./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a --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 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e --- 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-b5237d8 [2022-11-21 14:00:16,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 14:00:16,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 14:00:16,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 14:00:16,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 14:00:16,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 14:00:16,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 14:00:16,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 14:00:16,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 14:00:16,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 14:00:16,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 14:00:16,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 14:00:16,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 14:00:16,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 14:00:16,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 14:00:16,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 14:00:16,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 14:00:16,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 14:00:16,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 14:00:16,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 14:00:16,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 14:00:16,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 14:00:16,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 14:00:16,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 14:00:16,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 14:00:16,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 14:00:16,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 14:00:16,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 14:00:16,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 14:00:16,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 14:00:16,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 14:00:16,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 14:00:16,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 14:00:16,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 14:00:16,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 14:00:16,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 14:00:16,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 14:00:16,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 14:00:16,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 14:00:16,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 14:00:16,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 14:00:16,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 14:00:16,935 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 14:00:16,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 14:00:16,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 14:00:16,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 14:00:16,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 14:00:16,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 14:00:16,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 14:00:16,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 14:00:16,937 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 14:00:16,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 14:00:16,938 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 14:00:16,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 14:00:16,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 14:00:16,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 14:00:16,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 14:00:16,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 14:00:16,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 14:00:16,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 14:00:16,939 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 14:00:16,939 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 14:00:16,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 14:00:16,940 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 14:00:16,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 14:00:16,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 14:00:16,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 14:00:16,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 14:00:16,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:00:16,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 14:00:16,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 14:00:16,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 14:00:16,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 14:00:16,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 14:00:16,942 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 14:00:16,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 14:00:16,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 14:00:16,942 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_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e [2022-11-21 14:00:17,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 14:00:17,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 14:00:17,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 14:00:17,398 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 14:00:17,398 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 14:00:17,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-21 14:00:20,452 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 14:00:20,649 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 14:00:20,649 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-21 14:00:20,656 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/data/ba1c4f13e/faa1c6405d1a4b579270d4e88a75b4f0/FLAGb44c2a45f [2022-11-21 14:00:20,671 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/data/ba1c4f13e/faa1c6405d1a4b579270d4e88a75b4f0 [2022-11-21 14:00:20,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 14:00:20,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 14:00:20,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 14:00:20,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 14:00:20,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 14:00:20,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:20,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab08c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20, skipping insertion in model container [2022-11-21 14:00:20,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:20,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 14:00:20,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:00:20,895 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_b321ef26-de60-4481-9272-d61006bcc2c3/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-21 14:00:20,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:00:20,913 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 14:00:20,941 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_b321ef26-de60-4481-9272-d61006bcc2c3/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-21 14:00:20,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:00:20,961 INFO L208 MainTranslator]: Completed translation [2022-11-21 14:00:20,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20 WrapperNode [2022-11-21 14:00:20,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 14:00:20,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 14:00:20,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 14:00:20,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 14:00:20,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:20,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:21,006 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 222 [2022-11-21 14:00:21,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 14:00:21,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 14:00:21,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 14:00:21,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 14:00:21,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:21,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:21,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:21,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:21,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:21,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:21,033 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:21,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:21,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 14:00:21,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 14:00:21,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 14:00:21,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 14:00:21,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (1/1) ... [2022-11-21 14:00:21,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:00:21,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:00:21,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 14:00:21,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b321ef26-de60-4481-9272-d61006bcc2c3/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 14:00:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 14:00:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 14:00:21,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 14:00:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 14:00:21,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 14:00:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 14:00:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 14:00:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 14:00:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 14:00:21,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 14:00:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 14:00:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 14:00:21,129 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 14:00:21,248 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 14:00:21,251 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 14:00:21,820 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 14:00:21,833 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 14:00:21,833 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 14:00:21,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:00:21 BoogieIcfgContainer [2022-11-21 14:00:21,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 14:00:21,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 14:00:21,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 14:00:21,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 14:00:21,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:00:20" (1/3) ... [2022-11-21 14:00:21,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213565e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:00:21, skipping insertion in model container [2022-11-21 14:00:21,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:00:20" (2/3) ... [2022-11-21 14:00:21,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213565e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:00:21, skipping insertion in model container [2022-11-21 14:00:21,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:00:21" (3/3) ... [2022-11-21 14:00:21,846 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2022-11-21 14:00:21,859 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 14:00:21,871 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 14:00:21,871 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-21 14:00:21,871 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 14:00:22,151 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 14:00:22,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 315 transitions, 646 flow [2022-11-21 14:00:22,427 INFO L130 PetriNetUnfolder]: 22/313 cut-off events. [2022-11-21 14:00:22,427 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 14:00:22,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 313 events. 22/313 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 597 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2022-11-21 14:00:22,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 315 transitions, 646 flow [2022-11-21 14:00:22,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 294 transitions, 597 flow [2022-11-21 14:00:22,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 14:00:22,465 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;@793e6120, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 14:00:22,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-11-21 14:00:22,488 INFO L130 PetriNetUnfolder]: 3/88 cut-off events. [2022-11-21 14:00:22,489 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 14:00:22,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:22,490 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] [2022-11-21 14:00:22,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:22,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1624898739, now seen corresponding path program 1 times [2022-11-21 14:00:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:22,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40110514] [2022-11-21 14:00:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:22,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:23,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:23,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40110514] [2022-11-21 14:00:23,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40110514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:23,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:23,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:23,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430995231] [2022-11-21 14:00:23,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:00:23,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:23,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:00:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:00:23,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-21 14:00:23,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 294 transitions, 597 flow. Second operand has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 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) [2022-11-21 14:00:23,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:23,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-21 14:00:23,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:23,519 INFO L130 PetriNetUnfolder]: 80/945 cut-off events. [2022-11-21 14:00:23,520 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-21 14:00:23,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 945 events. 80/945 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3915 event pairs, 1 based on Foata normal form. 240/1015 useless extension candidates. Maximal degree in co-relation 1133. Up to 54 conditions per place. [2022-11-21 14:00:23,542 INFO L137 encePairwiseOnDemand]: 294/315 looper letters, 60 selfloop transitions, 10 changer transitions 1/322 dead transitions. [2022-11-21 14:00:23,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 322 transitions, 817 flow [2022-11-21 14:00:23,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:00:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 14:00:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2277 transitions. [2022-11-21 14:00:23,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9035714285714286 [2022-11-21 14:00:23,570 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2277 transitions. [2022-11-21 14:00:23,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2277 transitions. [2022-11-21 14:00:23,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:23,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2277 transitions. [2022-11-21 14:00:23,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 284.625) internal successors, (2277), 8 states have internal predecessors, (2277), 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) [2022-11-21 14:00:23,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:00:23,607 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:00:23,609 INFO L175 Difference]: Start difference. First operand has 280 places, 294 transitions, 597 flow. Second operand 8 states and 2277 transitions. [2022-11-21 14:00:23,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 322 transitions, 817 flow [2022-11-21 14:00:23,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 322 transitions, 801 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 14:00:23,625 INFO L231 Difference]: Finished difference. Result has 290 places, 289 transitions, 636 flow [2022-11-21 14:00:23,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=636, PETRI_PLACES=290, PETRI_TRANSITIONS=289} [2022-11-21 14:00:23,634 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 10 predicate places. [2022-11-21 14:00:23,634 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 289 transitions, 636 flow [2022-11-21 14:00:23,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 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) [2022-11-21 14:00:23,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:23,636 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] [2022-11-21 14:00:23,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 14:00:23,637 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:23,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1167745870, now seen corresponding path program 1 times [2022-11-21 14:00:23,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:23,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073565866] [2022-11-21 14:00:23,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:23,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:23,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:23,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073565866] [2022-11-21 14:00:23,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073565866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:23,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:23,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:00:23,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969698149] [2022-11-21 14:00:23,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:23,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:00:23,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:00:23,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:00:23,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-21 14:00:23,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 289 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 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) [2022-11-21 14:00:23,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:23,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-21 14:00:23,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:24,231 INFO L130 PetriNetUnfolder]: 102/1224 cut-off events. [2022-11-21 14:00:24,231 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-21 14:00:24,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 1224 events. 102/1224 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5936 event pairs, 30 based on Foata normal form. 8/1024 useless extension candidates. Maximal degree in co-relation 1524. Up to 105 conditions per place. [2022-11-21 14:00:24,255 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 36 selfloop transitions, 6 changer transitions 0/301 dead transitions. [2022-11-21 14:00:24,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 301 transitions, 749 flow [2022-11-21 14:00:24,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:00:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 14:00:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-21 14:00:24,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-21 14:00:24,261 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-21 14:00:24,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-21 14:00:24,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:24,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-21 14:00:24,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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) [2022-11-21 14:00:24,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:24,270 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:24,270 INFO L175 Difference]: Start difference. First operand has 290 places, 289 transitions, 636 flow. Second operand 4 states and 1140 transitions. [2022-11-21 14:00:24,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 301 transitions, 749 flow [2022-11-21 14:00:24,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 301 transitions, 747 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 14:00:24,284 INFO L231 Difference]: Finished difference. Result has 293 places, 291 transitions, 674 flow [2022-11-21 14:00:24,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=674, PETRI_PLACES=293, PETRI_TRANSITIONS=291} [2022-11-21 14:00:24,285 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 13 predicate places. [2022-11-21 14:00:24,286 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 291 transitions, 674 flow [2022-11-21 14:00:24,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 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) [2022-11-21 14:00:24,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:24,287 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] [2022-11-21 14:00:24,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 14:00:24,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:24,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:24,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1355556881, now seen corresponding path program 1 times [2022-11-21 14:00:24,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:24,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610073347] [2022-11-21 14:00:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:24,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:24,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:24,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610073347] [2022-11-21 14:00:24,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610073347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:24,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:24,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:24,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55140545] [2022-11-21 14:00:24,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:24,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:00:24,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:00:24,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:00:24,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-21 14:00:24,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 291 transitions, 674 flow. Second operand has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 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) [2022-11-21 14:00:24,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:24,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-21 14:00:24,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:25,657 INFO L130 PetriNetUnfolder]: 382/2951 cut-off events. [2022-11-21 14:00:25,657 INFO L131 PetriNetUnfolder]: For 328/333 co-relation queries the response was YES. [2022-11-21 14:00:25,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 2951 events. 382/2951 cut-off events. For 328/333 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 27695 event pairs, 0 based on Foata normal form. 0/2213 useless extension candidates. Maximal degree in co-relation 3620. Up to 294 conditions per place. [2022-11-21 14:00:25,717 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 57 selfloop transitions, 10 changer transitions 0/327 dead transitions. [2022-11-21 14:00:25,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 327 transitions, 885 flow [2022-11-21 14:00:25,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:00:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 14:00:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2228 transitions. [2022-11-21 14:00:25,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8841269841269841 [2022-11-21 14:00:25,724 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2228 transitions. [2022-11-21 14:00:25,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2228 transitions. [2022-11-21 14:00:25,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:25,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2228 transitions. [2022-11-21 14:00:25,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 278.5) internal successors, (2228), 8 states have internal predecessors, (2228), 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) [2022-11-21 14:00:25,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:00:25,739 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:00:25,739 INFO L175 Difference]: Start difference. First operand has 293 places, 291 transitions, 674 flow. Second operand 8 states and 2228 transitions. [2022-11-21 14:00:25,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 327 transitions, 885 flow [2022-11-21 14:00:25,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 327 transitions, 885 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 14:00:25,749 INFO L231 Difference]: Finished difference. Result has 306 places, 298 transitions, 742 flow [2022-11-21 14:00:25,749 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=742, PETRI_PLACES=306, PETRI_TRANSITIONS=298} [2022-11-21 14:00:25,751 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 26 predicate places. [2022-11-21 14:00:25,751 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 298 transitions, 742 flow [2022-11-21 14:00:25,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 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) [2022-11-21 14:00:25,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:25,753 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:25,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 14:00:25,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:25,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:25,755 INFO L85 PathProgramCache]: Analyzing trace with hash -927408762, now seen corresponding path program 1 times [2022-11-21 14:00:25,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:25,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097287920] [2022-11-21 14:00:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:25,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:25,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:25,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097287920] [2022-11-21 14:00:25,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097287920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:25,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:25,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:00:25,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629752469] [2022-11-21 14:00:25,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:25,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:00:25,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:25,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:00:25,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:00:25,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-21 14:00:25,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 298 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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) [2022-11-21 14:00:25,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:25,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-21 14:00:25,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:27,722 INFO L130 PetriNetUnfolder]: 514/4334 cut-off events. [2022-11-21 14:00:27,723 INFO L131 PetriNetUnfolder]: For 624/629 co-relation queries the response was YES. [2022-11-21 14:00:27,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5513 conditions, 4334 events. 514/4334 cut-off events. For 624/629 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41832 event pairs, 180 based on Foata normal form. 28/3321 useless extension candidates. Maximal degree in co-relation 5424. Up to 427 conditions per place. [2022-11-21 14:00:27,810 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 35 selfloop transitions, 6 changer transitions 0/309 dead transitions. [2022-11-21 14:00:27,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 309 transitions, 848 flow [2022-11-21 14:00:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:00:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 14:00:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1139 transitions. [2022-11-21 14:00:27,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.903968253968254 [2022-11-21 14:00:27,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1139 transitions. [2022-11-21 14:00:27,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1139 transitions. [2022-11-21 14:00:27,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:27,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1139 transitions. [2022-11-21 14:00:27,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 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) [2022-11-21 14:00:27,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:27,828 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:27,829 INFO L175 Difference]: Start difference. First operand has 306 places, 298 transitions, 742 flow. Second operand 4 states and 1139 transitions. [2022-11-21 14:00:27,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 309 transitions, 848 flow [2022-11-21 14:00:27,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 309 transitions, 846 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 14:00:27,840 INFO L231 Difference]: Finished difference. Result has 310 places, 300 transitions, 780 flow [2022-11-21 14:00:27,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=780, PETRI_PLACES=310, PETRI_TRANSITIONS=300} [2022-11-21 14:00:27,843 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 30 predicate places. [2022-11-21 14:00:27,844 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 300 transitions, 780 flow [2022-11-21 14:00:27,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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) [2022-11-21 14:00:27,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:27,851 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:27,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 14:00:27,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:27,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:27,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1934126745, now seen corresponding path program 1 times [2022-11-21 14:00:27,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:27,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160284768] [2022-11-21 14:00:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:27,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:27,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:27,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160284768] [2022-11-21 14:00:27,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160284768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:27,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:27,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:00:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893340736] [2022-11-21 14:00:27,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:00:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:27,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:00:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:00:27,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-21 14:00:27,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 300 transitions, 780 flow. Second operand has 4 states, 4 states have (on average 277.25) internal successors, (1109), 4 states have internal predecessors, (1109), 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) [2022-11-21 14:00:27,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:27,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-21 14:00:27,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:28,790 INFO L130 PetriNetUnfolder]: 110/1602 cut-off events. [2022-11-21 14:00:28,790 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-11-21 14:00:28,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2140 conditions, 1602 events. 110/1602 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9018 event pairs, 24 based on Foata normal form. 4/1334 useless extension candidates. Maximal degree in co-relation 2004. Up to 95 conditions per place. [2022-11-21 14:00:28,859 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 37 selfloop transitions, 5 changer transitions 0/310 dead transitions. [2022-11-21 14:00:28,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 310 transitions, 889 flow [2022-11-21 14:00:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:00:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 14:00:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1138 transitions. [2022-11-21 14:00:28,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9031746031746032 [2022-11-21 14:00:28,862 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1138 transitions. [2022-11-21 14:00:28,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1138 transitions. [2022-11-21 14:00:28,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:28,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1138 transitions. [2022-11-21 14:00:28,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 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) [2022-11-21 14:00:28,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:28,869 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:28,869 INFO L175 Difference]: Start difference. First operand has 310 places, 300 transitions, 780 flow. Second operand 4 states and 1138 transitions. [2022-11-21 14:00:28,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 310 transitions, 889 flow [2022-11-21 14:00:28,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 310 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 14:00:28,876 INFO L231 Difference]: Finished difference. Result has 313 places, 300 transitions, 791 flow [2022-11-21 14:00:28,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=791, PETRI_PLACES=313, PETRI_TRANSITIONS=300} [2022-11-21 14:00:28,878 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 33 predicate places. [2022-11-21 14:00:28,878 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 300 transitions, 791 flow [2022-11-21 14:00:28,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.25) internal successors, (1109), 4 states have internal predecessors, (1109), 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) [2022-11-21 14:00:28,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:28,879 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:28,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 14:00:28,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:28,880 INFO L85 PathProgramCache]: Analyzing trace with hash -171612259, now seen corresponding path program 1 times [2022-11-21 14:00:28,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:28,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230836865] [2022-11-21 14:00:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:28,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:28,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:28,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230836865] [2022-11-21 14:00:28,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230836865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:28,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:28,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:28,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344896411] [2022-11-21 14:00:28,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:28,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:00:28,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:28,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:00:28,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:00:28,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-21 14:00:28,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 300 transitions, 791 flow. Second operand has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 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) [2022-11-21 14:00:28,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:28,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-21 14:00:28,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:29,896 INFO L130 PetriNetUnfolder]: 113/1609 cut-off events. [2022-11-21 14:00:29,896 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-11-21 14:00:29,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 1609 events. 113/1609 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9152 event pairs, 0 based on Foata normal form. 0/1339 useless extension candidates. Maximal degree in co-relation 1832. Up to 120 conditions per place. [2022-11-21 14:00:29,987 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 50 selfloop transitions, 11 changer transitions 0/322 dead transitions. [2022-11-21 14:00:29,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 322 transitions, 987 flow [2022-11-21 14:00:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:00:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 14:00:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2219 transitions. [2022-11-21 14:00:29,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8805555555555555 [2022-11-21 14:00:29,994 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2219 transitions. [2022-11-21 14:00:29,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2219 transitions. [2022-11-21 14:00:29,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:29,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2219 transitions. [2022-11-21 14:00:30,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.375) internal successors, (2219), 8 states have internal predecessors, (2219), 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) [2022-11-21 14:00:30,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:00:30,010 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:00:30,010 INFO L175 Difference]: Start difference. First operand has 313 places, 300 transitions, 791 flow. Second operand 8 states and 2219 transitions. [2022-11-21 14:00:30,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 322 transitions, 987 flow [2022-11-21 14:00:30,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 322 transitions, 975 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 14:00:30,021 INFO L231 Difference]: Finished difference. Result has 321 places, 302 transitions, 838 flow [2022-11-21 14:00:30,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=321, PETRI_TRANSITIONS=302} [2022-11-21 14:00:30,026 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 41 predicate places. [2022-11-21 14:00:30,026 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 302 transitions, 838 flow [2022-11-21 14:00:30,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 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) [2022-11-21 14:00:30,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:30,027 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:30,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 14:00:30,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:30,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash -835270080, now seen corresponding path program 1 times [2022-11-21 14:00:30,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:30,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200102270] [2022-11-21 14:00:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:30,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:30,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:30,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200102270] [2022-11-21 14:00:30,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200102270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:30,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:30,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:30,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838236067] [2022-11-21 14:00:30,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:30,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:00:30,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:30,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:00:30,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:00:30,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 315 [2022-11-21 14:00:30,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 302 transitions, 838 flow. Second operand has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 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) [2022-11-21 14:00:30,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:30,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 315 [2022-11-21 14:00:30,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:30,946 INFO L130 PetriNetUnfolder]: 125/1627 cut-off events. [2022-11-21 14:00:30,946 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2022-11-21 14:00:31,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 1627 events. 125/1627 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9356 event pairs, 37 based on Foata normal form. 0/1361 useless extension candidates. Maximal degree in co-relation 2126. Up to 128 conditions per place. [2022-11-21 14:00:31,037 INFO L137 encePairwiseOnDemand]: 307/315 looper letters, 44 selfloop transitions, 9 changer transitions 0/317 dead transitions. [2022-11-21 14:00:31,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 317 transitions, 973 flow [2022-11-21 14:00:31,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:00:31,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 14:00:31,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1674 transitions. [2022-11-21 14:00:31,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-11-21 14:00:31,042 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1674 transitions. [2022-11-21 14:00:31,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1674 transitions. [2022-11-21 14:00:31,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:31,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1674 transitions. [2022-11-21 14:00:31,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 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) [2022-11-21 14:00:31,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 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) [2022-11-21 14:00:31,051 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 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) [2022-11-21 14:00:31,051 INFO L175 Difference]: Start difference. First operand has 321 places, 302 transitions, 838 flow. Second operand 6 states and 1674 transitions. [2022-11-21 14:00:31,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 317 transitions, 973 flow [2022-11-21 14:00:31,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 317 transitions, 949 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-21 14:00:31,060 INFO L231 Difference]: Finished difference. Result has 321 places, 304 transitions, 847 flow [2022-11-21 14:00:31,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=847, PETRI_PLACES=321, PETRI_TRANSITIONS=304} [2022-11-21 14:00:31,062 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 41 predicate places. [2022-11-21 14:00:31,062 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 304 transitions, 847 flow [2022-11-21 14:00:31,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 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) [2022-11-21 14:00:31,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:31,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:31,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 14:00:31,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:31,064 INFO L85 PathProgramCache]: Analyzing trace with hash -52923283, now seen corresponding path program 1 times [2022-11-21 14:00:31,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:31,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241615171] [2022-11-21 14:00:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:31,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:31,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:31,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241615171] [2022-11-21 14:00:31,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241615171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:31,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:31,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:00:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543527688] [2022-11-21 14:00:31,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:31,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:00:31,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:00:31,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:00:31,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-21 14:00:31,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 304 transitions, 847 flow. Second operand has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 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) [2022-11-21 14:00:31,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:31,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-21 14:00:31,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:32,651 INFO L130 PetriNetUnfolder]: 498/4323 cut-off events. [2022-11-21 14:00:32,652 INFO L131 PetriNetUnfolder]: For 935/940 co-relation queries the response was YES. [2022-11-21 14:00:32,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5711 conditions, 4323 events. 498/4323 cut-off events. For 935/940 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41792 event pairs, 144 based on Foata normal form. 14/3315 useless extension candidates. Maximal degree in co-relation 5614. Up to 397 conditions per place. [2022-11-21 14:00:32,746 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 36 selfloop transitions, 5 changer transitions 0/313 dead transitions. [2022-11-21 14:00:32,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 313 transitions, 949 flow [2022-11-21 14:00:32,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:00:32,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 14:00:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1137 transitions. [2022-11-21 14:00:32,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023809523809524 [2022-11-21 14:00:32,750 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1137 transitions. [2022-11-21 14:00:32,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1137 transitions. [2022-11-21 14:00:32,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:32,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1137 transitions. [2022-11-21 14:00:32,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 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) [2022-11-21 14:00:32,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:32,773 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:32,774 INFO L175 Difference]: Start difference. First operand has 321 places, 304 transitions, 847 flow. Second operand 4 states and 1137 transitions. [2022-11-21 14:00:32,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 313 transitions, 949 flow [2022-11-21 14:00:32,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 313 transitions, 933 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-21 14:00:32,783 INFO L231 Difference]: Finished difference. Result has 322 places, 304 transitions, 846 flow [2022-11-21 14:00:32,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=846, PETRI_PLACES=322, PETRI_TRANSITIONS=304} [2022-11-21 14:00:32,787 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 42 predicate places. [2022-11-21 14:00:32,787 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 304 transitions, 846 flow [2022-11-21 14:00:32,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 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) [2022-11-21 14:00:32,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:32,789 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:32,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 14:00:32,790 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:32,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:32,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1640620869, now seen corresponding path program 1 times [2022-11-21 14:00:32,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:32,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881736377] [2022-11-21 14:00:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:32,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:32,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881736377] [2022-11-21 14:00:32,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881736377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:32,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:32,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:32,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780059332] [2022-11-21 14:00:32,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:32,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:00:32,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:32,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:00:32,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:00:32,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-21 14:00:32,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 304 transitions, 846 flow. Second operand has 6 states, 6 states have (on average 272.5) internal successors, (1635), 6 states have internal predecessors, (1635), 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) [2022-11-21 14:00:32,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:32,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-21 14:00:32,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:34,166 INFO L130 PetriNetUnfolder]: 516/4357 cut-off events. [2022-11-21 14:00:34,166 INFO L131 PetriNetUnfolder]: For 1134/1139 co-relation queries the response was YES. [2022-11-21 14:00:34,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5887 conditions, 4357 events. 516/4357 cut-off events. For 1134/1139 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 44995 event pairs, 0 based on Foata normal form. 0/3338 useless extension candidates. Maximal degree in co-relation 5783. Up to 497 conditions per place. [2022-11-21 14:00:34,273 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 48 selfloop transitions, 11 changer transitions 0/324 dead transitions. [2022-11-21 14:00:34,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 324 transitions, 1027 flow [2022-11-21 14:00:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:00:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 14:00:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2217 transitions. [2022-11-21 14:00:34,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8797619047619047 [2022-11-21 14:00:34,279 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2217 transitions. [2022-11-21 14:00:34,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2217 transitions. [2022-11-21 14:00:34,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:34,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2217 transitions. [2022-11-21 14:00:34,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 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) [2022-11-21 14:00:34,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:00:34,290 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:00:34,290 INFO L175 Difference]: Start difference. First operand has 322 places, 304 transitions, 846 flow. Second operand 8 states and 2217 transitions. [2022-11-21 14:00:34,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 324 transitions, 1027 flow [2022-11-21 14:00:34,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 324 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 14:00:34,300 INFO L231 Difference]: Finished difference. Result has 330 places, 306 transitions, 893 flow [2022-11-21 14:00:34,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=893, PETRI_PLACES=330, PETRI_TRANSITIONS=306} [2022-11-21 14:00:34,301 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 50 predicate places. [2022-11-21 14:00:34,301 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 306 transitions, 893 flow [2022-11-21 14:00:34,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.5) internal successors, (1635), 6 states have internal predecessors, (1635), 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) [2022-11-21 14:00:34,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:34,302 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:34,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 14:00:34,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:34,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2044668126, now seen corresponding path program 1 times [2022-11-21 14:00:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:34,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285382710] [2022-11-21 14:00:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:34,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:34,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:34,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285382710] [2022-11-21 14:00:34,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285382710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:34,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:34,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:00:34,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180240308] [2022-11-21 14:00:34,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:34,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:00:34,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:34,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:00:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:00:34,425 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-21 14:00:34,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 306 transitions, 893 flow. Second operand has 8 states, 8 states have (on average 266.125) internal successors, (2129), 8 states have internal predecessors, (2129), 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) [2022-11-21 14:00:34,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:34,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-21 14:00:34,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:35,463 INFO L130 PetriNetUnfolder]: 150/2135 cut-off events. [2022-11-21 14:00:35,463 INFO L131 PetriNetUnfolder]: For 426/426 co-relation queries the response was YES. [2022-11-21 14:00:35,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 2135 events. 150/2135 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13838 event pairs, 2 based on Foata normal form. 0/1787 useless extension candidates. Maximal degree in co-relation 2294. Up to 91 conditions per place. [2022-11-21 14:00:35,526 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 66 selfloop transitions, 21 changer transitions 0/345 dead transitions. [2022-11-21 14:00:35,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 345 transitions, 1191 flow [2022-11-21 14:00:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:00:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 14:00:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3247 transitions. [2022-11-21 14:00:35,536 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858994708994709 [2022-11-21 14:00:35,536 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3247 transitions. [2022-11-21 14:00:35,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3247 transitions. [2022-11-21 14:00:35,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:35,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3247 transitions. [2022-11-21 14:00:35,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.5833333333333) internal successors, (3247), 12 states have internal predecessors, (3247), 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) [2022-11-21 14:00:35,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 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) [2022-11-21 14:00:35,567 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 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) [2022-11-21 14:00:35,567 INFO L175 Difference]: Start difference. First operand has 330 places, 306 transitions, 893 flow. Second operand 12 states and 3247 transitions. [2022-11-21 14:00:35,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 345 transitions, 1191 flow [2022-11-21 14:00:35,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 345 transitions, 1179 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 14:00:35,579 INFO L231 Difference]: Finished difference. Result has 341 places, 316 transitions, 1001 flow [2022-11-21 14:00:35,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1001, PETRI_PLACES=341, PETRI_TRANSITIONS=316} [2022-11-21 14:00:35,581 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 61 predicate places. [2022-11-21 14:00:35,582 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 316 transitions, 1001 flow [2022-11-21 14:00:35,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.125) internal successors, (2129), 8 states have internal predecessors, (2129), 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) [2022-11-21 14:00:35,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:35,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:35,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 14:00:35,586 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:35,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:35,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1039798336, now seen corresponding path program 1 times [2022-11-21 14:00:35,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:35,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740184395] [2022-11-21 14:00:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:35,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:35,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:35,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740184395] [2022-11-21 14:00:35,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740184395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:35,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:35,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:00:35,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630389607] [2022-11-21 14:00:35,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:35,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:00:35,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:35,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:00:35,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:00:35,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-21 14:00:35,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 316 transitions, 1001 flow. Second operand has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 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) [2022-11-21 14:00:35,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:35,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-21 14:00:35,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:36,686 INFO L130 PetriNetUnfolder]: 128/1634 cut-off events. [2022-11-21 14:00:36,686 INFO L131 PetriNetUnfolder]: For 507/507 co-relation queries the response was YES. [2022-11-21 14:00:36,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 1634 events. 128/1634 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9444 event pairs, 1 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 2115. Up to 84 conditions per place. [2022-11-21 14:00:36,758 INFO L137 encePairwiseOnDemand]: 301/315 looper letters, 65 selfloop transitions, 20 changer transitions 0/349 dead transitions. [2022-11-21 14:00:36,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 349 transitions, 1278 flow [2022-11-21 14:00:36,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:00:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 14:00:36,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3249 transitions. [2022-11-21 14:00:36,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595238095238096 [2022-11-21 14:00:36,768 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3249 transitions. [2022-11-21 14:00:36,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3249 transitions. [2022-11-21 14:00:36,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:36,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3249 transitions. [2022-11-21 14:00:36,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.75) internal successors, (3249), 12 states have internal predecessors, (3249), 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) [2022-11-21 14:00:36,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 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) [2022-11-21 14:00:36,789 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 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) [2022-11-21 14:00:36,789 INFO L175 Difference]: Start difference. First operand has 341 places, 316 transitions, 1001 flow. Second operand 12 states and 3249 transitions. [2022-11-21 14:00:36,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 349 transitions, 1278 flow [2022-11-21 14:00:36,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 349 transitions, 1262 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-21 14:00:36,802 INFO L231 Difference]: Finished difference. Result has 352 places, 323 transitions, 1086 flow [2022-11-21 14:00:36,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1086, PETRI_PLACES=352, PETRI_TRANSITIONS=323} [2022-11-21 14:00:36,804 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 72 predicate places. [2022-11-21 14:00:36,804 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 323 transitions, 1086 flow [2022-11-21 14:00:36,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 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) [2022-11-21 14:00:36,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:36,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:36,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 14:00:36,806 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash 491699742, now seen corresponding path program 1 times [2022-11-21 14:00:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:36,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601468377] [2022-11-21 14:00:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:36,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:36,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:36,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601468377] [2022-11-21 14:00:36,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601468377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:36,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:36,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:00:36,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075154246] [2022-11-21 14:00:36,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:36,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:00:36,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:00:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:00:36,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-21 14:00:36,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 323 transitions, 1086 flow. Second operand has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 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) [2022-11-21 14:00:36,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:36,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-21 14:00:36,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:38,605 INFO L130 PetriNetUnfolder]: 578/4955 cut-off events. [2022-11-21 14:00:38,605 INFO L131 PetriNetUnfolder]: For 1598/1603 co-relation queries the response was YES. [2022-11-21 14:00:38,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6780 conditions, 4955 events. 578/4955 cut-off events. For 1598/1603 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 51579 event pairs, 222 based on Foata normal form. 14/3804 useless extension candidates. Maximal degree in co-relation 6664. Up to 525 conditions per place. [2022-11-21 14:00:38,690 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 36 selfloop transitions, 5 changer transitions 0/331 dead transitions. [2022-11-21 14:00:38,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 331 transitions, 1188 flow [2022-11-21 14:00:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:00:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 14:00:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1135 transitions. [2022-11-21 14:00:38,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9007936507936508 [2022-11-21 14:00:38,694 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1135 transitions. [2022-11-21 14:00:38,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1135 transitions. [2022-11-21 14:00:38,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:38,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1135 transitions. [2022-11-21 14:00:38,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 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) [2022-11-21 14:00:38,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:38,701 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:38,701 INFO L175 Difference]: Start difference. First operand has 352 places, 323 transitions, 1086 flow. Second operand 4 states and 1135 transitions. [2022-11-21 14:00:38,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 331 transitions, 1188 flow [2022-11-21 14:00:38,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 331 transitions, 1162 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-21 14:00:38,715 INFO L231 Difference]: Finished difference. Result has 349 places, 323 transitions, 1082 flow [2022-11-21 14:00:38,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1082, PETRI_PLACES=349, PETRI_TRANSITIONS=323} [2022-11-21 14:00:38,716 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 69 predicate places. [2022-11-21 14:00:38,717 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 323 transitions, 1082 flow [2022-11-21 14:00:38,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 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) [2022-11-21 14:00:38,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:38,718 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:38,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 14:00:38,718 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:38,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:38,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1708205948, now seen corresponding path program 1 times [2022-11-21 14:00:38,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:38,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753646385] [2022-11-21 14:00:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:38,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:38,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753646385] [2022-11-21 14:00:38,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753646385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:38,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:38,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:38,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249369335] [2022-11-21 14:00:38,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:38,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:00:38,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:38,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:00:38,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:00:38,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-21 14:00:38,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 323 transitions, 1082 flow. Second operand has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 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) [2022-11-21 14:00:38,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:38,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-21 14:00:38,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:39,776 INFO L130 PetriNetUnfolder]: 206/1781 cut-off events. [2022-11-21 14:00:39,776 INFO L131 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2022-11-21 14:00:39,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3091 conditions, 1781 events. 206/1781 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11028 event pairs, 61 based on Foata normal form. 4/1533 useless extension candidates. Maximal degree in co-relation 2904. Up to 226 conditions per place. [2022-11-21 14:00:39,846 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 65 selfloop transitions, 14 changer transitions 0/334 dead transitions. [2022-11-21 14:00:39,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 334 transitions, 1272 flow [2022-11-21 14:00:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:00:39,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 14:00:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1844 transitions. [2022-11-21 14:00:39,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.836281179138322 [2022-11-21 14:00:39,851 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1844 transitions. [2022-11-21 14:00:39,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1844 transitions. [2022-11-21 14:00:39,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:39,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1844 transitions. [2022-11-21 14:00:39,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.42857142857144) internal successors, (1844), 7 states have internal predecessors, (1844), 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) [2022-11-21 14:00:39,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 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) [2022-11-21 14:00:39,861 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 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) [2022-11-21 14:00:39,862 INFO L175 Difference]: Start difference. First operand has 349 places, 323 transitions, 1082 flow. Second operand 7 states and 1844 transitions. [2022-11-21 14:00:39,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 334 transitions, 1272 flow [2022-11-21 14:00:39,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 334 transitions, 1268 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 14:00:39,873 INFO L231 Difference]: Finished difference. Result has 359 places, 327 transitions, 1151 flow [2022-11-21 14:00:39,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1151, PETRI_PLACES=359, PETRI_TRANSITIONS=327} [2022-11-21 14:00:39,874 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 79 predicate places. [2022-11-21 14:00:39,875 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 327 transitions, 1151 flow [2022-11-21 14:00:39,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 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) [2022-11-21 14:00:39,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:39,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:39,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 14:00:39,876 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:39,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:39,877 INFO L85 PathProgramCache]: Analyzing trace with hash -687745817, now seen corresponding path program 1 times [2022-11-21 14:00:39,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:39,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456312188] [2022-11-21 14:00:39,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:39,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:40,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:40,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456312188] [2022-11-21 14:00:40,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456312188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:40,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:40,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:40,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968459065] [2022-11-21 14:00:40,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:40,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:00:40,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:00:40,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:00:40,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-21 14:00:40,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 327 transitions, 1151 flow. Second operand has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 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) [2022-11-21 14:00:40,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:40,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-21 14:00:40,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:40,877 INFO L130 PetriNetUnfolder]: 200/1771 cut-off events. [2022-11-21 14:00:40,878 INFO L131 PetriNetUnfolder]: For 797/797 co-relation queries the response was YES. [2022-11-21 14:00:40,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 1771 events. 200/1771 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10979 event pairs, 50 based on Foata normal form. 4/1543 useless extension candidates. Maximal degree in co-relation 2976. Up to 245 conditions per place. [2022-11-21 14:00:40,965 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 73 selfloop transitions, 16 changer transitions 0/347 dead transitions. [2022-11-21 14:00:40,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 347 transitions, 1413 flow [2022-11-21 14:00:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:00:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 14:00:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1852 transitions. [2022-11-21 14:00:40,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8399092970521542 [2022-11-21 14:00:40,970 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1852 transitions. [2022-11-21 14:00:40,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1852 transitions. [2022-11-21 14:00:40,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:40,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1852 transitions. [2022-11-21 14:00:40,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 264.57142857142856) internal successors, (1852), 7 states have internal predecessors, (1852), 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) [2022-11-21 14:00:40,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 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) [2022-11-21 14:00:40,980 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 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) [2022-11-21 14:00:40,980 INFO L175 Difference]: Start difference. First operand has 359 places, 327 transitions, 1151 flow. Second operand 7 states and 1852 transitions. [2022-11-21 14:00:40,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 347 transitions, 1413 flow [2022-11-21 14:00:40,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 347 transitions, 1403 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 14:00:40,992 INFO L231 Difference]: Finished difference. Result has 369 places, 334 transitions, 1248 flow [2022-11-21 14:00:40,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1248, PETRI_PLACES=369, PETRI_TRANSITIONS=334} [2022-11-21 14:00:40,994 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 89 predicate places. [2022-11-21 14:00:40,994 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 334 transitions, 1248 flow [2022-11-21 14:00:40,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 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) [2022-11-21 14:00:40,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:40,995 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:40,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 14:00:40,995 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:40,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:40,996 INFO L85 PathProgramCache]: Analyzing trace with hash -562743168, now seen corresponding path program 1 times [2022-11-21 14:00:40,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:40,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745747217] [2022-11-21 14:00:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:40,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:41,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:41,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745747217] [2022-11-21 14:00:41,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745747217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:41,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:41,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:00:41,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54590835] [2022-11-21 14:00:41,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:41,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:00:41,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:41,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:00:41,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:00:41,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-21 14:00:41,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 334 transitions, 1248 flow. Second operand has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 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) [2022-11-21 14:00:41,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:41,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-21 14:00:41,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:42,783 INFO L130 PetriNetUnfolder]: 734/5120 cut-off events. [2022-11-21 14:00:42,783 INFO L131 PetriNetUnfolder]: For 1980/1985 co-relation queries the response was YES. [2022-11-21 14:00:42,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7541 conditions, 5120 events. 734/5120 cut-off events. For 1980/1985 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 56567 event pairs, 6 based on Foata normal form. 0/3903 useless extension candidates. Maximal degree in co-relation 7411. Up to 606 conditions per place. [2022-11-21 14:00:42,880 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 60 selfloop transitions, 20 changer transitions 0/368 dead transitions. [2022-11-21 14:00:42,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 368 transitions, 1497 flow [2022-11-21 14:00:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:00:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 14:00:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3245 transitions. [2022-11-21 14:00:42,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584656084656085 [2022-11-21 14:00:42,887 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3245 transitions. [2022-11-21 14:00:42,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3245 transitions. [2022-11-21 14:00:42,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:42,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3245 transitions. [2022-11-21 14:00:42,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.4166666666667) internal successors, (3245), 12 states have internal predecessors, (3245), 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) [2022-11-21 14:00:42,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 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) [2022-11-21 14:00:42,902 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 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) [2022-11-21 14:00:42,902 INFO L175 Difference]: Start difference. First operand has 369 places, 334 transitions, 1248 flow. Second operand 12 states and 3245 transitions. [2022-11-21 14:00:42,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 368 transitions, 1497 flow [2022-11-21 14:00:42,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 368 transitions, 1488 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 14:00:42,918 INFO L231 Difference]: Finished difference. Result has 384 places, 342 transitions, 1339 flow [2022-11-21 14:00:42,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1339, PETRI_PLACES=384, PETRI_TRANSITIONS=342} [2022-11-21 14:00:42,920 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 104 predicate places. [2022-11-21 14:00:42,920 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 342 transitions, 1339 flow [2022-11-21 14:00:42,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 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) [2022-11-21 14:00:42,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:42,921 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:42,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 14:00:42,922 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:42,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:42,922 INFO L85 PathProgramCache]: Analyzing trace with hash -265168108, now seen corresponding path program 1 times [2022-11-21 14:00:42,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:42,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37162349] [2022-11-21 14:00:42,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:42,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:43,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:43,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37162349] [2022-11-21 14:00:43,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37162349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:43,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:43,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:00:43,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372400696] [2022-11-21 14:00:43,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:43,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:00:43,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:00:43,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:00:43,053 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-21 14:00:43,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 342 transitions, 1339 flow. Second operand has 8 states, 8 states have (on average 266.375) internal successors, (2131), 8 states have internal predecessors, (2131), 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) [2022-11-21 14:00:43,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:43,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-21 14:00:43,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:44,874 INFO L130 PetriNetUnfolder]: 674/5046 cut-off events. [2022-11-21 14:00:44,874 INFO L131 PetriNetUnfolder]: For 2726/2731 co-relation queries the response was YES. [2022-11-21 14:00:45,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7739 conditions, 5046 events. 674/5046 cut-off events. For 2726/2731 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 54493 event pairs, 6 based on Foata normal form. 0/3921 useless extension candidates. Maximal degree in co-relation 7600. Up to 546 conditions per place. [2022-11-21 14:00:45,040 INFO L137 encePairwiseOnDemand]: 301/315 looper letters, 62 selfloop transitions, 21 changer transitions 0/374 dead transitions. [2022-11-21 14:00:45,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 374 transitions, 1600 flow [2022-11-21 14:00:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:00:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 14:00:45,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3247 transitions. [2022-11-21 14:00:45,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858994708994709 [2022-11-21 14:00:45,045 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3247 transitions. [2022-11-21 14:00:45,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3247 transitions. [2022-11-21 14:00:45,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:45,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3247 transitions. [2022-11-21 14:00:45,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.5833333333333) internal successors, (3247), 12 states have internal predecessors, (3247), 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) [2022-11-21 14:00:45,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 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) [2022-11-21 14:00:45,059 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 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) [2022-11-21 14:00:45,060 INFO L175 Difference]: Start difference. First operand has 384 places, 342 transitions, 1339 flow. Second operand 12 states and 3247 transitions. [2022-11-21 14:00:45,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 374 transitions, 1600 flow [2022-11-21 14:00:45,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 374 transitions, 1582 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-21 14:00:45,079 INFO L231 Difference]: Finished difference. Result has 395 places, 349 transitions, 1422 flow [2022-11-21 14:00:45,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1422, PETRI_PLACES=395, PETRI_TRANSITIONS=349} [2022-11-21 14:00:45,081 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 115 predicate places. [2022-11-21 14:00:45,081 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 349 transitions, 1422 flow [2022-11-21 14:00:45,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.375) internal successors, (2131), 8 states have internal predecessors, (2131), 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) [2022-11-21 14:00:45,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:45,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:45,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 14:00:45,083 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:45,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:45,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1650504552, now seen corresponding path program 1 times [2022-11-21 14:00:45,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:45,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996003053] [2022-11-21 14:00:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:45,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:45,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:45,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996003053] [2022-11-21 14:00:45,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996003053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:45,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:45,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:45,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507263380] [2022-11-21 14:00:45,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:45,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:00:45,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:45,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:00:45,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:00:45,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-21 14:00:45,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 349 transitions, 1422 flow. Second operand has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 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) [2022-11-21 14:00:45,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:45,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-21 14:00:45,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:47,664 INFO L130 PetriNetUnfolder]: 1178/5508 cut-off events. [2022-11-21 14:00:47,665 INFO L131 PetriNetUnfolder]: For 3531/3536 co-relation queries the response was YES. [2022-11-21 14:00:47,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9500 conditions, 5508 events. 1178/5508 cut-off events. For 3531/3536 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 65759 event pairs, 366 based on Foata normal form. 14/3994 useless extension candidates. Maximal degree in co-relation 9361. Up to 1118 conditions per place. [2022-11-21 14:00:47,795 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 58 selfloop transitions, 15 changer transitions 1/359 dead transitions. [2022-11-21 14:00:47,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 359 transitions, 1594 flow [2022-11-21 14:00:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:00:47,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 14:00:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1843 transitions. [2022-11-21 14:00:47,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.835827664399093 [2022-11-21 14:00:47,799 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1843 transitions. [2022-11-21 14:00:47,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1843 transitions. [2022-11-21 14:00:47,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:47,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1843 transitions. [2022-11-21 14:00:47,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.2857142857143) internal successors, (1843), 7 states have internal predecessors, (1843), 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) [2022-11-21 14:00:47,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 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) [2022-11-21 14:00:47,808 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 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) [2022-11-21 14:00:47,809 INFO L175 Difference]: Start difference. First operand has 395 places, 349 transitions, 1422 flow. Second operand 7 states and 1843 transitions. [2022-11-21 14:00:47,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 359 transitions, 1594 flow [2022-11-21 14:00:47,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 359 transitions, 1576 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-21 14:00:47,835 INFO L231 Difference]: Finished difference. Result has 401 places, 353 transitions, 1481 flow [2022-11-21 14:00:47,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1481, PETRI_PLACES=401, PETRI_TRANSITIONS=353} [2022-11-21 14:00:47,837 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 121 predicate places. [2022-11-21 14:00:47,837 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 353 transitions, 1481 flow [2022-11-21 14:00:47,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 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) [2022-11-21 14:00:47,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:47,838 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:47,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 14:00:47,839 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:47,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:47,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1100997573, now seen corresponding path program 1 times [2022-11-21 14:00:47,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:47,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075379870] [2022-11-21 14:00:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:47,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:47,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:47,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075379870] [2022-11-21 14:00:47,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075379870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:47,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:47,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:47,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029443384] [2022-11-21 14:00:47,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:47,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:00:47,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:47,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:00:47,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:00:48,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-21 14:00:48,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 353 transitions, 1481 flow. Second operand has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 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) [2022-11-21 14:00:48,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:48,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-21 14:00:48,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:50,098 INFO L130 PetriNetUnfolder]: 1130/5446 cut-off events. [2022-11-21 14:00:50,098 INFO L131 PetriNetUnfolder]: For 4324/4329 co-relation queries the response was YES. [2022-11-21 14:00:50,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9769 conditions, 5446 events. 1130/5446 cut-off events. For 4324/4329 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 64188 event pairs, 306 based on Foata normal form. 14/4042 useless extension candidates. Maximal degree in co-relation 9628. Up to 1196 conditions per place. [2022-11-21 14:00:50,169 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 71 selfloop transitions, 17 changer transitions 1/374 dead transitions. [2022-11-21 14:00:50,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 374 transitions, 1749 flow [2022-11-21 14:00:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:00:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 14:00:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1851 transitions. [2022-11-21 14:00:50,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8394557823129252 [2022-11-21 14:00:50,172 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1851 transitions. [2022-11-21 14:00:50,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1851 transitions. [2022-11-21 14:00:50,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:50,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1851 transitions. [2022-11-21 14:00:50,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 264.42857142857144) internal successors, (1851), 7 states have internal predecessors, (1851), 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) [2022-11-21 14:00:50,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 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) [2022-11-21 14:00:50,179 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 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) [2022-11-21 14:00:50,179 INFO L175 Difference]: Start difference. First operand has 401 places, 353 transitions, 1481 flow. Second operand 7 states and 1851 transitions. [2022-11-21 14:00:50,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 374 transitions, 1749 flow [2022-11-21 14:00:50,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 374 transitions, 1738 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 14:00:50,203 INFO L231 Difference]: Finished difference. Result has 411 places, 360 transitions, 1581 flow [2022-11-21 14:00:50,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1581, PETRI_PLACES=411, PETRI_TRANSITIONS=360} [2022-11-21 14:00:50,204 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 131 predicate places. [2022-11-21 14:00:50,204 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 360 transitions, 1581 flow [2022-11-21 14:00:50,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 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) [2022-11-21 14:00:50,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:50,205 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:50,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 14:00:50,206 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:50,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:50,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1863572148, now seen corresponding path program 1 times [2022-11-21 14:00:50,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:50,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415454621] [2022-11-21 14:00:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:50,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:50,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:50,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415454621] [2022-11-21 14:00:50,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415454621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:50,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:50,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:00:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517205243] [2022-11-21 14:00:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:50,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:00:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:00:50,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:00:50,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 315 [2022-11-21 14:00:50,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 360 transitions, 1581 flow. Second operand has 8 states, 8 states have (on average 252.5) internal successors, (2020), 8 states have internal predecessors, (2020), 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) [2022-11-21 14:00:50,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:50,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 315 [2022-11-21 14:00:50,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:52,276 INFO L130 PetriNetUnfolder]: 342/3093 cut-off events. [2022-11-21 14:00:52,276 INFO L131 PetriNetUnfolder]: For 2350/2350 co-relation queries the response was YES. [2022-11-21 14:00:52,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 3093 events. 342/3093 cut-off events. For 2350/2350 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 24020 event pairs, 4 based on Foata normal form. 0/2770 useless extension candidates. Maximal degree in co-relation 5142. Up to 267 conditions per place. [2022-11-21 14:00:52,471 INFO L137 encePairwiseOnDemand]: 299/315 looper letters, 152 selfloop transitions, 49 changer transitions 0/483 dead transitions. [2022-11-21 14:00:52,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 483 transitions, 2586 flow [2022-11-21 14:00:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 14:00:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 14:00:52,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4661 transitions. [2022-11-21 14:00:52,476 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8220458553791887 [2022-11-21 14:00:52,476 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4661 transitions. [2022-11-21 14:00:52,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4661 transitions. [2022-11-21 14:00:52,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:52,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4661 transitions. [2022-11-21 14:00:52,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 258.94444444444446) internal successors, (4661), 18 states have internal predecessors, (4661), 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) [2022-11-21 14:00:52,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 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) [2022-11-21 14:00:52,492 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 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) [2022-11-21 14:00:52,492 INFO L175 Difference]: Start difference. First operand has 411 places, 360 transitions, 1581 flow. Second operand 18 states and 4661 transitions. [2022-11-21 14:00:52,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 483 transitions, 2586 flow [2022-11-21 14:00:52,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 483 transitions, 2576 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 14:00:52,519 INFO L231 Difference]: Finished difference. Result has 434 places, 390 transitions, 1880 flow [2022-11-21 14:00:52,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1880, PETRI_PLACES=434, PETRI_TRANSITIONS=390} [2022-11-21 14:00:52,520 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 154 predicate places. [2022-11-21 14:00:52,520 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 390 transitions, 1880 flow [2022-11-21 14:00:52,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 252.5) internal successors, (2020), 8 states have internal predecessors, (2020), 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) [2022-11-21 14:00:52,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:52,522 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:52,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 14:00:52,522 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:52,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1936160917, now seen corresponding path program 1 times [2022-11-21 14:00:52,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:52,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612461325] [2022-11-21 14:00:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:52,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:52,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:52,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612461325] [2022-11-21 14:00:52,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612461325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:52,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:52,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:00:52,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903848116] [2022-11-21 14:00:52,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:52,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:00:52,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:52,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:00:52,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:00:52,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-21 14:00:52,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 390 transitions, 1880 flow. Second operand has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 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) [2022-11-21 14:00:52,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:52,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-21 14:00:52,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:55,722 INFO L130 PetriNetUnfolder]: 351/6678 cut-off events. [2022-11-21 14:00:55,723 INFO L131 PetriNetUnfolder]: For 4915/4915 co-relation queries the response was YES. [2022-11-21 14:00:56,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11815 conditions, 6678 events. 351/6678 cut-off events. For 4915/4915 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 63382 event pairs, 84 based on Foata normal form. 24/5905 useless extension candidates. Maximal degree in co-relation 11442. Up to 290 conditions per place. [2022-11-21 14:00:56,217 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 37 selfloop transitions, 7 changer transitions 0/403 dead transitions. [2022-11-21 14:00:56,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 403 transitions, 2007 flow [2022-11-21 14:00:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:00:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 14:00:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-21 14:00:56,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-21 14:00:56,219 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-21 14:00:56,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-21 14:00:56,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:56,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-21 14:00:56,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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) [2022-11-21 14:00:56,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:56,222 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:00:56,222 INFO L175 Difference]: Start difference. First operand has 434 places, 390 transitions, 1880 flow. Second operand 4 states and 1140 transitions. [2022-11-21 14:00:56,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 403 transitions, 2007 flow [2022-11-21 14:00:56,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 403 transitions, 1979 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-11-21 14:00:56,263 INFO L231 Difference]: Finished difference. Result has 438 places, 393 transitions, 1908 flow [2022-11-21 14:00:56,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1908, PETRI_PLACES=438, PETRI_TRANSITIONS=393} [2022-11-21 14:00:56,264 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 158 predicate places. [2022-11-21 14:00:56,264 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 393 transitions, 1908 flow [2022-11-21 14:00:56,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 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) [2022-11-21 14:00:56,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:56,265 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:56,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 14:00:56,265 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:00:56,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1407132334, now seen corresponding path program 1 times [2022-11-21 14:00:56,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:56,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107969285] [2022-11-21 14:00:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:56,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:56,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:56,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107969285] [2022-11-21 14:00:56,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107969285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:56,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:56,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:00:56,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969780395] [2022-11-21 14:00:56,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:56,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:00:56,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:56,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:00:56,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:00:56,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-21 14:00:56,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 393 transitions, 1908 flow. Second operand has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 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) [2022-11-21 14:00:56,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:56,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-21 14:00:56,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:59,709 INFO L130 PetriNetUnfolder]: 308/4710 cut-off events. [2022-11-21 14:00:59,709 INFO L131 PetriNetUnfolder]: For 4491/4491 co-relation queries the response was YES. [2022-11-21 14:01:00,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10067 conditions, 4710 events. 308/4710 cut-off events. For 4491/4491 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 40211 event pairs, 1 based on Foata normal form. 2/4379 useless extension candidates. Maximal degree in co-relation 9458. Up to 291 conditions per place. [2022-11-21 14:01:00,212 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 79 selfloop transitions, 22 changer transitions 0/442 dead transitions. [2022-11-21 14:01:00,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 442 transitions, 2346 flow [2022-11-21 14:01:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:01:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 14:01:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2230 transitions. [2022-11-21 14:01:00,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8849206349206349 [2022-11-21 14:01:00,216 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2230 transitions. [2022-11-21 14:01:00,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2230 transitions. [2022-11-21 14:01:00,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:01:00,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2230 transitions. [2022-11-21 14:01:00,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 278.75) internal successors, (2230), 8 states have internal predecessors, (2230), 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) [2022-11-21 14:01:00,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:01:00,224 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:01:00,224 INFO L175 Difference]: Start difference. First operand has 438 places, 393 transitions, 1908 flow. Second operand 8 states and 2230 transitions. [2022-11-21 14:01:00,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 442 transitions, 2346 flow [2022-11-21 14:01:00,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 442 transitions, 2346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 14:01:00,269 INFO L231 Difference]: Finished difference. Result has 451 places, 409 transitions, 2144 flow [2022-11-21 14:01:00,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2144, PETRI_PLACES=451, PETRI_TRANSITIONS=409} [2022-11-21 14:01:00,270 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 171 predicate places. [2022-11-21 14:01:00,271 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 409 transitions, 2144 flow [2022-11-21 14:01:00,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 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) [2022-11-21 14:01:00,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:01:00,271 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:01:00,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 14:01:00,272 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:01:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:00,272 INFO L85 PathProgramCache]: Analyzing trace with hash 578206890, now seen corresponding path program 1 times [2022-11-21 14:01:00,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:01:00,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631974181] [2022-11-21 14:01:00,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:00,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:01:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:00,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:01:00,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631974181] [2022-11-21 14:01:00,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631974181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:01:00,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:01:00,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:01:00,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345331022] [2022-11-21 14:01:00,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:01:00,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:01:00,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:01:00,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:01:00,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:01:00,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 315 [2022-11-21 14:01:00,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 409 transitions, 2144 flow. Second operand has 8 states, 8 states have (on average 252.625) internal successors, (2021), 8 states have internal predecessors, (2021), 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) [2022-11-21 14:01:00,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:01:00,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 315 [2022-11-21 14:01:00,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:01:13,461 INFO L130 PetriNetUnfolder]: 5007/21126 cut-off events. [2022-11-21 14:01:13,462 INFO L131 PetriNetUnfolder]: For 20871/20887 co-relation queries the response was YES. [2022-11-21 14:01:14,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43108 conditions, 21126 events. 5007/21126 cut-off events. For 20871/20887 co-relation queries the response was YES. Maximal size of possible extension queue 3788. Compared 333107 event pairs, 34 based on Foata normal form. 0/15408 useless extension candidates. Maximal degree in co-relation 42936. Up to 4607 conditions per place. [2022-11-21 14:01:14,373 INFO L137 encePairwiseOnDemand]: 299/315 looper letters, 147 selfloop transitions, 41 changer transitions 0/523 dead transitions. [2022-11-21 14:01:14,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 523 transitions, 3046 flow [2022-11-21 14:01:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 14:01:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 14:01:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4659 transitions. [2022-11-21 14:01:14,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216931216931217 [2022-11-21 14:01:14,379 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4659 transitions. [2022-11-21 14:01:14,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4659 transitions. [2022-11-21 14:01:14,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:01:14,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4659 transitions. [2022-11-21 14:01:14,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 258.8333333333333) internal successors, (4659), 18 states have internal predecessors, (4659), 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) [2022-11-21 14:01:14,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 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) [2022-11-21 14:01:14,396 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 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) [2022-11-21 14:01:14,396 INFO L175 Difference]: Start difference. First operand has 451 places, 409 transitions, 2144 flow. Second operand 18 states and 4659 transitions. [2022-11-21 14:01:14,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 523 transitions, 3046 flow [2022-11-21 14:01:14,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 523 transitions, 3036 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-21 14:01:14,488 INFO L231 Difference]: Finished difference. Result has 473 places, 435 transitions, 2385 flow [2022-11-21 14:01:14,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2385, PETRI_PLACES=473, PETRI_TRANSITIONS=435} [2022-11-21 14:01:14,489 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 193 predicate places. [2022-11-21 14:01:14,489 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 435 transitions, 2385 flow [2022-11-21 14:01:14,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 252.625) internal successors, (2021), 8 states have internal predecessors, (2021), 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) [2022-11-21 14:01:14,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:01:14,490 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:01:14,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 14:01:14,490 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:01:14,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:14,491 INFO L85 PathProgramCache]: Analyzing trace with hash 744545343, now seen corresponding path program 1 times [2022-11-21 14:01:14,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:01:14,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825627545] [2022-11-21 14:01:14,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:14,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:01:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:14,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:01:14,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825627545] [2022-11-21 14:01:14,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825627545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:01:14,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:01:14,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:01:14,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781302929] [2022-11-21 14:01:14,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:01:14,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:01:14,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:01:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:01:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:01:14,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-21 14:01:14,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 435 transitions, 2385 flow. Second operand has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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) [2022-11-21 14:01:14,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:01:14,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-21 14:01:14,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:01:30,081 INFO L130 PetriNetUnfolder]: 3551/26366 cut-off events. [2022-11-21 14:01:30,081 INFO L131 PetriNetUnfolder]: For 25746/25762 co-relation queries the response was YES. [2022-11-21 14:01:31,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52040 conditions, 26366 events. 3551/26366 cut-off events. For 25746/25762 co-relation queries the response was YES. Maximal size of possible extension queue 2444. Compared 427500 event pairs, 1428 based on Foata normal form. 216/21443 useless extension candidates. Maximal degree in co-relation 51862. Up to 3194 conditions per place. [2022-11-21 14:01:31,351 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 36 selfloop transitions, 7 changer transitions 0/447 dead transitions. [2022-11-21 14:01:31,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 447 transitions, 2505 flow [2022-11-21 14:01:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:01:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 14:01:31,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1139 transitions. [2022-11-21 14:01:31,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.903968253968254 [2022-11-21 14:01:31,353 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1139 transitions. [2022-11-21 14:01:31,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1139 transitions. [2022-11-21 14:01:31,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:01:31,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1139 transitions. [2022-11-21 14:01:31,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 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) [2022-11-21 14:01:31,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:01:31,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 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) [2022-11-21 14:01:31,356 INFO L175 Difference]: Start difference. First operand has 473 places, 435 transitions, 2385 flow. Second operand 4 states and 1139 transitions. [2022-11-21 14:01:31,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 447 transitions, 2505 flow [2022-11-21 14:01:31,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 447 transitions, 2485 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-21 14:01:31,574 INFO L231 Difference]: Finished difference. Result has 477 places, 438 transitions, 2421 flow [2022-11-21 14:01:31,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2421, PETRI_PLACES=477, PETRI_TRANSITIONS=438} [2022-11-21 14:01:31,575 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 197 predicate places. [2022-11-21 14:01:31,575 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 438 transitions, 2421 flow [2022-11-21 14:01:31,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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) [2022-11-21 14:01:31,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:01:31,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:01:31,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 14:01:31,576 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:01:31,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:31,577 INFO L85 PathProgramCache]: Analyzing trace with hash 585474242, now seen corresponding path program 1 times [2022-11-21 14:01:31,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:01:31,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007862953] [2022-11-21 14:01:31,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:31,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:01:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:31,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:01:31,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007862953] [2022-11-21 14:01:31,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007862953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:01:31,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:01:31,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:01:31,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641701975] [2022-11-21 14:01:31,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:01:31,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:01:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:01:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:01:31,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:01:31,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-21 14:01:31,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 438 transitions, 2421 flow. Second operand has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 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) [2022-11-21 14:01:31,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:01:31,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-21 14:01:31,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:01:56,961 INFO L130 PetriNetUnfolder]: 4362/40131 cut-off events. [2022-11-21 14:01:56,961 INFO L131 PetriNetUnfolder]: For 43257/43273 co-relation queries the response was YES. [2022-11-21 14:01:59,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84785 conditions, 40131 events. 4362/40131 cut-off events. For 43257/43273 co-relation queries the response was YES. Maximal size of possible extension queue 2969. Compared 674117 event pairs, 17 based on Foata normal form. 18/34408 useless extension candidates. Maximal degree in co-relation 84599. Up to 3638 conditions per place. [2022-11-21 14:01:59,402 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 76 selfloop transitions, 22 changer transitions 0/484 dead transitions. [2022-11-21 14:01:59,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 484 transitions, 2839 flow [2022-11-21 14:01:59,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:01:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 14:01:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2227 transitions. [2022-11-21 14:01:59,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8837301587301587 [2022-11-21 14:01:59,405 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2227 transitions. [2022-11-21 14:01:59,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2227 transitions. [2022-11-21 14:01:59,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:01:59,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2227 transitions. [2022-11-21 14:01:59,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 278.375) internal successors, (2227), 8 states have internal predecessors, (2227), 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) [2022-11-21 14:01:59,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:01:59,412 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-11-21 14:01:59,412 INFO L175 Difference]: Start difference. First operand has 477 places, 438 transitions, 2421 flow. Second operand 8 states and 2227 transitions. [2022-11-21 14:01:59,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 484 transitions, 2839 flow [2022-11-21 14:01:59,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 484 transitions, 2839 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 14:01:59,639 INFO L231 Difference]: Finished difference. Result has 490 places, 454 transitions, 2657 flow [2022-11-21 14:01:59,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=2421, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2657, PETRI_PLACES=490, PETRI_TRANSITIONS=454} [2022-11-21 14:01:59,641 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 210 predicate places. [2022-11-21 14:01:59,641 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 454 transitions, 2657 flow [2022-11-21 14:01:59,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 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) [2022-11-21 14:01:59,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:01:59,642 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:01:59,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 14:01:59,642 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-21 14:01:59,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:59,643 INFO L85 PathProgramCache]: Analyzing trace with hash 315024438, now seen corresponding path program 1 times [2022-11-21 14:01:59,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:01:59,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402145000] [2022-11-21 14:01:59,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:59,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:01:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:01:59,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:01:59,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402145000] [2022-11-21 14:01:59,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402145000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:01:59,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:01:59,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:01:59,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165446175] [2022-11-21 14:01:59,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:01:59,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:01:59,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:01:59,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:01:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:01:59,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 315 [2022-11-21 14:01:59,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 454 transitions, 2657 flow. Second operand has 8 states, 8 states have (on average 252.75) internal successors, (2022), 8 states have internal predecessors, (2022), 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) [2022-11-21 14:01:59,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:01:59,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 315 [2022-11-21 14:01:59,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand