./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:52:20,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:52:20,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:52:21,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:52:21,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:52:21,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:52:21,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:52:21,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:52:21,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:52:21,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:52:21,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:52:21,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:52:21,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:52:21,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:52:21,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:52:21,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:52:21,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:52:21,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:52:21,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:52:21,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:52:21,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:52:21,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:52:21,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:52:21,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:52:21,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:52:21,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:52:21,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:52:21,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:52:21,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:52:21,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:52:21,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:52:21,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:52:21,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:52:21,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:52:21,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:52:21,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:52:21,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:52:21,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:52:21,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:52:21,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:52:21,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:52:21,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:52:21,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:52:21,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:52:21,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:52:21,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:52:21,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:52:21,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:52:21,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:52:21,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:52:21,098 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:52:21,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:52:21,098 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:52:21,098 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:52:21,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:52:21,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:52:21,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:52:21,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:52:21,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:52:21,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:52:21,100 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:52:21,100 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:52:21,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:52:21,101 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:52:21,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:52:21,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:52:21,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:52:21,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:52:21,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:52:21,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:52:21,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:52:21,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:52:21,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:52:21,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:52:21,104 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:52:21,104 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:52:21,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:52:21,105 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_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f [2022-11-20 10:52:21,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:52:21,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:52:21,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:52:21,398 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:52:21,398 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:52:21,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-20 10:52:24,408 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:52:24,648 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:52:24,649 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-20 10:52:24,655 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/data/d88e73246/e15f654f64b540dbbbaecfb1f8b71357/FLAG286e432ba [2022-11-20 10:52:24,669 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/data/d88e73246/e15f654f64b540dbbbaecfb1f8b71357 [2022-11-20 10:52:24,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:52:24,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:52:24,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:52:24,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:52:24,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:52:24,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:52:24" (1/1) ... [2022-11-20 10:52:24,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c279629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:24, skipping insertion in model container [2022-11-20 10:52:24,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:52:24" (1/1) ... [2022-11-20 10:52:24,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:52:24,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:52:24,925 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-20 10:52:24,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:52:24,955 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:52:24,997 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-20 10:52:25,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:52:25,019 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:52:25,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25 WrapperNode [2022-11-20 10:52:25,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:52:25,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:52:25,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:52:25,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:52:25,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (1/1) ... [2022-11-20 10:52:25,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (1/1) ... [2022-11-20 10:52:25,107 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 353 [2022-11-20 10:52:25,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:52:25,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:52:25,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:52:25,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:52:25,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (1/1) ... [2022-11-20 10:52:25,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (1/1) ... [2022-11-20 10:52:25,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (1/1) ... [2022-11-20 10:52:25,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (1/1) ... [2022-11-20 10:52:25,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (1/1) ... [2022-11-20 10:52:25,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (1/1) ... [2022-11-20 10:52:25,162 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (1/1) ... [2022-11-20 10:52:25,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (1/1) ... [2022-11-20 10:52:25,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:52:25,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:52:25,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:52:25,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:52:25,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (1/1) ... [2022-11-20 10:52:25,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:52:25,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:25,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:52:25,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:52:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:52:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:52:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:52:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:52:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:52:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:52:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:52:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:52:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:52:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:52:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:52:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:52:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:52:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:52:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:52:25,250 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:52:25,362 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:52:25,364 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:52:26,168 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:52:26,182 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:52:26,182 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 10:52:26,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:52:26 BoogieIcfgContainer [2022-11-20 10:52:26,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:52:26,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:52:26,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:52:26,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:52:26,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:52:24" (1/3) ... [2022-11-20 10:52:26,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7368a2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:52:26, skipping insertion in model container [2022-11-20 10:52:26,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:25" (2/3) ... [2022-11-20 10:52:26,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7368a2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:52:26, skipping insertion in model container [2022-11-20 10:52:26,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:52:26" (3/3) ... [2022-11-20 10:52:26,195 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2022-11-20 10:52:26,204 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:52:26,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:52:26,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-20 10:52:26,216 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:52:26,435 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:52:26,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 472 places, 501 transitions, 1026 flow [2022-11-20 10:52:26,804 INFO L130 PetriNetUnfolder]: 39/498 cut-off events. [2022-11-20 10:52:26,804 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:52:26,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 39/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1043 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 303. Up to 2 conditions per place. [2022-11-20 10:52:26,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 472 places, 501 transitions, 1026 flow [2022-11-20 10:52:26,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 473 transitions, 964 flow [2022-11-20 10:52:26,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:52:26,859 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;@53b23e3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:52:26,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-20 10:52:26,870 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-20 10:52:26,870 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:52:26,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:26,872 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] [2022-11-20 10:52:26,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 10:52:26,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash -789370683, now seen corresponding path program 1 times [2022-11-20 10:52:26,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:26,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96138004] [2022-11-20 10:52:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:27,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:27,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96138004] [2022-11-20 10:52:27,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96138004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:27,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:27,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:52:27,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973601981] [2022-11-20 10:52:27,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:27,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:52:27,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:27,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:52:27,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:52:27,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-20 10:52:27,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 473 transitions, 964 flow. Second operand has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:27,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-20 10:52:27,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:27,800 INFO L130 PetriNetUnfolder]: 31/810 cut-off events. [2022-11-20 10:52:27,800 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-20 10:52:27,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 810 events. 31/810 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3102 event pairs, 0 based on Foata normal form. 44/720 useless extension candidates. Maximal degree in co-relation 550. Up to 45 conditions per place. [2022-11-20 10:52:27,817 INFO L137 encePairwiseOnDemand]: 459/501 looper letters, 60 selfloop transitions, 14 changer transitions 8/483 dead transitions. [2022-11-20 10:52:27,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 483 transitions, 1150 flow [2022-11-20 10:52:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:52:27,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:52:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2293 transitions. [2022-11-20 10:52:27,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153692614770459 [2022-11-20 10:52:27,846 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2293 transitions. [2022-11-20 10:52:27,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2293 transitions. [2022-11-20 10:52:27,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:27,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2293 transitions. [2022-11-20 10:52:27,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 458.6) internal successors, (2293), 5 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,878 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,880 INFO L175 Difference]: Start difference. First operand has 445 places, 473 transitions, 964 flow. Second operand 5 states and 2293 transitions. [2022-11-20 10:52:27,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 483 transitions, 1150 flow [2022-11-20 10:52:27,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 483 transitions, 1126 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 10:52:27,902 INFO L231 Difference]: Finished difference. Result has 446 places, 454 transitions, 996 flow [2022-11-20 10:52:27,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=996, PETRI_PLACES=446, PETRI_TRANSITIONS=454} [2022-11-20 10:52:27,911 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 1 predicate places. [2022-11-20 10:52:27,911 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 454 transitions, 996 flow [2022-11-20 10:52:27,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:27,913 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] [2022-11-20 10:52:27,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:52:27,914 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 10:52:27,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:27,915 INFO L85 PathProgramCache]: Analyzing trace with hash -955416257, now seen corresponding path program 1 times [2022-11-20 10:52:27,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:27,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292682308] [2022-11-20 10:52:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:27,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:28,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:28,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292682308] [2022-11-20 10:52:28,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292682308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:52:28,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050783838] [2022-11-20 10:52:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:28,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:28,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:28,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:28,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:52:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:28,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:52:28,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:28,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:28,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050783838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:28,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:52:28,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:52:28,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447834301] [2022-11-20 10:52:28,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:28,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:52:28,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:28,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:52:28,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:52:28,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-20 10:52:28,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 454 transitions, 996 flow. Second operand has 12 states, 12 states have (on average 437.6666666666667) internal successors, (5252), 12 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:28,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:28,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-20 10:52:28,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:29,511 INFO L130 PetriNetUnfolder]: 76/1877 cut-off events. [2022-11-20 10:52:29,511 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-20 10:52:29,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 1877 events. 76/1877 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11423 event pairs, 0 based on Foata normal form. 9/1591 useless extension candidates. Maximal degree in co-relation 1368. Up to 36 conditions per place. [2022-11-20 10:52:29,548 INFO L137 encePairwiseOnDemand]: 478/501 looper letters, 114 selfloop transitions, 62 changer transitions 0/577 dead transitions. [2022-11-20 10:52:29,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 577 transitions, 1696 flow [2022-11-20 10:52:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:52:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:52:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 8015 transitions. [2022-11-20 10:52:29,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8887779995564427 [2022-11-20 10:52:29,565 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 8015 transitions. [2022-11-20 10:52:29,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 8015 transitions. [2022-11-20 10:52:29,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:29,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 8015 transitions. [2022-11-20 10:52:29,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 445.27777777777777) internal successors, (8015), 18 states have internal predecessors, (8015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:29,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 501.0) internal successors, (9519), 19 states have internal predecessors, (9519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:29,614 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 501.0) internal successors, (9519), 19 states have internal predecessors, (9519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:29,614 INFO L175 Difference]: Start difference. First operand has 446 places, 454 transitions, 996 flow. Second operand 18 states and 8015 transitions. [2022-11-20 10:52:29,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 577 transitions, 1696 flow [2022-11-20 10:52:29,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 577 transitions, 1688 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:52:29,628 INFO L231 Difference]: Finished difference. Result has 458 places, 496 transitions, 1358 flow [2022-11-20 10:52:29,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1358, PETRI_PLACES=458, PETRI_TRANSITIONS=496} [2022-11-20 10:52:29,630 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 13 predicate places. [2022-11-20 10:52:29,630 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 496 transitions, 1358 flow [2022-11-20 10:52:29,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 437.6666666666667) internal successors, (5252), 12 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:29,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:29,636 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] [2022-11-20 10:52:29,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:29,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:29,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 10:52:29,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:29,853 INFO L85 PathProgramCache]: Analyzing trace with hash 446868092, now seen corresponding path program 1 times [2022-11-20 10:52:29,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:29,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956032981] [2022-11-20 10:52:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:29,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:29,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:29,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956032981] [2022-11-20 10:52:29,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956032981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:52:29,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20124233] [2022-11-20 10:52:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:29,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:29,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:29,977 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:30,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:52:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:30,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:52:30,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:30,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:52:30,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20124233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:30,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:52:30,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:52:30,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069065836] [2022-11-20 10:52:30,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:30,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:52:30,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:30,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:52:30,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:52:30,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-20 10:52:30,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 496 transitions, 1358 flow. Second operand has 6 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:30,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:30,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-20 10:52:30,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:30,918 INFO L130 PetriNetUnfolder]: 76/1865 cut-off events. [2022-11-20 10:52:30,918 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-11-20 10:52:30,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 1865 events. 76/1865 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11344 event pairs, 0 based on Foata normal form. 12/1582 useless extension candidates. Maximal degree in co-relation 1722. Up to 72 conditions per place. [2022-11-20 10:52:30,956 INFO L137 encePairwiseOnDemand]: 484/501 looper letters, 61 selfloop transitions, 43 changer transitions 0/505 dead transitions. [2022-11-20 10:52:30,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 505 transitions, 1539 flow [2022-11-20 10:52:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:52:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:52:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3119 transitions. [2022-11-20 10:52:30,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.889364128885087 [2022-11-20 10:52:30,965 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3119 transitions. [2022-11-20 10:52:30,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3119 transitions. [2022-11-20 10:52:30,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:30,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3119 transitions. [2022-11-20 10:52:30,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.57142857142856) internal successors, (3119), 7 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:30,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 501.0) internal successors, (4008), 8 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:30,983 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 501.0) internal successors, (4008), 8 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:30,983 INFO L175 Difference]: Start difference. First operand has 458 places, 496 transitions, 1358 flow. Second operand 7 states and 3119 transitions. [2022-11-20 10:52:30,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 505 transitions, 1539 flow [2022-11-20 10:52:30,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 505 transitions, 1423 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 10:52:31,006 INFO L231 Difference]: Finished difference. Result has 452 places, 484 transitions, 1247 flow [2022-11-20 10:52:31,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1247, PETRI_PLACES=452, PETRI_TRANSITIONS=484} [2022-11-20 10:52:31,011 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 7 predicate places. [2022-11-20 10:52:31,011 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 484 transitions, 1247 flow [2022-11-20 10:52:31,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:31,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:31,029 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] [2022-11-20 10:52:31,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:31,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:31,235 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 10:52:31,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1481190213, now seen corresponding path program 2 times [2022-11-20 10:52:31,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:31,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789646021] [2022-11-20 10:52:31,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:31,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:31,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:31,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789646021] [2022-11-20 10:52:31,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789646021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:52:31,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479434465] [2022-11-20 10:52:31,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:52:31,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:31,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:31,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:31,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:52:31,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:52:31,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:31,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:52:31,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:52:31,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:52:32,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479434465] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:32,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:52:32,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 10:52:32,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776931160] [2022-11-20 10:52:32,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:32,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:52:32,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:32,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:52:32,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:52:32,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 501 [2022-11-20 10:52:32,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 484 transitions, 1247 flow. Second operand has 18 states, 18 states have (on average 412.6111111111111) internal successors, (7427), 18 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:32,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:32,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 501 [2022-11-20 10:52:32,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:35,754 INFO L130 PetriNetUnfolder]: 1086/11053 cut-off events. [2022-11-20 10:52:35,754 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2022-11-20 10:52:35,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12610 conditions, 11053 events. 1086/11053 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 124463 event pairs, 392 based on Foata normal form. 6/8588 useless extension candidates. Maximal degree in co-relation 10285. Up to 189 conditions per place. [2022-11-20 10:52:35,990 INFO L137 encePairwiseOnDemand]: 474/501 looper letters, 203 selfloop transitions, 81 changer transitions 0/659 dead transitions. [2022-11-20 10:52:35,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 659 transitions, 2268 flow [2022-11-20 10:52:35,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:52:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 10:52:36,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10106 transitions. [2022-11-20 10:52:36,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8404856952761144 [2022-11-20 10:52:36,015 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10106 transitions. [2022-11-20 10:52:36,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10106 transitions. [2022-11-20 10:52:36,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:36,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10106 transitions. [2022-11-20 10:52:36,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 421.0833333333333) internal successors, (10106), 24 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:36,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:36,079 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:36,080 INFO L175 Difference]: Start difference. First operand has 452 places, 484 transitions, 1247 flow. Second operand 24 states and 10106 transitions. [2022-11-20 10:52:36,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 659 transitions, 2268 flow [2022-11-20 10:52:36,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 659 transitions, 2177 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 10:52:36,098 INFO L231 Difference]: Finished difference. Result has 464 places, 500 transitions, 1410 flow [2022-11-20 10:52:36,099 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1410, PETRI_PLACES=464, PETRI_TRANSITIONS=500} [2022-11-20 10:52:36,100 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 19 predicate places. [2022-11-20 10:52:36,101 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 500 transitions, 1410 flow [2022-11-20 10:52:36,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 412.6111111111111) internal successors, (7427), 18 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:36,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:36,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:36,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 10:52:36,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:36,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 10:52:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1744759366, now seen corresponding path program 1 times [2022-11-20 10:52:36,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:36,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252885811] [2022-11-20 10:52:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:36,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:36,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:36,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252885811] [2022-11-20 10:52:36,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252885811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:36,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:36,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:52:36,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820408248] [2022-11-20 10:52:36,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:36,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:52:36,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:36,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:52:36,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:52:36,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 501 [2022-11-20 10:52:36,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 500 transitions, 1410 flow. Second operand has 7 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:36,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:36,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 501 [2022-11-20 10:52:36,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:40,954 INFO L130 PetriNetUnfolder]: 2207/20708 cut-off events. [2022-11-20 10:52:40,955 INFO L131 PetriNetUnfolder]: For 628/718 co-relation queries the response was YES. [2022-11-20 10:52:41,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24065 conditions, 20708 events. 2207/20708 cut-off events. For 628/718 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 257220 event pairs, 912 based on Foata normal form. 0/16251 useless extension candidates. Maximal degree in co-relation 2664. Up to 1788 conditions per place. [2022-11-20 10:52:41,512 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 158 selfloop transitions, 43 changer transitions 0/602 dead transitions. [2022-11-20 10:52:41,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 602 transitions, 2210 flow [2022-11-20 10:52:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:52:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:52:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4796 transitions. [2022-11-20 10:52:41,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8702594810379242 [2022-11-20 10:52:41,523 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4796 transitions. [2022-11-20 10:52:41,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4796 transitions. [2022-11-20 10:52:41,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:41,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4796 transitions. [2022-11-20 10:52:41,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 436.0) internal successors, (4796), 11 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:41,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:41,548 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:41,549 INFO L175 Difference]: Start difference. First operand has 464 places, 500 transitions, 1410 flow. Second operand 11 states and 4796 transitions. [2022-11-20 10:52:41,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 602 transitions, 2210 flow [2022-11-20 10:52:41,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 602 transitions, 2030 flow, removed 19 selfloop flow, removed 15 redundant places. [2022-11-20 10:52:41,561 INFO L231 Difference]: Finished difference. Result has 462 places, 517 transitions, 1467 flow [2022-11-20 10:52:41,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1467, PETRI_PLACES=462, PETRI_TRANSITIONS=517} [2022-11-20 10:52:41,565 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 17 predicate places. [2022-11-20 10:52:41,566 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 517 transitions, 1467 flow [2022-11-20 10:52:41,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:41,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:41,567 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:41,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:52:41,568 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 10:52:41,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1203227791, now seen corresponding path program 1 times [2022-11-20 10:52:41,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:41,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745321245] [2022-11-20 10:52:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:41,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:41,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:41,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745321245] [2022-11-20 10:52:41,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745321245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:41,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:41,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:52:41,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965168340] [2022-11-20 10:52:41,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:41,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:52:41,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:41,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:52:41,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:52:41,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 501 [2022-11-20 10:52:41,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 517 transitions, 1467 flow. Second operand has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:41,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:41,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 501 [2022-11-20 10:52:41,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:44,436 INFO L130 PetriNetUnfolder]: 1944/13030 cut-off events. [2022-11-20 10:52:44,436 INFO L131 PetriNetUnfolder]: For 1772/1856 co-relation queries the response was YES. [2022-11-20 10:52:44,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16937 conditions, 13030 events. 1944/13030 cut-off events. For 1772/1856 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 143861 event pairs, 921 based on Foata normal form. 84/10466 useless extension candidates. Maximal degree in co-relation 10919. Up to 1980 conditions per place. [2022-11-20 10:52:44,600 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 154 selfloop transitions, 43 changer transitions 0/600 dead transitions. [2022-11-20 10:52:44,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 600 transitions, 2135 flow [2022-11-20 10:52:44,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:52:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:52:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4792 transitions. [2022-11-20 10:52:44,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695336599528216 [2022-11-20 10:52:44,612 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4792 transitions. [2022-11-20 10:52:44,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4792 transitions. [2022-11-20 10:52:44,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:44,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4792 transitions. [2022-11-20 10:52:44,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 435.6363636363636) internal successors, (4792), 11 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:44,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:44,645 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:44,645 INFO L175 Difference]: Start difference. First operand has 462 places, 517 transitions, 1467 flow. Second operand 11 states and 4792 transitions. [2022-11-20 10:52:44,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 600 transitions, 2135 flow [2022-11-20 10:52:44,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 600 transitions, 2130 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:52:44,665 INFO L231 Difference]: Finished difference. Result has 472 places, 519 transitions, 1560 flow [2022-11-20 10:52:44,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1560, PETRI_PLACES=472, PETRI_TRANSITIONS=519} [2022-11-20 10:52:44,668 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 27 predicate places. [2022-11-20 10:52:44,669 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 519 transitions, 1560 flow [2022-11-20 10:52:44,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:44,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:44,670 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:44,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:52:44,671 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 10:52:44,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:44,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1859295929, now seen corresponding path program 1 times [2022-11-20 10:52:44,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:44,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764705147] [2022-11-20 10:52:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:44,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:44,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:44,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764705147] [2022-11-20 10:52:44,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764705147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:44,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:44,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:52:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174513554] [2022-11-20 10:52:44,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:44,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:52:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:44,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:52:44,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:52:44,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 501 [2022-11-20 10:52:44,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 519 transitions, 1560 flow. Second operand has 7 states, 7 states have (on average 424.7142857142857) internal successors, (2973), 7 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:44,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:44,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 501 [2022-11-20 10:52:44,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:48,842 INFO L130 PetriNetUnfolder]: 2700/16604 cut-off events. [2022-11-20 10:52:48,843 INFO L131 PetriNetUnfolder]: For 3635/3761 co-relation queries the response was YES. [2022-11-20 10:52:48,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22361 conditions, 16604 events. 2700/16604 cut-off events. For 3635/3761 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 182412 event pairs, 1144 based on Foata normal form. 126/13497 useless extension candidates. Maximal degree in co-relation 15086. Up to 2934 conditions per place. [2022-11-20 10:52:49,035 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 153 selfloop transitions, 43 changer transitions 0/598 dead transitions. [2022-11-20 10:52:49,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 598 transitions, 2218 flow [2022-11-20 10:52:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:52:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:52:49,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4758 transitions. [2022-11-20 10:52:49,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633641807294502 [2022-11-20 10:52:49,045 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4758 transitions. [2022-11-20 10:52:49,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4758 transitions. [2022-11-20 10:52:49,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:49,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4758 transitions. [2022-11-20 10:52:49,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 432.54545454545456) internal successors, (4758), 11 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:49,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:49,065 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:49,065 INFO L175 Difference]: Start difference. First operand has 472 places, 519 transitions, 1560 flow. Second operand 11 states and 4758 transitions. [2022-11-20 10:52:49,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 598 transitions, 2218 flow [2022-11-20 10:52:49,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 598 transitions, 2178 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:52:49,086 INFO L231 Difference]: Finished difference. Result has 479 places, 521 transitions, 1618 flow [2022-11-20 10:52:49,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1618, PETRI_PLACES=479, PETRI_TRANSITIONS=521} [2022-11-20 10:52:49,088 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 34 predicate places. [2022-11-20 10:52:49,088 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 521 transitions, 1618 flow [2022-11-20 10:52:49,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 424.7142857142857) internal successors, (2973), 7 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:49,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:49,090 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:49,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:52:49,090 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-20 10:52:49,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:49,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1842500036, now seen corresponding path program 1 times [2022-11-20 10:52:49,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:49,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527949285] [2022-11-20 10:52:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:49,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:51,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527949285] [2022-11-20 10:52:51,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527949285] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:52:51,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393316177] [2022-11-20 10:52:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:51,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:51,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:51,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0af75b2-5d8d-4be0-bdff-b40c47daff2d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:52:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:51,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 10:52:51,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:51,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:52:51,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 10:52:52,478 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 10:52:52,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 10:52:52,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 10:52:52,904 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:52:52,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:52:53,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 10:52:53,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:52:53,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 10:52:53,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 10:52:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:53,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:53,598 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_189 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_189) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-20 10:52:55,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:52:55,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-11-20 10:52:55,757 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:52:55,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 136 [2022-11-20 10:52:55,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2022-11-20 10:52:55,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2022-11-20 10:52:56,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 10:52:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-20 10:52:56,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393316177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:56,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:52:56,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 26] total 69 [2022-11-20 10:52:56,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101428338] [2022-11-20 10:52:56,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:56,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-20 10:52:56,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:56,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-20 10:52:56,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=4347, Unknown=21, NotChecked=134, Total=4830 [2022-11-20 10:52:56,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 501 [2022-11-20 10:52:56,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 521 transitions, 1618 flow. Second operand has 70 states, 70 states have (on average 317.9) internal successors, (22253), 70 states have internal predecessors, (22253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:56,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:56,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 501 [2022-11-20 10:52:56,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand