./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 251696ec6cec82b3ac56ff493f8f4412eaff7e5010650cc9da1e4c426de80d8c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:23:15,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:23:15,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:23:16,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:23:16,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:23:16,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:23:16,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:23:16,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:23:16,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:23:16,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:23:16,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:23:16,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:23:16,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:23:16,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:23:16,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:23:16,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:23:16,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:23:16,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:23:16,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:23:16,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:23:16,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:23:16,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:23:16,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:23:16,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:23:16,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:23:16,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:23:16,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:23:16,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:23:16,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:23:16,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:23:16,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:23:16,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:23:16,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:23:16,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:23:16,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:23:16,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:23:16,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:23:16,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:23:16,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:23:16,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:23:16,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:23:16,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:23:16,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:23:16,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:23:16,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:23:16,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:23:16,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:23:16,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:23:16,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:23:16,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:23:16,117 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:23:16,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:23:16,119 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:23:16,119 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:23:16,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:23:16,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:23:16,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:23:16,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:23:16,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:23:16,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:23:16,121 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:23:16,122 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:23:16,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:23:16,122 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:23:16,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:23:16,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:23:16,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:23:16,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:23:16,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:23:16,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:23:16,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:23:16,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:23:16,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:23:16,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:23:16,127 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:23:16,128 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:23:16,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:23:16,128 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_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 251696ec6cec82b3ac56ff493f8f4412eaff7e5010650cc9da1e4c426de80d8c [2022-11-16 12:23:16,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:23:16,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:23:16,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:23:16,497 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:23:16,500 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:23:16,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2022-11-16 12:23:16,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/data/8ad9738e6/ff415faa4fd04e669cc1e87400d5898e/FLAG7c95eb7fd [2022-11-16 12:23:17,173 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:23:17,174 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2022-11-16 12:23:17,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/data/8ad9738e6/ff415faa4fd04e669cc1e87400d5898e/FLAG7c95eb7fd [2022-11-16 12:23:17,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/data/8ad9738e6/ff415faa4fd04e669cc1e87400d5898e [2022-11-16 12:23:17,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:23:17,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:23:17,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:23:17,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:23:17,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:23:17,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:17" (1/1) ... [2022-11-16 12:23:17,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24eb2f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:17, skipping insertion in model container [2022-11-16 12:23:17,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:17" (1/1) ... [2022-11-16 12:23:17,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:23:17,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:23:17,956 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2022-11-16 12:23:17,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:23:17,982 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:23:18,026 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2022-11-16 12:23:18,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:23:18,046 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:23:18,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18 WrapperNode [2022-11-16 12:23:18,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:23:18,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:23:18,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:23:18,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:23:18,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (1/1) ... [2022-11-16 12:23:18,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (1/1) ... [2022-11-16 12:23:18,094 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-11-16 12:23:18,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:23:18,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:23:18,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:23:18,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:23:18,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (1/1) ... [2022-11-16 12:23:18,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (1/1) ... [2022-11-16 12:23:18,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (1/1) ... [2022-11-16 12:23:18,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (1/1) ... [2022-11-16 12:23:18,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (1/1) ... [2022-11-16 12:23:18,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (1/1) ... [2022-11-16 12:23:18,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (1/1) ... [2022-11-16 12:23:18,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (1/1) ... [2022-11-16 12:23:18,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:23:18,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:23:18,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:23:18,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:23:18,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (1/1) ... [2022-11-16 12:23:18,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:23:18,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:18,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:23:18,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:23:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:23:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:23:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:23:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:23:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:23:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:23:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:23:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:23:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:23:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:23:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:23:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:23:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:23:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:23:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:23:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:23:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:23:18,233 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:23:18,394 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:23:18,397 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:23:18,744 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:23:18,910 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:23:18,912 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:23:18,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:18 BoogieIcfgContainer [2022-11-16 12:23:18,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:23:18,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:23:18,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:23:18,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:23:18,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:23:17" (1/3) ... [2022-11-16 12:23:18,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102ef191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:18, skipping insertion in model container [2022-11-16 12:23:18,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:18" (2/3) ... [2022-11-16 12:23:18,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102ef191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:18, skipping insertion in model container [2022-11-16 12:23:18,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:18" (3/3) ... [2022-11-16 12:23:18,929 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2022-11-16 12:23:18,960 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:23:18,974 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:23:18,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 12:23:18,974 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:23:19,110 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:23:19,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 169 transitions, 362 flow [2022-11-16 12:23:19,336 INFO L130 PetriNetUnfolder]: 12/166 cut-off events. [2022-11-16 12:23:19,336 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:23:19,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 12/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2022-11-16 12:23:19,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 169 transitions, 362 flow [2022-11-16 12:23:19,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 145 transitions, 305 flow [2022-11-16 12:23:19,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:23:19,373 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;@3bf1b68f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:23:19,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 12:23:19,394 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-16 12:23:19,394 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:23:19,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:19,395 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:19,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:19,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:19,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1292207454, now seen corresponding path program 1 times [2022-11-16 12:23:19,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:19,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125689956] [2022-11-16 12:23:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:19,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:20,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:20,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125689956] [2022-11-16 12:23:20,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125689956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:20,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:20,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:20,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098499617] [2022-11-16 12:23:20,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:20,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:20,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:20,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:20,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 169 [2022-11-16 12:23:20,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 145 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:20,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 169 [2022-11-16 12:23:20,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:20,387 INFO L130 PetriNetUnfolder]: 79/584 cut-off events. [2022-11-16 12:23:20,387 INFO L131 PetriNetUnfolder]: For 86/88 co-relation queries the response was YES. [2022-11-16 12:23:20,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 584 events. 79/584 cut-off events. For 86/88 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2905 event pairs, 30 based on Foata normal form. 72/536 useless extension candidates. Maximal degree in co-relation 286. Up to 69 conditions per place. [2022-11-16 12:23:20,404 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 32 selfloop transitions, 4 changer transitions 3/154 dead transitions. [2022-11-16 12:23:20,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 154 transitions, 410 flow [2022-11-16 12:23:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:23:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 745 transitions. [2022-11-16 12:23:20,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8816568047337278 [2022-11-16 12:23:20,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 745 transitions. [2022-11-16 12:23:20,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 745 transitions. [2022-11-16 12:23:20,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:20,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 745 transitions. [2022-11-16 12:23:20,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,467 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,469 INFO L175 Difference]: Start difference. First operand has 144 places, 145 transitions, 305 flow. Second operand 5 states and 745 transitions. [2022-11-16 12:23:20,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 154 transitions, 410 flow [2022-11-16 12:23:20,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 154 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:23:20,483 INFO L231 Difference]: Finished difference. Result has 146 places, 138 transitions, 306 flow [2022-11-16 12:23:20,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=146, PETRI_TRANSITIONS=138} [2022-11-16 12:23:20,490 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 2 predicate places. [2022-11-16 12:23:20,490 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 306 flow [2022-11-16 12:23:20,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:20,492 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:20,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:23:20,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:20,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash 409741581, now seen corresponding path program 1 times [2022-11-16 12:23:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:20,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461716291] [2022-11-16 12:23:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:20,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:20,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:20,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461716291] [2022-11-16 12:23:20,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461716291] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:20,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251509073] [2022-11-16 12:23:20,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:20,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:20,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:20,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:20,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:23:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:21,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:23:21,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:21,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:21,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251509073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:21,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:21,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:23:21,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593981235] [2022-11-16 12:23:21,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:21,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:23:21,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:21,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:23:21,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:21,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 169 [2022-11-16 12:23:21,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 306 flow. Second operand has 12 states, 12 states have (on average 141.66666666666666) internal successors, (1700), 12 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:21,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:21,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 169 [2022-11-16 12:23:21,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:21,922 INFO L130 PetriNetUnfolder]: 196/1377 cut-off events. [2022-11-16 12:23:21,923 INFO L131 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2022-11-16 12:23:21,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 1377 events. 196/1377 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9113 event pairs, 75 based on Foata normal form. 3/1095 useless extension candidates. Maximal degree in co-relation 1384. Up to 70 conditions per place. [2022-11-16 12:23:21,939 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 68 selfloop transitions, 18 changer transitions 0/201 dead transitions. [2022-11-16 12:23:21,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 201 transitions, 650 flow [2022-11-16 12:23:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:23:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:23:21,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2591 transitions. [2022-11-16 12:23:21,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8517422748191978 [2022-11-16 12:23:21,947 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2591 transitions. [2022-11-16 12:23:21,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2591 transitions. [2022-11-16 12:23:21,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:21,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2591 transitions. [2022-11-16 12:23:21,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 143.94444444444446) internal successors, (2591), 18 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:21,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:21,966 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:21,966 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 306 flow. Second operand 18 states and 2591 transitions. [2022-11-16 12:23:21,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 201 transitions, 650 flow [2022-11-16 12:23:21,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 201 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:23:21,975 INFO L231 Difference]: Finished difference. Result has 163 places, 150 transitions, 410 flow [2022-11-16 12:23:21,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=410, PETRI_PLACES=163, PETRI_TRANSITIONS=150} [2022-11-16 12:23:21,977 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 19 predicate places. [2022-11-16 12:23:21,977 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 150 transitions, 410 flow [2022-11-16 12:23:21,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 141.66666666666666) internal successors, (1700), 12 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:21,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:21,979 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:21,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:22,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:22,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:22,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:22,188 INFO L85 PathProgramCache]: Analyzing trace with hash -182912557, now seen corresponding path program 1 times [2022-11-16 12:23:22,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:22,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983886819] [2022-11-16 12:23:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:22,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:22,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:22,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983886819] [2022-11-16 12:23:22,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983886819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:22,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001591649] [2022-11-16 12:23:22,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:22,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:22,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:22,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:22,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:23:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:22,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:23:22,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:22,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:22,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001591649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:22,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:22,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:23:22,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208172873] [2022-11-16 12:23:22,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:22,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:23:22,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:23:22,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:22,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 169 [2022-11-16 12:23:22,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 150 transitions, 410 flow. Second operand has 6 states, 6 states have (on average 141.33333333333334) internal successors, (848), 6 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:22,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:22,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 169 [2022-11-16 12:23:22,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:22,995 INFO L130 PetriNetUnfolder]: 196/1373 cut-off events. [2022-11-16 12:23:22,995 INFO L131 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2022-11-16 12:23:23,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 1373 events. 196/1373 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9044 event pairs, 75 based on Foata normal form. 4/1092 useless extension candidates. Maximal degree in co-relation 1428. Up to 240 conditions per place. [2022-11-16 12:23:23,007 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 33 selfloop transitions, 11 changer transitions 0/159 dead transitions. [2022-11-16 12:23:23,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 159 transitions, 505 flow [2022-11-16 12:23:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:23:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:23:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1009 transitions. [2022-11-16 12:23:23,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.852916314454776 [2022-11-16 12:23:23,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1009 transitions. [2022-11-16 12:23:23,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1009 transitions. [2022-11-16 12:23:23,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:23,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1009 transitions. [2022-11-16 12:23:23,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,017 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,017 INFO L175 Difference]: Start difference. First operand has 163 places, 150 transitions, 410 flow. Second operand 7 states and 1009 transitions. [2022-11-16 12:23:23,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 159 transitions, 505 flow [2022-11-16 12:23:23,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 159 transitions, 473 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 12:23:23,027 INFO L231 Difference]: Finished difference. Result has 159 places, 146 transitions, 373 flow [2022-11-16 12:23:23,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=159, PETRI_TRANSITIONS=146} [2022-11-16 12:23:23,029 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 15 predicate places. [2022-11-16 12:23:23,030 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 146 transitions, 373 flow [2022-11-16 12:23:23,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.33333333333334) internal successors, (848), 6 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:23,031 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] [2022-11-16 12:23:23,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:23,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:23,236 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:23,237 INFO L85 PathProgramCache]: Analyzing trace with hash -942841033, now seen corresponding path program 1 times [2022-11-16 12:23:23,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:23,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804585119] [2022-11-16 12:23:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:23,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:23,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:23,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804585119] [2022-11-16 12:23:23,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804585119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:23,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:23,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:23,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220122774] [2022-11-16 12:23:23,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:23,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:23,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:23,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-16 12:23:23,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 146 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:23,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-16 12:23:23,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:24,379 INFO L130 PetriNetUnfolder]: 1201/4528 cut-off events. [2022-11-16 12:23:24,380 INFO L131 PetriNetUnfolder]: For 102/132 co-relation queries the response was YES. [2022-11-16 12:23:24,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 4528 events. 1201/4528 cut-off events. For 102/132 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 40986 event pairs, 515 based on Foata normal form. 5/3638 useless extension candidates. Maximal degree in co-relation 5504. Up to 1081 conditions per place. [2022-11-16 12:23:24,428 INFO L137 encePairwiseOnDemand]: 163/169 looper letters, 36 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2022-11-16 12:23:24,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 168 transitions, 508 flow [2022-11-16 12:23:24,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:23:24,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 747 transitions. [2022-11-16 12:23:24,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8840236686390532 [2022-11-16 12:23:24,431 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 747 transitions. [2022-11-16 12:23:24,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 747 transitions. [2022-11-16 12:23:24,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:24,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 747 transitions. [2022-11-16 12:23:24,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,437 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,437 INFO L175 Difference]: Start difference. First operand has 159 places, 146 transitions, 373 flow. Second operand 5 states and 747 transitions. [2022-11-16 12:23:24,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 168 transitions, 508 flow [2022-11-16 12:23:24,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 168 transitions, 494 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:23:24,443 INFO L231 Difference]: Finished difference. Result has 161 places, 149 transitions, 389 flow [2022-11-16 12:23:24,443 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=161, PETRI_TRANSITIONS=149} [2022-11-16 12:23:24,444 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 17 predicate places. [2022-11-16 12:23:24,445 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 149 transitions, 389 flow [2022-11-16 12:23:24,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:24,446 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] [2022-11-16 12:23:24,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:23:24,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:24,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1503184433, now seen corresponding path program 1 times [2022-11-16 12:23:24,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:24,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189593612] [2022-11-16 12:23:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:24,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:24,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:24,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189593612] [2022-11-16 12:23:24,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189593612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:24,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:24,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:24,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897940879] [2022-11-16 12:23:24,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:24,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:24,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:24,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:24,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:24,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-16 12:23:24,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 149 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:24,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-16 12:23:24,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:26,035 INFO L130 PetriNetUnfolder]: 2181/6393 cut-off events. [2022-11-16 12:23:26,038 INFO L131 PetriNetUnfolder]: For 482/487 co-relation queries the response was YES. [2022-11-16 12:23:26,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10643 conditions, 6393 events. 2181/6393 cut-off events. For 482/487 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 62157 event pairs, 1095 based on Foata normal form. 0/5318 useless extension candidates. Maximal degree in co-relation 8503. Up to 2031 conditions per place. [2022-11-16 12:23:26,124 INFO L137 encePairwiseOnDemand]: 163/169 looper letters, 35 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2022-11-16 12:23:26,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 170 transitions, 519 flow [2022-11-16 12:23:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:23:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2022-11-16 12:23:26,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8828402366863906 [2022-11-16 12:23:26,128 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2022-11-16 12:23:26,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2022-11-16 12:23:26,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:26,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2022-11-16 12:23:26,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,133 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,134 INFO L175 Difference]: Start difference. First operand has 161 places, 149 transitions, 389 flow. Second operand 5 states and 746 transitions. [2022-11-16 12:23:26,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 170 transitions, 519 flow [2022-11-16 12:23:26,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 170 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:23:26,142 INFO L231 Difference]: Finished difference. Result has 167 places, 152 transitions, 417 flow [2022-11-16 12:23:26,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=167, PETRI_TRANSITIONS=152} [2022-11-16 12:23:26,145 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 23 predicate places. [2022-11-16 12:23:26,146 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 152 transitions, 417 flow [2022-11-16 12:23:26,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:26,147 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:26,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:23:26,147 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:26,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:26,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1702804560, now seen corresponding path program 1 times [2022-11-16 12:23:26,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:26,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272950494] [2022-11-16 12:23:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:26,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:26,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:26,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272950494] [2022-11-16 12:23:26,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272950494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:26,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647379425] [2022-11-16 12:23:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:26,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:26,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:26,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:26,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:23:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:26,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:23:26,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:23:26,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:26,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647379425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:26,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:26,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-16 12:23:26,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299386093] [2022-11-16 12:23:26,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:26,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:23:26,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:23:26,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:23:26,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 169 [2022-11-16 12:23:26,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 152 transitions, 417 flow. Second operand has 7 states, 7 states have (on average 131.57142857142858) internal successors, (921), 7 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:26,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 169 [2022-11-16 12:23:26,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:28,108 INFO L130 PetriNetUnfolder]: 1933/7429 cut-off events. [2022-11-16 12:23:28,108 INFO L131 PetriNetUnfolder]: For 1028/1028 co-relation queries the response was YES. [2022-11-16 12:23:28,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12946 conditions, 7429 events. 1933/7429 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 76113 event pairs, 1236 based on Foata normal form. 0/6127 useless extension candidates. Maximal degree in co-relation 12248. Up to 2609 conditions per place. [2022-11-16 12:23:28,183 INFO L137 encePairwiseOnDemand]: 160/169 looper letters, 53 selfloop transitions, 8 changer transitions 0/173 dead transitions. [2022-11-16 12:23:28,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 173 transitions, 592 flow [2022-11-16 12:23:28,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:23:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:23:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1086 transitions. [2022-11-16 12:23:28,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8032544378698225 [2022-11-16 12:23:28,187 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1086 transitions. [2022-11-16 12:23:28,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1086 transitions. [2022-11-16 12:23:28,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:28,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1086 transitions. [2022-11-16 12:23:28,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 135.75) internal successors, (1086), 8 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:28,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:28,195 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:28,195 INFO L175 Difference]: Start difference. First operand has 167 places, 152 transitions, 417 flow. Second operand 8 states and 1086 transitions. [2022-11-16 12:23:28,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 173 transitions, 592 flow [2022-11-16 12:23:28,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:23:28,225 INFO L231 Difference]: Finished difference. Result has 176 places, 154 transitions, 449 flow [2022-11-16 12:23:28,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=449, PETRI_PLACES=176, PETRI_TRANSITIONS=154} [2022-11-16 12:23:28,228 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 32 predicate places. [2022-11-16 12:23:28,228 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 154 transitions, 449 flow [2022-11-16 12:23:28,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.57142857142858) internal successors, (921), 7 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:28,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:28,229 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] [2022-11-16 12:23:28,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:28,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:23:28,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:28,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:28,436 INFO L85 PathProgramCache]: Analyzing trace with hash 585312722, now seen corresponding path program 1 times [2022-11-16 12:23:28,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:28,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482828063] [2022-11-16 12:23:28,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:28,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:28,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482828063] [2022-11-16 12:23:28,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482828063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:28,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:28,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:23:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850215796] [2022-11-16 12:23:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:28,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:23:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:28,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:23:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:28,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 169 [2022-11-16 12:23:28,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 154 transitions, 449 flow. Second operand has 8 states, 8 states have (on average 126.375) internal successors, (1011), 8 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:28,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:28,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 169 [2022-11-16 12:23:28,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:30,007 INFO L130 PetriNetUnfolder]: 2394/5544 cut-off events. [2022-11-16 12:23:30,007 INFO L131 PetriNetUnfolder]: For 971/1004 co-relation queries the response was YES. [2022-11-16 12:23:30,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10737 conditions, 5544 events. 2394/5544 cut-off events. For 971/1004 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 48798 event pairs, 1912 based on Foata normal form. 33/4655 useless extension candidates. Maximal degree in co-relation 9905. Up to 3377 conditions per place. [2022-11-16 12:23:30,087 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 70 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2022-11-16 12:23:30,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 192 transitions, 705 flow [2022-11-16 12:23:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:23:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:23:30,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1441 transitions. [2022-11-16 12:23:30,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7751479289940828 [2022-11-16 12:23:30,093 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1441 transitions. [2022-11-16 12:23:30,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1441 transitions. [2022-11-16 12:23:30,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:30,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1441 transitions. [2022-11-16 12:23:30,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:30,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:30,103 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:30,104 INFO L175 Difference]: Start difference. First operand has 176 places, 154 transitions, 449 flow. Second operand 11 states and 1441 transitions. [2022-11-16 12:23:30,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 192 transitions, 705 flow [2022-11-16 12:23:30,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 192 transitions, 695 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:23:30,113 INFO L231 Difference]: Finished difference. Result has 187 places, 159 transitions, 498 flow [2022-11-16 12:23:30,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=498, PETRI_PLACES=187, PETRI_TRANSITIONS=159} [2022-11-16 12:23:30,115 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 43 predicate places. [2022-11-16 12:23:30,115 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 159 transitions, 498 flow [2022-11-16 12:23:30,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.375) internal successors, (1011), 8 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:30,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:30,116 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] [2022-11-16 12:23:30,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:23:30,116 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:30,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash 964825708, now seen corresponding path program 1 times [2022-11-16 12:23:30,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:30,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767214796] [2022-11-16 12:23:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:30,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:30,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:30,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767214796] [2022-11-16 12:23:30,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767214796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:30,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:30,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:23:30,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286096879] [2022-11-16 12:23:30,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:30,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:23:30,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:30,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:23:30,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:23:30,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 169 [2022-11-16 12:23:30,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 159 transitions, 498 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:30,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:30,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 169 [2022-11-16 12:23:30,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:31,592 INFO L130 PetriNetUnfolder]: 2892/6532 cut-off events. [2022-11-16 12:23:31,592 INFO L131 PetriNetUnfolder]: For 1034/1038 co-relation queries the response was YES. [2022-11-16 12:23:31,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13176 conditions, 6532 events. 2892/6532 cut-off events. For 1034/1038 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 58938 event pairs, 244 based on Foata normal form. 172/5777 useless extension candidates. Maximal degree in co-relation 12516. Up to 2168 conditions per place. [2022-11-16 12:23:31,691 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 33 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2022-11-16 12:23:31,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 169 transitions, 599 flow [2022-11-16 12:23:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:23:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:23:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 836 transitions. [2022-11-16 12:23:31,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8244575936883629 [2022-11-16 12:23:31,695 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 836 transitions. [2022-11-16 12:23:31,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 836 transitions. [2022-11-16 12:23:31,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:31,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 836 transitions. [2022-11-16 12:23:31,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.33333333333334) internal successors, (836), 6 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:31,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:31,841 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:31,841 INFO L175 Difference]: Start difference. First operand has 187 places, 159 transitions, 498 flow. Second operand 6 states and 836 transitions. [2022-11-16 12:23:31,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 169 transitions, 599 flow [2022-11-16 12:23:31,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 169 transitions, 583 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:23:31,877 INFO L231 Difference]: Finished difference. Result has 184 places, 157 transitions, 489 flow [2022-11-16 12:23:31,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=489, PETRI_PLACES=184, PETRI_TRANSITIONS=157} [2022-11-16 12:23:31,878 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 40 predicate places. [2022-11-16 12:23:31,878 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 157 transitions, 489 flow [2022-11-16 12:23:31,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:31,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:31,879 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:31,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:23:31,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:31,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:31,880 INFO L85 PathProgramCache]: Analyzing trace with hash 548431428, now seen corresponding path program 1 times [2022-11-16 12:23:31,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:31,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486631784] [2022-11-16 12:23:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:31,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:31,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:31,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486631784] [2022-11-16 12:23:31,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486631784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:31,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039159859] [2022-11-16 12:23:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:31,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:31,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:31,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:31,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:23:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:32,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:23:32,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:32,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:32,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039159859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:32,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:32,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:23:32,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920030531] [2022-11-16 12:23:32,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:32,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:23:32,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:23:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:32,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-16 12:23:32,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 157 transitions, 489 flow. Second operand has 12 states, 12 states have (on average 143.75) internal successors, (1725), 12 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:32,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:32,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-16 12:23:32,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:34,054 INFO L130 PetriNetUnfolder]: 4162/9817 cut-off events. [2022-11-16 12:23:34,054 INFO L131 PetriNetUnfolder]: For 1525/1529 co-relation queries the response was YES. [2022-11-16 12:23:34,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20464 conditions, 9817 events. 4162/9817 cut-off events. For 1525/1529 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 95668 event pairs, 687 based on Foata normal form. 171/9312 useless extension candidates. Maximal degree in co-relation 18744. Up to 1598 conditions per place. [2022-11-16 12:23:34,201 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 102 selfloop transitions, 18 changer transitions 0/256 dead transitions. [2022-11-16 12:23:34,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 256 transitions, 1001 flow [2022-11-16 12:23:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:23:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:23:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2661 transitions. [2022-11-16 12:23:34,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8747534516765286 [2022-11-16 12:23:34,208 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2661 transitions. [2022-11-16 12:23:34,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2661 transitions. [2022-11-16 12:23:34,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:34,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2661 transitions. [2022-11-16 12:23:34,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 147.83333333333334) internal successors, (2661), 18 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:34,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:34,226 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:34,226 INFO L175 Difference]: Start difference. First operand has 184 places, 157 transitions, 489 flow. Second operand 18 states and 2661 transitions. [2022-11-16 12:23:34,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 256 transitions, 1001 flow [2022-11-16 12:23:34,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 256 transitions, 985 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:23:34,266 INFO L231 Difference]: Finished difference. Result has 200 places, 169 transitions, 579 flow [2022-11-16 12:23:34,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=579, PETRI_PLACES=200, PETRI_TRANSITIONS=169} [2022-11-16 12:23:34,267 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 56 predicate places. [2022-11-16 12:23:34,267 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 169 transitions, 579 flow [2022-11-16 12:23:34,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.75) internal successors, (1725), 12 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:34,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:34,269 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:34,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:34,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:34,486 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:34,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash -178494420, now seen corresponding path program 1 times [2022-11-16 12:23:34,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:34,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547206127] [2022-11-16 12:23:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:34,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:34,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:34,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547206127] [2022-11-16 12:23:34,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547206127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:34,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631918029] [2022-11-16 12:23:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:34,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:34,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:34,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:34,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:23:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:34,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:23:34,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:34,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:34,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631918029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:34,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:34,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:23:34,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228391781] [2022-11-16 12:23:34,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:34,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:23:34,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:34,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:23:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:34,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-16 12:23:34,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 169 transitions, 579 flow. Second operand has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:34,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:34,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-16 12:23:34,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:36,350 INFO L130 PetriNetUnfolder]: 3672/8217 cut-off events. [2022-11-16 12:23:36,350 INFO L131 PetriNetUnfolder]: For 2827/2831 co-relation queries the response was YES. [2022-11-16 12:23:36,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18670 conditions, 8217 events. 3672/8217 cut-off events. For 2827/2831 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 77479 event pairs, 210 based on Foata normal form. 228/8005 useless extension candidates. Maximal degree in co-relation 17378. Up to 2432 conditions per place. [2022-11-16 12:23:36,463 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 44 selfloop transitions, 11 changer transitions 0/191 dead transitions. [2022-11-16 12:23:36,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 191 transitions, 732 flow [2022-11-16 12:23:36,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:23:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:23:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1034 transitions. [2022-11-16 12:23:36,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740490278951818 [2022-11-16 12:23:36,474 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1034 transitions. [2022-11-16 12:23:36,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1034 transitions. [2022-11-16 12:23:36,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:36,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1034 transitions. [2022-11-16 12:23:36,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.71428571428572) internal successors, (1034), 7 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:36,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:36,499 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:36,507 INFO L175 Difference]: Start difference. First operand has 200 places, 169 transitions, 579 flow. Second operand 7 states and 1034 transitions. [2022-11-16 12:23:36,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 191 transitions, 732 flow [2022-11-16 12:23:36,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 191 transitions, 700 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 12:23:36,545 INFO L231 Difference]: Finished difference. Result has 196 places, 165 transitions, 542 flow [2022-11-16 12:23:36,547 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=196, PETRI_TRANSITIONS=165} [2022-11-16 12:23:36,547 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 52 predicate places. [2022-11-16 12:23:36,548 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 165 transitions, 542 flow [2022-11-16 12:23:36,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:36,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:36,549 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:36,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:36,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:23:36,756 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:36,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:36,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2115802593, now seen corresponding path program 1 times [2022-11-16 12:23:36,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:36,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218363089] [2022-11-16 12:23:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:36,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:36,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:36,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218363089] [2022-11-16 12:23:36,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218363089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:36,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768776642] [2022-11-16 12:23:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:36,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:36,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:36,917 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:36,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:23:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:37,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:23:37,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:37,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:37,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768776642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:37,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:37,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-16 12:23:37,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543620788] [2022-11-16 12:23:37,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:37,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:23:37,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:37,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:23:37,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:23:37,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 169 [2022-11-16 12:23:37,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 165 transitions, 542 flow. Second operand has 23 states, 23 states have (on average 122.65217391304348) internal successors, (2821), 23 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:37,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:37,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 169 [2022-11-16 12:23:37,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:41,445 INFO L130 PetriNetUnfolder]: 6807/14476 cut-off events. [2022-11-16 12:23:41,445 INFO L131 PetriNetUnfolder]: For 3806/3806 co-relation queries the response was YES. [2022-11-16 12:23:41,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31785 conditions, 14476 events. 6807/14476 cut-off events. For 3806/3806 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 135093 event pairs, 1466 based on Foata normal form. 124/13462 useless extension candidates. Maximal degree in co-relation 29246. Up to 2690 conditions per place. [2022-11-16 12:23:41,621 INFO L137 encePairwiseOnDemand]: 151/169 looper letters, 178 selfloop transitions, 33 changer transitions 1/320 dead transitions. [2022-11-16 12:23:41,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 320 transitions, 1414 flow [2022-11-16 12:23:41,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 12:23:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-16 12:23:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3539 transitions. [2022-11-16 12:23:41,630 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7478867286559594 [2022-11-16 12:23:41,630 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3539 transitions. [2022-11-16 12:23:41,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3539 transitions. [2022-11-16 12:23:41,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:41,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3539 transitions. [2022-11-16 12:23:41,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 126.39285714285714) internal successors, (3539), 28 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:41,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 169.0) internal successors, (4901), 29 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:41,650 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 169.0) internal successors, (4901), 29 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:41,650 INFO L175 Difference]: Start difference. First operand has 196 places, 165 transitions, 542 flow. Second operand 28 states and 3539 transitions. [2022-11-16 12:23:41,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 320 transitions, 1414 flow [2022-11-16 12:23:41,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 320 transitions, 1400 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:23:41,689 INFO L231 Difference]: Finished difference. Result has 224 places, 180 transitions, 689 flow [2022-11-16 12:23:41,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=689, PETRI_PLACES=224, PETRI_TRANSITIONS=180} [2022-11-16 12:23:41,690 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 80 predicate places. [2022-11-16 12:23:41,691 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 180 transitions, 689 flow [2022-11-16 12:23:41,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 122.65217391304348) internal successors, (2821), 23 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:41,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:41,692 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:41,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:41,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:41,897 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:41,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:41,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1911720162, now seen corresponding path program 2 times [2022-11-16 12:23:41,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:41,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84893503] [2022-11-16 12:23:41,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:41,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:42,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:42,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84893503] [2022-11-16 12:23:42,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84893503] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:42,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033849247] [2022-11-16 12:23:42,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:23:42,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:42,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:42,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:42,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:23:42,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:23:42,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:42,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:23:42,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:23:42,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:23:42,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033849247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:42,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:42,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:23:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88043303] [2022-11-16 12:23:42,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:42,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:23:42,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:23:42,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:23:42,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 169 [2022-11-16 12:23:42,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 180 transitions, 689 flow. Second operand has 18 states, 18 states have (on average 127.61111111111111) internal successors, (2297), 18 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:42,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:42,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 169 [2022-11-16 12:23:42,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:47,270 INFO L130 PetriNetUnfolder]: 4950/22268 cut-off events. [2022-11-16 12:23:47,270 INFO L131 PetriNetUnfolder]: For 9000/9372 co-relation queries the response was YES. [2022-11-16 12:23:47,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44646 conditions, 22268 events. 4950/22268 cut-off events. For 9000/9372 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 276485 event pairs, 3594 based on Foata normal form. 374/21071 useless extension candidates. Maximal degree in co-relation 42744. Up to 1785 conditions per place. [2022-11-16 12:23:47,651 INFO L137 encePairwiseOnDemand]: 158/169 looper letters, 136 selfloop transitions, 25 changer transitions 1/287 dead transitions. [2022-11-16 12:23:47,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 287 transitions, 1372 flow [2022-11-16 12:23:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:23:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:23:47,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3129 transitions. [2022-11-16 12:23:47,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7714497041420119 [2022-11-16 12:23:47,658 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3129 transitions. [2022-11-16 12:23:47,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3129 transitions. [2022-11-16 12:23:47,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:47,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3129 transitions. [2022-11-16 12:23:47,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 130.375) internal successors, (3129), 24 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:47,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 169.0) internal successors, (4225), 25 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:47,677 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 169.0) internal successors, (4225), 25 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:47,678 INFO L175 Difference]: Start difference. First operand has 224 places, 180 transitions, 689 flow. Second operand 24 states and 3129 transitions. [2022-11-16 12:23:47,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 287 transitions, 1372 flow [2022-11-16 12:23:48,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 287 transitions, 1321 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-11-16 12:23:48,075 INFO L231 Difference]: Finished difference. Result has 231 places, 184 transitions, 713 flow [2022-11-16 12:23:48,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=713, PETRI_PLACES=231, PETRI_TRANSITIONS=184} [2022-11-16 12:23:48,076 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 87 predicate places. [2022-11-16 12:23:48,076 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 184 transitions, 713 flow [2022-11-16 12:23:48,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.61111111111111) internal successors, (2297), 18 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:48,078 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] [2022-11-16 12:23:48,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:48,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:48,282 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:48,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:48,283 INFO L85 PathProgramCache]: Analyzing trace with hash 508735683, now seen corresponding path program 1 times [2022-11-16 12:23:48,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:48,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49642193] [2022-11-16 12:23:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:48,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:48,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:48,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49642193] [2022-11-16 12:23:48,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49642193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:48,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140783323] [2022-11-16 12:23:48,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:48,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:48,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:48,468 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:48,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:23:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:23:48,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:48,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:48,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140783323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:48,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:48,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-16 12:23:48,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991689245] [2022-11-16 12:23:48,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:48,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:23:48,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:48,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:23:48,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:23:48,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 169 [2022-11-16 12:23:48,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 184 transitions, 713 flow. Second operand has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:48,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 169 [2022-11-16 12:23:48,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:52,350 INFO L130 PetriNetUnfolder]: 8581/18084 cut-off events. [2022-11-16 12:23:52,350 INFO L131 PetriNetUnfolder]: For 6714/7218 co-relation queries the response was YES. [2022-11-16 12:23:52,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40949 conditions, 18084 events. 8581/18084 cut-off events. For 6714/7218 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 183322 event pairs, 2721 based on Foata normal form. 1021/17687 useless extension candidates. Maximal degree in co-relation 39119. Up to 5291 conditions per place. [2022-11-16 12:23:52,548 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 52 selfloop transitions, 11 changer transitions 6/216 dead transitions. [2022-11-16 12:23:52,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 216 transitions, 969 flow [2022-11-16 12:23:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:23:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:23:52,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 968 transitions. [2022-11-16 12:23:52,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8182586644125106 [2022-11-16 12:23:52,551 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 968 transitions. [2022-11-16 12:23:52,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 968 transitions. [2022-11-16 12:23:52,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:52,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 968 transitions. [2022-11-16 12:23:52,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.28571428571428) internal successors, (968), 7 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:52,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:52,556 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:52,556 INFO L175 Difference]: Start difference. First operand has 231 places, 184 transitions, 713 flow. Second operand 7 states and 968 transitions. [2022-11-16 12:23:52,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 216 transitions, 969 flow [2022-11-16 12:23:52,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 216 transitions, 905 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-16 12:23:52,686 INFO L231 Difference]: Finished difference. Result has 218 places, 180 transitions, 660 flow [2022-11-16 12:23:52,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=218, PETRI_TRANSITIONS=180} [2022-11-16 12:23:52,687 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 74 predicate places. [2022-11-16 12:23:52,687 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 180 transitions, 660 flow [2022-11-16 12:23:52,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:52,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:52,688 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:52,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:52,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:52,894 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:52,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:52,895 INFO L85 PathProgramCache]: Analyzing trace with hash -786562222, now seen corresponding path program 1 times [2022-11-16 12:23:52,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:52,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007142211] [2022-11-16 12:23:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:52,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:23:53,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:53,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007142211] [2022-11-16 12:23:53,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007142211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:53,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560132510] [2022-11-16 12:23:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:53,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:53,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:53,043 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:53,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:23:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:53,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:23:53,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:23:53,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:53,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560132510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:53,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:53,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:23:53,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892548805] [2022-11-16 12:23:53,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:53,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:23:53,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:53,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:23:53,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:53,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-16 12:23:53,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 180 transitions, 660 flow. Second operand has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:53,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:53,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-16 12:23:53,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:55,347 INFO L130 PetriNetUnfolder]: 4318/9622 cut-off events. [2022-11-16 12:23:55,347 INFO L131 PetriNetUnfolder]: For 2741/2741 co-relation queries the response was YES. [2022-11-16 12:23:55,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23080 conditions, 9622 events. 4318/9622 cut-off events. For 2741/2741 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 90781 event pairs, 70 based on Foata normal form. 190/9359 useless extension candidates. Maximal degree in co-relation 23029. Up to 2377 conditions per place. [2022-11-16 12:23:55,424 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 44 selfloop transitions, 13 changer transitions 0/203 dead transitions. [2022-11-16 12:23:55,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 203 transitions, 830 flow [2022-11-16 12:23:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:23:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:23:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1033 transitions. [2022-11-16 12:23:55,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732037193575655 [2022-11-16 12:23:55,427 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1033 transitions. [2022-11-16 12:23:55,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1033 transitions. [2022-11-16 12:23:55,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:55,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1033 transitions. [2022-11-16 12:23:55,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:55,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:55,433 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:55,433 INFO L175 Difference]: Start difference. First operand has 218 places, 180 transitions, 660 flow. Second operand 7 states and 1033 transitions. [2022-11-16 12:23:55,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 203 transitions, 830 flow [2022-11-16 12:23:55,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 203 transitions, 806 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 12:23:55,479 INFO L231 Difference]: Finished difference. Result has 214 places, 178 transitions, 648 flow [2022-11-16 12:23:55,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=214, PETRI_TRANSITIONS=178} [2022-11-16 12:23:55,480 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 70 predicate places. [2022-11-16 12:23:55,481 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 178 transitions, 648 flow [2022-11-16 12:23:55,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:55,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:55,482 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:55,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:55,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:23:55,687 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:23:55,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:55,687 INFO L85 PathProgramCache]: Analyzing trace with hash -87650249, now seen corresponding path program 2 times [2022-11-16 12:23:55,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:55,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077021821] [2022-11-16 12:23:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:55,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:55,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:55,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077021821] [2022-11-16 12:23:55,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077021821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:55,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643212006] [2022-11-16 12:23:55,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:23:55,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:55,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:55,992 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:56,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:23:56,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:23:56,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:56,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:23:56,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 12:23:56,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 12:23:56,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643212006] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:56,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:56,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-16 12:23:56,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046172136] [2022-11-16 12:23:56,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:56,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:23:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:23:56,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:23:56,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 169 [2022-11-16 12:23:56,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 178 transitions, 648 flow. Second operand has 19 states, 19 states have (on average 120.21052631578948) internal successors, (2284), 19 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:56,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:56,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 169 [2022-11-16 12:23:56,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:24:01,340 INFO L130 PetriNetUnfolder]: 8310/21083 cut-off events. [2022-11-16 12:24:01,341 INFO L131 PetriNetUnfolder]: For 10128/10675 co-relation queries the response was YES. [2022-11-16 12:24:01,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47709 conditions, 21083 events. 8310/21083 cut-off events. For 10128/10675 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 224500 event pairs, 1350 based on Foata normal form. 262/20100 useless extension candidates. Maximal degree in co-relation 44933. Up to 3685 conditions per place. [2022-11-16 12:24:01,546 INFO L137 encePairwiseOnDemand]: 151/169 looper letters, 224 selfloop transitions, 48 changer transitions 0/374 dead transitions. [2022-11-16 12:24:01,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 374 transitions, 1797 flow [2022-11-16 12:24:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 12:24:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-16 12:24:01,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4898 transitions. [2022-11-16 12:24:01,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7245562130177515 [2022-11-16 12:24:01,555 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4898 transitions. [2022-11-16 12:24:01,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4898 transitions. [2022-11-16 12:24:01,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:24:01,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4898 transitions. [2022-11-16 12:24:01,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 122.45) internal successors, (4898), 40 states have internal predecessors, (4898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:01,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 169.0) internal successors, (6929), 41 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:01,578 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 169.0) internal successors, (6929), 41 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:01,578 INFO L175 Difference]: Start difference. First operand has 214 places, 178 transitions, 648 flow. Second operand 40 states and 4898 transitions. [2022-11-16 12:24:01,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 374 transitions, 1797 flow [2022-11-16 12:24:01,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 374 transitions, 1757 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-16 12:24:01,853 INFO L231 Difference]: Finished difference. Result has 249 places, 189 transitions, 800 flow [2022-11-16 12:24:01,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=800, PETRI_PLACES=249, PETRI_TRANSITIONS=189} [2022-11-16 12:24:01,854 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 105 predicate places. [2022-11-16 12:24:01,855 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 189 transitions, 800 flow [2022-11-16 12:24:01,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 120.21052631578948) internal successors, (2284), 19 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:01,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:24:01,858 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:01,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:02,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:24:02,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:24:02,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:02,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1042491535, now seen corresponding path program 2 times [2022-11-16 12:24:02,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:02,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689048495] [2022-11-16 12:24:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:02,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:02,301 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:02,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:02,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689048495] [2022-11-16 12:24:02,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689048495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:02,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657338993] [2022-11-16 12:24:02,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:24:02,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:02,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:02,306 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:02,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:24:02,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:24:02,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:02,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:24:02,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 12:24:02,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 12:24:02,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657338993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:02,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:24:02,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-16 12:24:02,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264611503] [2022-11-16 12:24:02,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:02,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:24:02,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:02,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:24:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:24:02,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 169 [2022-11-16 12:24:02,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 189 transitions, 800 flow. Second operand has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:02,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:24:02,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 169 [2022-11-16 12:24:02,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:24:07,419 INFO L130 PetriNetUnfolder]: 11292/23430 cut-off events. [2022-11-16 12:24:07,419 INFO L131 PetriNetUnfolder]: For 7297/7303 co-relation queries the response was YES. [2022-11-16 12:24:07,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51644 conditions, 23430 events. 11292/23430 cut-off events. For 7297/7303 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 242625 event pairs, 890 based on Foata normal form. 284/22342 useless extension candidates. Maximal degree in co-relation 51108. Up to 3075 conditions per place. [2022-11-16 12:24:07,577 INFO L137 encePairwiseOnDemand]: 160/169 looper letters, 0 selfloop transitions, 0 changer transitions 308/308 dead transitions. [2022-11-16 12:24:07,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 308 transitions, 1414 flow [2022-11-16 12:24:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:24:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:24:07,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3104 transitions. [2022-11-16 12:24:07,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8348574502420656 [2022-11-16 12:24:07,582 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3104 transitions. [2022-11-16 12:24:07,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3104 transitions. [2022-11-16 12:24:07,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:24:07,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3104 transitions. [2022-11-16 12:24:07,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 141.0909090909091) internal successors, (3104), 22 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:07,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 169.0) internal successors, (3887), 23 states have internal predecessors, (3887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:07,595 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 169.0) internal successors, (3887), 23 states have internal predecessors, (3887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:07,595 INFO L175 Difference]: Start difference. First operand has 249 places, 189 transitions, 800 flow. Second operand 22 states and 3104 transitions. [2022-11-16 12:24:07,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 308 transitions, 1414 flow [2022-11-16 12:24:07,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 308 transitions, 1343 flow, removed 5 selfloop flow, removed 25 redundant places. [2022-11-16 12:24:07,670 INFO L231 Difference]: Finished difference. Result has 244 places, 0 transitions, 0 flow [2022-11-16 12:24:07,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=244, PETRI_TRANSITIONS=0} [2022-11-16 12:24:07,671 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 100 predicate places. [2022-11-16 12:24:07,671 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 0 transitions, 0 flow [2022-11-16 12:24:07,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:07,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-16 12:24:07,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-16 12:24:07,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-16 12:24:07,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-16 12:24:07,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-16 12:24:07,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-16 12:24:07,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-16 12:24:07,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-16 12:24:07,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-16 12:24:07,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-16 12:24:07,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-16 12:24:07,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-16 12:24:07,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-16 12:24:07,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-16 12:24:07,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-16 12:24:07,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-16 12:24:07,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-16 12:24:07,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:07,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:24:07,884 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:07,888 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:24:07,888 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:24:07,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:24:07 BasicIcfg [2022-11-16 12:24:07,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:24:07,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:24:07,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:24:07,894 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:24:07,895 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:18" (3/4) ... [2022-11-16 12:24:07,897 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:24:07,902 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:24:07,902 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:24:07,902 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 12:24:07,907 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-16 12:24:07,907 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:24:07,907 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:24:07,908 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:24:07,944 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:24:07,947 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:24:07,948 INFO L158 Benchmark]: Toolchain (without parser) took 50375.20ms. Allocated memory was 92.3MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 57.0MB in the beginning and 7.6GB in the end (delta: -7.5GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-16 12:24:07,948 INFO L158 Benchmark]: CDTParser took 1.09ms. Allocated memory is still 92.3MB. Free memory was 64.6MB in the beginning and 64.5MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:24:07,949 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.61ms. Allocated memory is still 92.3MB. Free memory was 56.8MB in the beginning and 66.2MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:24:07,949 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.69ms. Allocated memory is still 92.3MB. Free memory was 66.2MB in the beginning and 64.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:24:07,950 INFO L158 Benchmark]: Boogie Preprocessor took 35.43ms. Allocated memory is still 92.3MB. Free memory was 64.4MB in the beginning and 63.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:24:07,950 INFO L158 Benchmark]: RCFGBuilder took 785.06ms. Allocated memory is still 92.3MB. Free memory was 62.6MB in the beginning and 41.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-16 12:24:07,950 INFO L158 Benchmark]: TraceAbstraction took 48974.76ms. Allocated memory was 92.3MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 41.0MB in the beginning and 7.6GB in the end (delta: -7.5GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2022-11-16 12:24:07,951 INFO L158 Benchmark]: Witness Printer took 53.46ms. Allocated memory is still 9.0GB. Free memory was 7.6GB in the beginning and 7.6GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:24:07,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09ms. Allocated memory is still 92.3MB. Free memory was 64.6MB in the beginning and 64.5MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 470.61ms. Allocated memory is still 92.3MB. Free memory was 56.8MB in the beginning and 66.2MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.69ms. Allocated memory is still 92.3MB. Free memory was 66.2MB in the beginning and 64.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.43ms. Allocated memory is still 92.3MB. Free memory was 64.4MB in the beginning and 63.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 785.06ms. Allocated memory is still 92.3MB. Free memory was 62.6MB in the beginning and 41.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 48974.76ms. Allocated memory was 92.3MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 41.0MB in the beginning and 7.6GB in the end (delta: -7.5GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 53.46ms. Allocated memory is still 9.0GB. Free memory was 7.6GB in the beginning and 7.6GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 200 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 48.7s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 39.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3258 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3258 mSDsluCounter, 440 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 348 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3236 IncrementalHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 92 mSDtfsCounter, 3236 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1696 GetRequests, 1391 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=800occurred in iteration=15, InterpolantAutomatonStates: 218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 2225 NumberOfCodeBlocks, 2129 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2716 ConstructedInterpolants, 0 QuantifiedInterpolants, 5550 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1997 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 309/597 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:24:07,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f218aa4d-2441-477b-aa72-f646001706f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE