./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/unroll-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:50:07,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:50:07,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:50:07,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:50:07,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:50:07,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:50:07,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:50:07,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:50:07,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:50:07,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:50:07,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:50:07,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:50:07,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:50:07,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:50:07,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:50:07,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:50:07,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:50:07,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:50:07,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:50:07,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:50:07,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:50:07,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:50:07,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:50:07,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:50:07,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:50:07,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:50:07,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:50:07,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:50:07,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:50:07,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:50:07,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:50:07,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:50:07,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:50:07,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:50:07,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:50:07,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:50:07,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:50:07,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:50:07,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:50:07,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:50:07,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:50:07,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:50:07,229 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:50:07,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:50:07,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:50:07,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:50:07,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:50:07,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:50:07,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:50:07,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:50:07,232 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:50:07,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:50:07,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:50:07,233 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:50:07,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:50:07,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:50:07,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:50:07,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:50:07,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:50:07,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:50:07,234 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:50:07,234 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:50:07,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:50:07,235 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:50:07,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:50:07,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:50:07,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:50:07,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:50:07,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:50:07,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:50:07,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:50:07,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:50:07,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:50:07,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:50:07,238 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:50:07,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:50:07,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:50:07,238 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_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e [2022-11-21 16:50:07,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:50:07,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:50:07,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:50:07,512 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:50:07,513 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:50:07,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-11-21 16:50:10,525 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:50:10,719 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:50:10,720 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-11-21 16:50:10,727 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/data/8d4e81e26/dff9101415c2451ea38ad9258ab7a033/FLAG3e36202bf [2022-11-21 16:50:10,742 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/data/8d4e81e26/dff9101415c2451ea38ad9258ab7a033 [2022-11-21 16:50:10,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:50:10,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:50:10,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:50:10,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:50:10,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:50:10,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:50:10" (1/1) ... [2022-11-21 16:50:10,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca9a3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:10, skipping insertion in model container [2022-11-21 16:50:10,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:50:10" (1/1) ... [2022-11-21 16:50:10,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:50:10,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:50:10,968 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_585ade9a-ae74-4893-801d-e661e1444bef/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-11-21 16:50:10,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:50:10,984 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:50:11,007 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_585ade9a-ae74-4893-801d-e661e1444bef/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-11-21 16:50:11,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:50:11,025 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:50:11,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11 WrapperNode [2022-11-21 16:50:11,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:50:11,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:50:11,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:50:11,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:50:11,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (1/1) ... [2022-11-21 16:50:11,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (1/1) ... [2022-11-21 16:50:11,070 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 156 [2022-11-21 16:50:11,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:50:11,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:50:11,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:50:11,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:50:11,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (1/1) ... [2022-11-21 16:50:11,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (1/1) ... [2022-11-21 16:50:11,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (1/1) ... [2022-11-21 16:50:11,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (1/1) ... [2022-11-21 16:50:11,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (1/1) ... [2022-11-21 16:50:11,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (1/1) ... [2022-11-21 16:50:11,097 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (1/1) ... [2022-11-21 16:50:11,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (1/1) ... [2022-11-21 16:50:11,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:50:11,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:50:11,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:50:11,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:50:11,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (1/1) ... [2022-11-21 16:50:11,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:50:11,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:50:11,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:50:11,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:50:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:50:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:50:11,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:50:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:50:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:50:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:50:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:50:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:50:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:50:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:50:11,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:50:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:50:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:50:11,200 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:50:11,346 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:50:11,348 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:50:11,712 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:50:11,723 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:50:11,723 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 16:50:11,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:50:11 BoogieIcfgContainer [2022-11-21 16:50:11,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:50:11,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:50:11,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:50:11,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:50:11,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:50:10" (1/3) ... [2022-11-21 16:50:11,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf0c0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:50:11, skipping insertion in model container [2022-11-21 16:50:11,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:11" (2/3) ... [2022-11-21 16:50:11,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf0c0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:50:11, skipping insertion in model container [2022-11-21 16:50:11,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:50:11" (3/3) ... [2022-11-21 16:50:11,736 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2022-11-21 16:50:11,745 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:50:11,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:50:11,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 16:50:11,757 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:50:11,864 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:50:11,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 202 transitions, 420 flow [2022-11-21 16:50:12,071 INFO L130 PetriNetUnfolder]: 16/200 cut-off events. [2022-11-21 16:50:12,071 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:50:12,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 200 events. 16/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 177 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2022-11-21 16:50:12,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 202 transitions, 420 flow [2022-11-21 16:50:12,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 68 transitions, 136 flow [2022-11-21 16:50:12,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:50:12,101 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;@3d38d287, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:50:12,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 16:50:12,119 INFO L130 PetriNetUnfolder]: 3/62 cut-off events. [2022-11-21 16:50:12,119 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:50:12,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:12,121 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] [2022-11-21 16:50:12,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:50:12,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash -573400187, now seen corresponding path program 1 times [2022-11-21 16:50:12,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:12,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510398147] [2022-11-21 16:50:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:12,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:12,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:12,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510398147] [2022-11-21 16:50:12,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510398147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:12,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:50:12,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:50:12,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447495625] [2022-11-21 16:50:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:12,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:50:12,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:12,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:50:12,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:50:12,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 202 [2022-11-21 16:50:12,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:12,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:12,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 202 [2022-11-21 16:50:12,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:12,710 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-11-21 16:50:12,711 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:50:12,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 3/72 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-11-21 16:50:12,712 INFO L137 encePairwiseOnDemand]: 193/202 looper letters, 14 selfloop transitions, 4 changer transitions 3/72 dead transitions. [2022-11-21 16:50:12,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 180 flow [2022-11-21 16:50:12,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:50:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:50:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 883 transitions. [2022-11-21 16:50:12,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8742574257425743 [2022-11-21 16:50:12,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 883 transitions. [2022-11-21 16:50:12,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 883 transitions. [2022-11-21 16:50:12,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:12,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 883 transitions. [2022-11-21 16:50:12,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.6) internal successors, (883), 5 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:12,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:12,763 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:12,765 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 136 flow. Second operand 5 states and 883 transitions. [2022-11-21 16:50:12,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 180 flow [2022-11-21 16:50:12,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:50:12,776 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 154 flow [2022-11-21 16:50:12,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2022-11-21 16:50:12,785 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2022-11-21 16:50:12,785 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 154 flow [2022-11-21 16:50:12,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:12,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:12,788 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:12,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:50:12,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:50:12,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:12,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1244123267, now seen corresponding path program 1 times [2022-11-21 16:50:12,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:12,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545540344] [2022-11-21 16:50:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:12,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:13,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:13,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545540344] [2022-11-21 16:50:13,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545540344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:50:13,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520374956] [2022-11-21 16:50:13,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:13,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:50:13,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:50:13,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:50:13,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:50:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:13,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:50:13,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:50:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:13,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:50:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:13,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520374956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:50:13,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:50:13,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:50:13,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369902682] [2022-11-21 16:50:13,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:50:13,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:50:13,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:13,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:50:13,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:50:13,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 202 [2022-11-21 16:50:13,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 174.66666666666666) internal successors, (2096), 12 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:13,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:13,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 202 [2022-11-21 16:50:13,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:13,708 INFO L130 PetriNetUnfolder]: 1/100 cut-off events. [2022-11-21 16:50:13,708 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-21 16:50:13,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 100 events. 1/100 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 88. Up to 11 conditions per place. [2022-11-21 16:50:13,710 INFO L137 encePairwiseOnDemand]: 195/202 looper letters, 23 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2022-11-21 16:50:13,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 312 flow [2022-11-21 16:50:13,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:50:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:50:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3140 transitions. [2022-11-21 16:50:13,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8635863586358636 [2022-11-21 16:50:13,719 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3140 transitions. [2022-11-21 16:50:13,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3140 transitions. [2022-11-21 16:50:13,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:13,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3140 transitions. [2022-11-21 16:50:13,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 174.44444444444446) internal successors, (3140), 18 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:13,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:13,738 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:13,738 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 18 states and 3140 transitions. [2022-11-21 16:50:13,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 312 flow [2022-11-21 16:50:13,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:50:13,744 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 258 flow [2022-11-21 16:50:13,744 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=258, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2022-11-21 16:50:13,745 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2022-11-21 16:50:13,745 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 258 flow [2022-11-21 16:50:13,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 174.66666666666666) internal successors, (2096), 12 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:13,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:13,748 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:13,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:50:13,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:50:13,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:50:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash 86884805, now seen corresponding path program 1 times [2022-11-21 16:50:13,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:13,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895047483] [2022-11-21 16:50:13,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:13,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:14,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:14,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895047483] [2022-11-21 16:50:14,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895047483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:50:14,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045881251] [2022-11-21 16:50:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:14,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:50:14,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:50:14,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:50:14,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:50:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:14,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:50:14,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:50:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:14,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:50:14,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045881251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:50:14,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:50:14,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:50:14,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727001651] [2022-11-21 16:50:14,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:50:14,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:50:14,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:14,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:50:14,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:50:14,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 202 [2022-11-21 16:50:14,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 174.33333333333334) internal successors, (1046), 6 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:14,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:14,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 202 [2022-11-21 16:50:14,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:14,442 INFO L130 PetriNetUnfolder]: 1/96 cut-off events. [2022-11-21 16:50:14,442 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-11-21 16:50:14,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 96 events. 1/96 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 72. Up to 17 conditions per place. [2022-11-21 16:50:14,443 INFO L137 encePairwiseOnDemand]: 197/202 looper letters, 15 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2022-11-21 16:50:14,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 293 flow [2022-11-21 16:50:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:50:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:50:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1222 transitions. [2022-11-21 16:50:14,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8642149929278642 [2022-11-21 16:50:14,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1222 transitions. [2022-11-21 16:50:14,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1222 transitions. [2022-11-21 16:50:14,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:14,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1222 transitions. [2022-11-21 16:50:14,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.57142857142858) internal successors, (1222), 7 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:14,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:14,454 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:14,454 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 258 flow. Second operand 7 states and 1222 transitions. [2022-11-21 16:50:14,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 293 flow [2022-11-21 16:50:14,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 261 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-21 16:50:14,459 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 221 flow [2022-11-21 16:50:14,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2022-11-21 16:50:14,460 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2022-11-21 16:50:14,460 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 221 flow [2022-11-21 16:50:14,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.33333333333334) internal successors, (1046), 6 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:14,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:50:14,461 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:14,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:50:14,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-21 16:50:14,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:50:14,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1494796677, now seen corresponding path program 2 times [2022-11-21 16:50:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:14,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113224010] [2022-11-21 16:50:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:50:15,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:15,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113224010] [2022-11-21 16:50:15,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113224010] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:50:15,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066090006] [2022-11-21 16:50:15,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:50:15,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:50:15,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:50:15,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:50:15,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:50:15,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:50:15,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:50:15,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:50:15,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:50:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:50:15,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:50:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:50:15,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066090006] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:50:15,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:50:15,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 16:50:15,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656427570] [2022-11-21 16:50:15,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:50:15,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:50:15,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:50:15,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:50:15,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 202 [2022-11-21 16:50:15,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 221 flow. Second operand has 18 states, 18 states have (on average 159.72222222222223) internal successors, (2875), 18 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:15,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:50:15,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 202 [2022-11-21 16:50:15,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:50:16,052 INFO L130 PetriNetUnfolder]: 1/106 cut-off events. [2022-11-21 16:50:16,052 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-21 16:50:16,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 106 events. 1/106 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/108 useless extension candidates. Maximal degree in co-relation 121. Up to 7 conditions per place. [2022-11-21 16:50:16,053 INFO L137 encePairwiseOnDemand]: 191/202 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-11-21 16:50:16,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 396 flow [2022-11-21 16:50:16,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 16:50:16,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 16:50:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3802 transitions. [2022-11-21 16:50:16,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7842409240924092 [2022-11-21 16:50:16,061 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3802 transitions. [2022-11-21 16:50:16,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3802 transitions. [2022-11-21 16:50:16,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:50:16,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3802 transitions. [2022-11-21 16:50:16,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 158.41666666666666) internal successors, (3802), 24 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:16,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:16,082 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:16,082 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 221 flow. Second operand 24 states and 3802 transitions. [2022-11-21 16:50:16,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 396 flow [2022-11-21 16:50:16,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 371 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 16:50:16,085 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2022-11-21 16:50:16,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2022-11-21 16:50:16,085 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 33 predicate places. [2022-11-21 16:50:16,086 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2022-11-21 16:50:16,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 159.72222222222223) internal successors, (2875), 18 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:50:16,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-21 16:50:16,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-21 16:50:16,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-21 16:50:16,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-21 16:50:16,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:50:16,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:50:16,296 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-11-21 16:50:16,299 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 16:50:16,299 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:50:16,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:50:16 BasicIcfg [2022-11-21 16:50:16,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:50:16,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:50:16,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:50:16,304 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:50:16,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:50:11" (3/4) ... [2022-11-21 16:50:16,307 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:50:16,312 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 16:50:16,313 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 16:50:16,317 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-21 16:50:16,317 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 16:50:16,317 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:50:16,318 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:50:16,370 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:50:16,375 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:50:16,376 INFO L158 Benchmark]: Toolchain (without parser) took 5629.73ms. Allocated memory was 155.2MB in the beginning and 224.4MB in the end (delta: 69.2MB). Free memory was 110.0MB in the beginning and 176.0MB in the end (delta: -66.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 16:50:16,376 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 104.9MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:50:16,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.96ms. Allocated memory is still 155.2MB. Free memory was 109.4MB in the beginning and 98.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:50:16,377 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.71ms. Allocated memory is still 155.2MB. Free memory was 98.5MB in the beginning and 96.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:50:16,377 INFO L158 Benchmark]: Boogie Preprocessor took 30.41ms. Allocated memory is still 155.2MB. Free memory was 96.4MB in the beginning and 94.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:50:16,378 INFO L158 Benchmark]: RCFGBuilder took 624.39ms. Allocated memory is still 155.2MB. Free memory was 94.7MB in the beginning and 75.9MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-21 16:50:16,378 INFO L158 Benchmark]: TraceAbstraction took 4575.19ms. Allocated memory was 155.2MB in the beginning and 224.4MB in the end (delta: 69.2MB). Free memory was 75.4MB in the beginning and 180.0MB in the end (delta: -104.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:50:16,378 INFO L158 Benchmark]: Witness Printer took 71.31ms. Allocated memory is still 224.4MB. Free memory was 180.0MB in the beginning and 176.0MB in the end (delta: 3.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:50:16,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 104.9MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.96ms. Allocated memory is still 155.2MB. Free memory was 109.4MB in the beginning and 98.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.71ms. Allocated memory is still 155.2MB. Free memory was 98.5MB in the beginning and 96.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.41ms. Allocated memory is still 155.2MB. Free memory was 96.4MB in the beginning and 94.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 624.39ms. Allocated memory is still 155.2MB. Free memory was 94.7MB in the beginning and 75.9MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4575.19ms. Allocated memory was 155.2MB in the beginning and 224.4MB in the end (delta: 69.2MB). Free memory was 75.4MB in the beginning and 180.0MB in the end (delta: -104.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 71.31ms. Allocated memory is still 224.4MB. Free memory was 180.0MB in the beginning and 176.0MB in the end (delta: 3.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 264 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 218 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 218 mSDsluCounter, 94 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 286 IncrementalHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 20 mSDtfsCounter, 286 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 366 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=2, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 509 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 1193 SizeOfPredicates, 12 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 123/266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 16:50:16,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585ade9a-ae74-4893-801d-e661e1444bef/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE