-11-20 12:29:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:18,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:18,378 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 12:29:18,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:18,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612961323] [2022-11-20 12:29:18,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612961323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:18,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214391182] [2022-11-20 12:29:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:18,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:18,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:29:18,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:29:18,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:29:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:18,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:29:18,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:29:18,574 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 12:29:18,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:29:18,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214391182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:18,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:29:18,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:29:18,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879541949] [2022-11-20 12:29:18,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:18,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:29:18,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:18,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:29:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:29:18,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 290 [2022-11-20 12:29:18,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 263 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 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 12:29:18,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:18,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 290 [2022-11-20 12:29:18,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:29:18,786 INFO L130 PetriNetUnfolder]: 20/630 cut-off events. [2022-11-20 12:29:18,786 INFO L131 PetriNetUnfolder]: For 193/400 co-relation queries the response was YES. [2022-11-20 12:29:18,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 630 events. 20/630 cut-off events. For 193/400 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2634 event pairs, 6 based on Foata normal form. 10/574 useless extension candidates. Maximal degree in co-relation 504. Up to 51 conditions per place. [2022-11-20 12:29:18,794 INFO L137 encePairwiseOnDemand]: 285/290 looper letters, 19 selfloop transitions, 6 changer transitions 0/265 dead transitions. [2022-11-20 12:29:18,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 265 transitions, 666 flow [2022-11-20 12:29:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:29:18,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:29:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1706 transitions. [2022-11-20 12:29:18,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8403940886699507 [2022-11-20 12:29:18,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1706 transitions. [2022-11-20 12:29:18,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1706 transitions. [2022-11-20 12:29:18,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:29:18,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1706 transitions. [2022-11-20 12:29:18,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 243.71428571428572) internal successors, (1706), 7 states have internal predecessors, (1706), 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 12:29:18,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 290.0) internal successors, (2320), 8 states have internal predecessors, (2320), 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 12:29:18,811 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 290.0) internal successors, (2320), 8 states have internal predecessors, (2320), 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 12:29:18,811 INFO L175 Difference]: Start difference. First operand has 275 places, 263 transitions, 614 flow. Second operand 7 states and 1706 transitions. [2022-11-20 12:29:18,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 265 transitions, 666 flow [2022-11-20 12:29:18,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 265 transitions, 654 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:29:18,817 INFO L231 Difference]: Finished difference. Result has 277 places, 262 transitions, 610 flow [2022-11-20 12:29:18,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=610, PETRI_PLACES=277, PETRI_TRANSITIONS=262} [2022-11-20 12:29:18,818 INFO L288 CegarLoopForPetriNet]: 266 programPoint places, 11 predicate places. [2022-11-20 12:29:18,819 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 262 transitions, 610 flow [2022-11-20 12:29:18,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 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 12:29:18,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:18,820 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] [2022-11-20 12:29:18,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:29:19,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5104ae31-3efe-4d9e-860e-24cd829948b4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:29:19,025 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:29:19,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:19,026 INFO L85 PathProgramCache]: Analyzing trace with hash 995249119, now seen corresponding path program 1 times [2022-11-20 12:29:19,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:19,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390249817] [2022-11-20 12:29:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:19,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:19,102 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 12:29:19,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:19,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390249817] [2022-11-20 12:29:19,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390249817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:19,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:19,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:29:19,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979122258] [2022-11-20 12:29:19,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:19,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:19,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:19,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:19,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:19,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 290 [2022-11-20 12:29:19,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 262 transitions, 610 flow. Second operand has 4 states, 4 states have (on average 229.25) internal successors, (917), 4 states have internal predecessors, (917), 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 12:29:19,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:19,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 290 [2022-11-20 12:29:19,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:29:30,542 INFO L130 PetriNetUnfolder]: 16519/62035 cut-off events. [2022-11-20 12:29:30,542 INFO L131 PetriNetUnfolder]: For 10431/10431 co-relation queries the response was YES. [2022-11-20 12:29:31,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88954 conditions, 62035 events. 16519/62035 cut-off events. For 10431/10431 co-relation queries the response was YES. Maximal size of possible extension queue 1648. Compared 889229 event pairs, 6876 based on Foata normal form. 0/54968 useless extension candidates. Maximal degree in co-relation 47458. Up to 16715 conditions per place. [2022-11-20 12:29:31,776 INFO L137 encePairwiseOnDemand]: 281/290 looper letters, 70 selfloop transitions, 10 changer transitions 0/310 dead transitions. [2022-11-20 12:29:31,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 310 transitions, 938 flow [2022-11-20 12:29:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:29:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1224 transitions. [2022-11-20 12:29:31,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441379310344828 [2022-11-20 12:29:31,782 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1224 transitions. [2022-11-20 12:29:31,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1224 transitions. [2022-11-20 12:29:31,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:29:31,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1224 transitions. [2022-11-20 12:29:31,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.8) internal successors, (1224), 5 states have internal predecessors, (1224), 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 12:29:31,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:29:31,789 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:29:31,790 INFO L175 Difference]: Start difference. First operand has 277 places, 262 transitions, 610 flow. Second operand 5 states and 1224 transitions. [2022-11-20 12:29:31,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 310 transitions, 938 flow [2022-11-20 12:29:31,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 310 transitions, 927 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:29:31,803 INFO L231 Difference]: Finished difference. Result has 279 places, 271 transitions, 678 flow [2022-11-20 12:29:31,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=678, PETRI_PLACES=279, PETRI_TRANSITIONS=271} [2022-11-20 12:29:31,804 INFO L288 CegarLoopForPetriNet]: 266 programPoint places, 13 predicate places. [2022-11-20 12:29:31,804 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 271 transitions, 678 flow [2022-11-20 12:29:31,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.25) internal successors, (917), 4 states have internal predecessors, (917), 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 12:29:31,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:29:31,806 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 12:29:31,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:29:31,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 12:29:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:31,807 INFO L85 PathProgramCache]: Analyzing trace with hash -454733088, now seen corresponding path program 1 times [2022-11-20 12:29:31,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:31,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248354070] [2022-11-20 12:29:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:31,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:31,940 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 12:29:31,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:31,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248354070] [2022-11-20 12:29:31,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248354070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:31,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:31,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:29:31,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474025824] [2022-11-20 12:29:31,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:31,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:29:31,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:29:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:29:31,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 290 [2022-11-20 12:29:31,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 271 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 224.66666666666666) internal successors, (1348), 6 states have internal predecessors, (1348), 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 12:29:31,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:29:31,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 290 [2022-11-20 12:29:31,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand