./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro --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 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 --- 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-8393723 [2022-11-18 20:11:21,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:11:21,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:11:21,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:11:21,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:11:21,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:11:21,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:11:21,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:11:21,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:11:21,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:11:21,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:11:21,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:11:21,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:11:21,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:11:21,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:11:21,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:11:21,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:11:21,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:11:21,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:11:21,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:11:21,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:11:21,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:11:21,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:11:21,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:11:21,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:11:21,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:11:21,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:11:21,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:11:21,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:11:21,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:11:21,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:11:21,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:11:21,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:11:21,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:11:21,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:11:21,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:11:21,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:11:21,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:11:21,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:11:21,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:11:21,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:11:21,158 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:11:21,186 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:11:21,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:11:21,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:11:21,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:11:21,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:11:21,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:11:21,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:11:21,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:11:21,190 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:11:21,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:11:21,192 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:11:21,192 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:11:21,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:11:21,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:11:21,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:11:21,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:11:21,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:11:21,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:11:21,193 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:11:21,194 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:11:21,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:11:21,194 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:11:21,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:11:21,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:11:21,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:11:21,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:11:21,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:11:21,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:11:21,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:11:21,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:11:21,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:11:21,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:11:21,199 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:11:21,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:11:21,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:11:21,199 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_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 [2022-11-18 20:11:21,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:11:21,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:11:21,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:11:21,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:11:21,571 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:11:21,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-11-18 20:11:21,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/data/2f391b748/3779145665294296be5e226abad19d0c/FLAG1a5389ade [2022-11-18 20:11:22,325 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:11:22,326 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-11-18 20:11:22,338 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/data/2f391b748/3779145665294296be5e226abad19d0c/FLAG1a5389ade [2022-11-18 20:11:22,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/data/2f391b748/3779145665294296be5e226abad19d0c [2022-11-18 20:11:22,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:11:22,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:11:22,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:11:22,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:11:22,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:11:22,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:11:22" (1/1) ... [2022-11-18 20:11:22,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e9e1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:22, skipping insertion in model container [2022-11-18 20:11:22,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:11:22" (1/1) ... [2022-11-18 20:11:22,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:11:22,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:11:23,056 WARN L234 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_cf06a067-3bb7-4298-80b3-35375c1978e5/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-11-18 20:11:23,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:11:23,073 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:11:23,097 WARN L234 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_cf06a067-3bb7-4298-80b3-35375c1978e5/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-11-18 20:11:23,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:11:23,118 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:11:23,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23 WrapperNode [2022-11-18 20:11:23,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:11:23,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:11:23,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:11:23,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:11:23,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (1/1) ... [2022-11-18 20:11:23,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (1/1) ... [2022-11-18 20:11:23,189 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 134 [2022-11-18 20:11:23,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:11:23,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:11:23,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:11:23,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:11:23,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (1/1) ... [2022-11-18 20:11:23,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (1/1) ... [2022-11-18 20:11:23,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (1/1) ... [2022-11-18 20:11:23,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (1/1) ... [2022-11-18 20:11:23,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (1/1) ... [2022-11-18 20:11:23,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (1/1) ... [2022-11-18 20:11:23,222 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (1/1) ... [2022-11-18 20:11:23,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (1/1) ... [2022-11-18 20:11:23,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:11:23,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:11:23,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:11:23,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:11:23,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (1/1) ... [2022-11-18 20:11:23,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:11:23,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:23,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:11:23,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:11:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:11:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:11:23,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:11:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:11:23,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:11:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:11:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:11:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:11:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:11:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:11:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:11:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:11:23,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:11:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:11:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:11:23,322 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:11:23,462 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:11:23,465 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:11:23,926 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:11:24,155 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:11:24,155 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:11:24,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:11:24 BoogieIcfgContainer [2022-11-18 20:11:24,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:11:24,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:11:24,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:11:24,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:11:24,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:11:22" (1/3) ... [2022-11-18 20:11:24,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f06aa5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:11:24, skipping insertion in model container [2022-11-18 20:11:24,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:23" (2/3) ... [2022-11-18 20:11:24,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f06aa5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:11:24, skipping insertion in model container [2022-11-18 20:11:24,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:11:24" (3/3) ... [2022-11-18 20:11:24,170 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2022-11-18 20:11:24,182 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:11:24,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:11:24,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 20:11:24,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:11:24,273 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:11:24,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 127 transitions, 270 flow [2022-11-18 20:11:24,400 INFO L130 PetriNetUnfolder]: 9/125 cut-off events. [2022-11-18 20:11:24,401 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:11:24,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 125 events. 9/125 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-18 20:11:24,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 127 transitions, 270 flow [2022-11-18 20:11:24,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 106 transitions, 221 flow [2022-11-18 20:11:24,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:11:24,435 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;@7a15cd86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:11:24,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-18 20:11:24,459 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-18 20:11:24,460 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:11:24,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:11:24,461 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:24,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:11:24,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:24,468 INFO L85 PathProgramCache]: Analyzing trace with hash 230370282, now seen corresponding path program 1 times [2022-11-18 20:11:24,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:24,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882906355] [2022-11-18 20:11:24,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:24,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:24,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:24,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882906355] [2022-11-18 20:11:24,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882906355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:24,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:24,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:11:24,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94962282] [2022-11-18 20:11:25,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:25,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:11:25,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:11:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:11:25,053 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-18 20:11:25,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 106 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:25,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:11:25,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-18 20:11:25,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:11:25,271 INFO L130 PetriNetUnfolder]: 19/166 cut-off events. [2022-11-18 20:11:25,271 INFO L131 PetriNetUnfolder]: For 20/22 co-relation queries the response was YES. [2022-11-18 20:11:25,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 166 events. 19/166 cut-off events. For 20/22 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 319 event pairs, 6 based on Foata normal form. 14/154 useless extension candidates. Maximal degree in co-relation 146. Up to 30 conditions per place. [2022-11-18 20:11:25,276 INFO L137 encePairwiseOnDemand]: 114/127 looper letters, 30 selfloop transitions, 4 changer transitions 2/114 dead transitions. [2022-11-18 20:11:25,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 314 flow [2022-11-18 20:11:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:11:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:11:25,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-11-18 20:11:25,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8472440944881889 [2022-11-18 20:11:25,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-11-18 20:11:25,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-11-18 20:11:25,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:11:25,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-11-18 20:11:25,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:25,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:25,337 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:25,340 INFO L175 Difference]: Start difference. First operand has 105 places, 106 transitions, 221 flow. Second operand 5 states and 538 transitions. [2022-11-18 20:11:25,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 314 flow [2022-11-18 20:11:25,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 114 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:11:25,357 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 228 flow [2022-11-18 20:11:25,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2022-11-18 20:11:25,364 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 2 predicate places. [2022-11-18 20:11:25,364 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 228 flow [2022-11-18 20:11:25,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:25,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:11:25,365 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] [2022-11-18 20:11:25,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:11:25,366 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:11:25,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:25,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1106383987, now seen corresponding path program 1 times [2022-11-18 20:11:25,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:25,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117499032] [2022-11-18 20:11:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:25,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:25,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:25,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:25,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117499032] [2022-11-18 20:11:25,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117499032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:25,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:25,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:11:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098959268] [2022-11-18 20:11:25,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:25,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:11:25,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:11:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:11:25,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 127 [2022-11-18 20:11:25,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:25,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:11:25,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 127 [2022-11-18 20:11:25,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:11:26,003 INFO L130 PetriNetUnfolder]: 10/150 cut-off events. [2022-11-18 20:11:26,003 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-18 20:11:26,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 150 events. 10/150 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 243 event pairs, 3 based on Foata normal form. 4/140 useless extension candidates. Maximal degree in co-relation 91. Up to 27 conditions per place. [2022-11-18 20:11:26,005 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 19 selfloop transitions, 6 changer transitions 4/106 dead transitions. [2022-11-18 20:11:26,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 302 flow [2022-11-18 20:11:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:11:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:11:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 705 transitions. [2022-11-18 20:11:26,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7930258717660292 [2022-11-18 20:11:26,010 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 705 transitions. [2022-11-18 20:11:26,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 705 transitions. [2022-11-18 20:11:26,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:11:26,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 705 transitions. [2022-11-18 20:11:26,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.71428571428571) internal successors, (705), 7 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:26,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:26,018 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:26,018 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 228 flow. Second operand 7 states and 705 transitions. [2022-11-18 20:11:26,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 302 flow [2022-11-18 20:11:26,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:11:26,023 INFO L231 Difference]: Finished difference. Result has 112 places, 100 transitions, 250 flow [2022-11-18 20:11:26,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2022-11-18 20:11:26,025 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 7 predicate places. [2022-11-18 20:11:26,025 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 250 flow [2022-11-18 20:11:26,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:26,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:11:26,027 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:26,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:11:26,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:11:26,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1743070262, now seen corresponding path program 1 times [2022-11-18 20:11:26,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:26,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131082867] [2022-11-18 20:11:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:26,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:26,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:26,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131082867] [2022-11-18 20:11:26,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131082867] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:26,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778605912] [2022-11-18 20:11:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:26,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:26,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:26,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:26,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:11:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:26,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:11:26,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:26,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:26,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778605912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:26,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:26,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:11:26,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927652647] [2022-11-18 20:11:26,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:26,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:11:26,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:11:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:11:26,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-18 20:11:26,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 100.66666666666667) internal successors, (1208), 12 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:26,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:11:26,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-18 20:11:26,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:11:26,928 INFO L130 PetriNetUnfolder]: 37/289 cut-off events. [2022-11-18 20:11:26,928 INFO L131 PetriNetUnfolder]: For 40/44 co-relation queries the response was YES. [2022-11-18 20:11:26,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 289 events. 37/289 cut-off events. For 40/44 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 829 event pairs, 12 based on Foata normal form. 3/252 useless extension candidates. Maximal degree in co-relation 427. Up to 49 conditions per place. [2022-11-18 20:11:26,938 INFO L137 encePairwiseOnDemand]: 120/127 looper letters, 55 selfloop transitions, 18 changer transitions 0/151 dead transitions. [2022-11-18 20:11:26,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 151 transitions, 562 flow [2022-11-18 20:11:26,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:11:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:11:26,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1840 transitions. [2022-11-18 20:11:26,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8048993875765529 [2022-11-18 20:11:26,946 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1840 transitions. [2022-11-18 20:11:26,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1840 transitions. [2022-11-18 20:11:26,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:11:26,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1840 transitions. [2022-11-18 20:11:26,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:26,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:26,966 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:26,966 INFO L175 Difference]: Start difference. First operand has 112 places, 100 transitions, 250 flow. Second operand 18 states and 1840 transitions. [2022-11-18 20:11:26,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 151 transitions, 562 flow [2022-11-18 20:11:26,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 151 transitions, 550 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:11:26,979 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 344 flow [2022-11-18 20:11:26,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=344, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2022-11-18 20:11:26,983 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 22 predicate places. [2022-11-18 20:11:26,983 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 344 flow [2022-11-18 20:11:26,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 100.66666666666667) internal successors, (1208), 12 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:26,984 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:11:26,985 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:27,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:27,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:27,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:11:27,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:27,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1799397105, now seen corresponding path program 1 times [2022-11-18 20:11:27,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:27,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365928941] [2022-11-18 20:11:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:27,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:27,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:27,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365928941] [2022-11-18 20:11:27,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365928941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:27,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159970161] [2022-11-18 20:11:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:27,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:27,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:27,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:27,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:11:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:27,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:11:27,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:27,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:11:27,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159970161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:27,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:11:27,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:11:27,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243066990] [2022-11-18 20:11:27,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:27,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:11:27,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:27,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:11:27,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:11:27,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-18 20:11:27,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:27,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:11:27,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-18 20:11:27,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:11:27,902 INFO L130 PetriNetUnfolder]: 37/285 cut-off events. [2022-11-18 20:11:27,902 INFO L131 PetriNetUnfolder]: For 74/78 co-relation queries the response was YES. [2022-11-18 20:11:27,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 285 events. 37/285 cut-off events. For 74/78 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 806 event pairs, 12 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 385. Up to 84 conditions per place. [2022-11-18 20:11:27,905 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 23 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2022-11-18 20:11:27,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 112 transitions, 395 flow [2022-11-18 20:11:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:11:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:11:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 712 transitions. [2022-11-18 20:11:27,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8008998875140607 [2022-11-18 20:11:27,909 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 712 transitions. [2022-11-18 20:11:27,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 712 transitions. [2022-11-18 20:11:27,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:11:27,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 712 transitions. [2022-11-18 20:11:27,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:27,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:27,918 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:27,918 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 344 flow. Second operand 7 states and 712 transitions. [2022-11-18 20:11:27,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 112 transitions, 395 flow [2022-11-18 20:11:27,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 112 transitions, 363 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:11:27,930 INFO L231 Difference]: Finished difference. Result has 123 places, 108 transitions, 307 flow [2022-11-18 20:11:27,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=123, PETRI_TRANSITIONS=108} [2022-11-18 20:11:27,933 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 18 predicate places. [2022-11-18 20:11:27,933 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 108 transitions, 307 flow [2022-11-18 20:11:27,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:27,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:11:27,934 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:27,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:28,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:28,141 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:11:28,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:28,142 INFO L85 PathProgramCache]: Analyzing trace with hash -244922221, now seen corresponding path program 1 times [2022-11-18 20:11:28,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:28,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276767623] [2022-11-18 20:11:28,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:28,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:28,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:28,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276767623] [2022-11-18 20:11:28,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276767623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:28,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539820390] [2022-11-18 20:11:28,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:28,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:28,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:28,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:28,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:11:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:28,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:11:28,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:11:28,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:11:28,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539820390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:28,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:11:28,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-18 20:11:28,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850721449] [2022-11-18 20:11:28,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:28,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:11:28,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:11:28,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:11:28,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 127 [2022-11-18 20:11:28,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 108 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:28,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:11:28,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 127 [2022-11-18 20:11:28,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:11:28,818 INFO L130 PetriNetUnfolder]: 17/245 cut-off events. [2022-11-18 20:11:28,818 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-18 20:11:28,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 245 events. 17/245 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 553 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 305. Up to 32 conditions per place. [2022-11-18 20:11:28,820 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 3 selfloop transitions, 3 changer transitions 36/106 dead transitions. [2022-11-18 20:11:28,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 106 transitions, 321 flow [2022-11-18 20:11:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:11:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:11:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2022-11-18 20:11:28,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.844488188976378 [2022-11-18 20:11:28,822 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 429 transitions. [2022-11-18 20:11:28,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 429 transitions. [2022-11-18 20:11:28,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:11:28,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 429 transitions. [2022-11-18 20:11:28,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:28,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:28,826 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:28,826 INFO L175 Difference]: Start difference. First operand has 123 places, 108 transitions, 307 flow. Second operand 4 states and 429 transitions. [2022-11-18 20:11:28,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 106 transitions, 321 flow [2022-11-18 20:11:28,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 106 transitions, 307 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:11:28,830 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 209 flow [2022-11-18 20:11:28,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=119, PETRI_TRANSITIONS=70} [2022-11-18 20:11:28,831 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 14 predicate places. [2022-11-18 20:11:28,832 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 209 flow [2022-11-18 20:11:28,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:28,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:11:28,832 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:28,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:11:29,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:29,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:11:29,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:29,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1997806614, now seen corresponding path program 2 times [2022-11-18 20:11:29,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:29,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347433331] [2022-11-18 20:11:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:29,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:29,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:29,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347433331] [2022-11-18 20:11:29,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347433331] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:29,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764181479] [2022-11-18 20:11:29,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:11:29,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:29,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:29,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:29,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:11:29,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:11:29,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:29,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:11:29,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:11:29,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:11:29,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764181479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:29,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:29,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:11:29,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524810560] [2022-11-18 20:11:29,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:29,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:11:29,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:29,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:11:29,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:11:29,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 127 [2022-11-18 20:11:29,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 70 transitions, 209 flow. Second operand has 18 states, 18 states have (on average 91.61111111111111) internal successors, (1649), 18 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:29,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:11:29,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 127 [2022-11-18 20:11:29,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:11:30,568 INFO L130 PetriNetUnfolder]: 1/103 cut-off events. [2022-11-18 20:11:30,569 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-18 20:11:30,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 103 events. 1/103 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/105 useless extension candidates. Maximal degree in co-relation 200. Up to 7 conditions per place. [2022-11-18 20:11:30,569 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2022-11-18 20:11:30,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 379 flow [2022-11-18 20:11:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:11:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 20:11:30,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2169 transitions. [2022-11-18 20:11:30,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7116141732283464 [2022-11-18 20:11:30,575 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2169 transitions. [2022-11-18 20:11:30,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2169 transitions. [2022-11-18 20:11:30,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:11:30,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2169 transitions. [2022-11-18 20:11:30,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 90.375) internal successors, (2169), 24 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:30,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 127.0) internal successors, (3175), 25 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:30,592 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 127.0) internal successors, (3175), 25 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:30,593 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 209 flow. Second operand 24 states and 2169 transitions. [2022-11-18 20:11:30,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 379 flow [2022-11-18 20:11:30,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 363 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 20:11:30,596 INFO L231 Difference]: Finished difference. Result has 96 places, 0 transitions, 0 flow [2022-11-18 20:11:30,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=96, PETRI_TRANSITIONS=0} [2022-11-18 20:11:30,597 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, -9 predicate places. [2022-11-18 20:11:30,597 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 0 transitions, 0 flow [2022-11-18 20:11:30,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 91.61111111111111) internal successors, (1649), 18 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:30,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-11-18 20:11:30,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-18 20:11:30,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-18 20:11:30,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-18 20:11:30,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-18 20:11:30,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-11-18 20:11:30,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2022-11-18 20:11:30,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-11-18 20:11:30,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-18 20:11:30,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-18 20:11:30,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-18 20:11:30,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-18 20:11:30,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:30,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:11:30,813 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-11-18 20:11:30,819 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:11:30,820 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:11:30,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:11:30 BasicIcfg [2022-11-18 20:11:30,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:11:30,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:11:30,827 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:11:30,828 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:11:30,828 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:11:24" (3/4) ... [2022-11-18 20:11:30,834 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:11:30,841 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:11:30,842 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:11:30,848 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-18 20:11:30,848 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:11:30,848 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:11:30,848 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:11:30,887 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:11:30,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:11:30,888 INFO L158 Benchmark]: Toolchain (without parser) took 8228.18ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 95.1MB in the beginning and 47.3MB in the end (delta: 47.9MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. [2022-11-18 20:11:30,889 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:11:30,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.63ms. Allocated memory is still 127.9MB. Free memory was 94.8MB in the beginning and 104.3MB in the end (delta: -9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:11:30,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.81ms. Allocated memory is still 127.9MB. Free memory was 104.3MB in the beginning and 102.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:11:30,890 INFO L158 Benchmark]: Boogie Preprocessor took 36.03ms. Allocated memory is still 127.9MB. Free memory was 102.2MB in the beginning and 100.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:11:30,891 INFO L158 Benchmark]: RCFGBuilder took 930.84ms. Allocated memory is still 127.9MB. Free memory was 100.5MB in the beginning and 77.0MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-18 20:11:30,892 INFO L158 Benchmark]: TraceAbstraction took 6665.41ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 76.5MB in the beginning and 49.4MB in the end (delta: 27.2MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2022-11-18 20:11:30,892 INFO L158 Benchmark]: Witness Printer took 60.37ms. Allocated memory is still 157.3MB. Free memory was 49.4MB in the beginning and 47.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:11:30,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.63ms. Allocated memory is still 127.9MB. Free memory was 94.8MB in the beginning and 104.3MB in the end (delta: -9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.81ms. Allocated memory is still 127.9MB. Free memory was 104.3MB in the beginning and 102.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.03ms. Allocated memory is still 127.9MB. Free memory was 102.2MB in the beginning and 100.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 930.84ms. Allocated memory is still 127.9MB. Free memory was 100.5MB in the beginning and 77.0MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6665.41ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 76.5MB in the beginning and 49.4MB in the end (delta: 27.2MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. * Witness Printer took 60.37ms. Allocated memory is still 157.3MB. Free memory was 49.4MB in the beginning and 47.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: 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, 139 locations, 12 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: 6.5s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 374 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 374 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 377 IncrementalHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 30 mSDtfsCounter, 377 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 510 GetRequests, 420 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, InterpolantAutomatonStates: 65, 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, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 689 NumberOfCodeBlocks, 653 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 830 ConstructedInterpolants, 0 QuantifiedInterpolants, 1644 SizeOfPredicates, 13 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 124/268 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:11:30,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf06a067-3bb7-4298-80b3-35375c1978e5/bin/uautomizer-TMbwUNV5ro/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