./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 10:53:56,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:53:56,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:53:56,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:53:56,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:53:56,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:53:56,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:53:56,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:53:56,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:53:56,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:53:56,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:53:56,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:53:56,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:53:56,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:53:56,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:53:56,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:53:56,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:53:56,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:53:56,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:53:56,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:53:56,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:53:56,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:53:56,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:53:56,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:53:56,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:53:56,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:53:56,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:53:56,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:53:56,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:53:56,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:53:56,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:53:56,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:53:56,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:53:56,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:53:56,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:53:56,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:53:56,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:53:56,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:53:56,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:53:56,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:53:56,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:53:56,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 10:53:56,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:53:56,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:53:56,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:53:56,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:53:56,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:53:56,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:53:56,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:53:56,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:53:56,923 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:53:56,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:53:56,924 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:53:56,925 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:53:56,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:53:56,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:53:56,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:53:56,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:53:56,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:53:56,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:53:56,928 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 10:53:56,928 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:53:56,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:53:56,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:53:56,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:53:56,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:53:56,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:53:56,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:53:56,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:53:56,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:53:56,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:53:56,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:53:56,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:53:56,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:53:56,935 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:53:56,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:53:56,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:53:56,936 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_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2022-11-16 10:53:57,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:53:57,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:53:57,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:53:57,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:53:57,261 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:53:57,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-16 10:53:57,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/data/507ae576e/1641733fae8743e6a262638feaac92fb/FLAG414e9adf6 [2022-11-16 10:53:57,749 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:53:57,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-16 10:53:57,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/data/507ae576e/1641733fae8743e6a262638feaac92fb/FLAG414e9adf6 [2022-11-16 10:53:57,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/data/507ae576e/1641733fae8743e6a262638feaac92fb [2022-11-16 10:53:57,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:53:57,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:53:57,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:53:57,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:53:57,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:53:57,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f2a197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57, skipping insertion in model container [2022-11-16 10:53:57,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:53:57,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:53:58,075 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-16 10:53:58,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:53:58,090 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:53:58,119 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-16 10:53:58,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:53:58,138 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:53:58,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58 WrapperNode [2022-11-16 10:53:58,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:53:58,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:53:58,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:53:58,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:53:58,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (1/1) ... [2022-11-16 10:53:58,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (1/1) ... [2022-11-16 10:53:58,194 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 394 [2022-11-16 10:53:58,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:53:58,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:53:58,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:53:58,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:53:58,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (1/1) ... [2022-11-16 10:53:58,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (1/1) ... [2022-11-16 10:53:58,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (1/1) ... [2022-11-16 10:53:58,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (1/1) ... [2022-11-16 10:53:58,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (1/1) ... [2022-11-16 10:53:58,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (1/1) ... [2022-11-16 10:53:58,232 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (1/1) ... [2022-11-16 10:53:58,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (1/1) ... [2022-11-16 10:53:58,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:53:58,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:53:58,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:53:58,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:53:58,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (1/1) ... [2022-11-16 10:53:58,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:53:58,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:53:58,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:53:58,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:53:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:53:58,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:53:58,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:53:58,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:53:58,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 10:53:58,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 10:53:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 10:53:58,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 10:53:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 10:53:58,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 10:53:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 10:53:58,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 10:53:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:53:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 10:53:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 10:53:58,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 10:53:58,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:53:58,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:53:58,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:53:58,338 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 10:53:58,524 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:53:58,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:53:59,271 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:53:59,933 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:53:59,934 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-16 10:53:59,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:53:59 BoogieIcfgContainer [2022-11-16 10:53:59,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:53:59,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:53:59,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:53:59,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:53:59,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:53:57" (1/3) ... [2022-11-16 10:53:59,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7f51fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:59, skipping insertion in model container [2022-11-16 10:53:59,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:58" (2/3) ... [2022-11-16 10:53:59,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7f51fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:59, skipping insertion in model container [2022-11-16 10:53:59,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:53:59" (3/3) ... [2022-11-16 10:53:59,947 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2022-11-16 10:53:59,957 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:53:59,969 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:53:59,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-16 10:53:59,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:54:00,154 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 10:54:00,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 302 transitions, 636 flow [2022-11-16 10:54:00,354 INFO L130 PetriNetUnfolder]: 22/298 cut-off events. [2022-11-16 10:54:00,355 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 10:54:00,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 298 events. 22/298 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 301 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2022-11-16 10:54:00,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 302 transitions, 636 flow [2022-11-16 10:54:00,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 275 transitions, 571 flow [2022-11-16 10:54:00,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:54:00,417 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;@2c04b62e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:54:00,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-11-16 10:54:00,435 INFO L130 PetriNetUnfolder]: 3/82 cut-off events. [2022-11-16 10:54:00,436 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 10:54:00,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:00,437 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:00,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-16 10:54:00,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:00,442 INFO L85 PathProgramCache]: Analyzing trace with hash 187426028, now seen corresponding path program 1 times [2022-11-16 10:54:00,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:00,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933582993] [2022-11-16 10:54:00,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:00,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:00,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933582993] [2022-11-16 10:54:00,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933582993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:00,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:00,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:00,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748797289] [2022-11-16 10:54:00,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:00,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:00,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:01,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 302 [2022-11-16 10:54:01,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 275 transitions, 571 flow. Second operand has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:01,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 302 [2022-11-16 10:54:01,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:09,081 INFO L130 PetriNetUnfolder]: 13803/19665 cut-off events. [2022-11-16 10:54:09,081 INFO L131 PetriNetUnfolder]: For 3942/3948 co-relation queries the response was YES. [2022-11-16 10:54:09,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38277 conditions, 19665 events. 13803/19665 cut-off events. For 3942/3948 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 115227 event pairs, 6594 based on Foata normal form. 3470/10639 useless extension candidates. Maximal degree in co-relation 18677. Up to 8379 conditions per place. [2022-11-16 10:54:09,392 INFO L137 encePairwiseOnDemand]: 257/302 looper letters, 100 selfloop transitions, 14 changer transitions 7/302 dead transitions. [2022-11-16 10:54:09,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 302 transitions, 874 flow [2022-11-16 10:54:09,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1224 transitions. [2022-11-16 10:54:09,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8105960264900662 [2022-11-16 10:54:09,414 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1224 transitions. [2022-11-16 10:54:09,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1224 transitions. [2022-11-16 10:54:09,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:09,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1224 transitions. [2022-11-16 10:54:09,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.8) internal successors, (1224), 5 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,439 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,441 INFO L175 Difference]: Start difference. First operand has 267 places, 275 transitions, 571 flow. Second operand 5 states and 1224 transitions. [2022-11-16 10:54:09,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 302 transitions, 874 flow [2022-11-16 10:54:09,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 302 transitions, 848 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 10:54:09,478 INFO L231 Difference]: Finished difference. Result has 256 places, 254 transitions, 598 flow [2022-11-16 10:54:09,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=598, PETRI_PLACES=256, PETRI_TRANSITIONS=254} [2022-11-16 10:54:09,485 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, -11 predicate places. [2022-11-16 10:54:09,485 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 254 transitions, 598 flow [2022-11-16 10:54:09,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:09,487 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:09,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:54:09,488 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-16 10:54:09,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:09,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1085214959, now seen corresponding path program 1 times [2022-11-16 10:54:09,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:09,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774987177] [2022-11-16 10:54:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:09,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:09,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:09,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774987177] [2022-11-16 10:54:09,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774987177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:09,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316646655] [2022-11-16 10:54:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:09,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:09,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:09,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:09,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:54:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:09,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:54:09,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:10,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:10,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316646655] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:10,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:54:10,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 10:54:10,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323618837] [2022-11-16 10:54:10,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:10,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 10:54:10,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:10,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 10:54:10,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:54:10,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 302 [2022-11-16 10:54:10,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 254 transitions, 598 flow. Second operand has 12 states, 12 states have (on average 214.66666666666666) internal successors, (2576), 12 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:10,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:10,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 302 [2022-11-16 10:54:10,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:24,246 INFO L130 PetriNetUnfolder]: 34506/48988 cut-off events. [2022-11-16 10:54:24,246 INFO L131 PetriNetUnfolder]: For 3053/3068 co-relation queries the response was YES. [2022-11-16 10:54:24,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92446 conditions, 48988 events. 34506/48988 cut-off events. For 3053/3068 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 302906 event pairs, 16485 based on Foata normal form. 9/17792 useless extension candidates. Maximal degree in co-relation 73584. Up to 8370 conditions per place. [2022-11-16 10:54:24,764 INFO L137 encePairwiseOnDemand]: 279/302 looper letters, 214 selfloop transitions, 62 changer transitions 0/457 dead transitions. [2022-11-16 10:54:24,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 457 transitions, 1666 flow [2022-11-16 10:54:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 10:54:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 10:54:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4101 transitions. [2022-11-16 10:54:24,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7544150110375276 [2022-11-16 10:54:24,775 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4101 transitions. [2022-11-16 10:54:24,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4101 transitions. [2022-11-16 10:54:24,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:24,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4101 transitions. [2022-11-16 10:54:24,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 227.83333333333334) internal successors, (4101), 18 states have internal predecessors, (4101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:24,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 302.0) internal successors, (5738), 19 states have internal predecessors, (5738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:24,800 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 302.0) internal successors, (5738), 19 states have internal predecessors, (5738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:24,800 INFO L175 Difference]: Start difference. First operand has 256 places, 254 transitions, 598 flow. Second operand 18 states and 4101 transitions. [2022-11-16 10:54:24,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 457 transitions, 1666 flow [2022-11-16 10:54:24,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 457 transitions, 1658 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:24,814 INFO L231 Difference]: Finished difference. Result has 269 places, 296 transitions, 960 flow [2022-11-16 10:54:24,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=960, PETRI_PLACES=269, PETRI_TRANSITIONS=296} [2022-11-16 10:54:24,815 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, 2 predicate places. [2022-11-16 10:54:24,815 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 296 transitions, 960 flow [2022-11-16 10:54:24,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 214.66666666666666) internal successors, (2576), 12 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:24,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:24,818 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:24,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:25,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:25,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-16 10:54:25,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash 718075763, now seen corresponding path program 1 times [2022-11-16 10:54:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:25,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084610830] [2022-11-16 10:54:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:25,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:25,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:25,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084610830] [2022-11-16 10:54:25,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084610830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:25,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113937602] [2022-11-16 10:54:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:25,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:25,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:25,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:25,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2acbf26-3067-4afc-a3aa-3415d25fb265/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:54:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:25,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:54:25,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:25,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:25,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113937602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:25,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:54:25,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 10:54:25,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470524443] [2022-11-16 10:54:25,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:25,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:25,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:25,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:25,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 302 [2022-11-16 10:54:25,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 296 transitions, 960 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:25,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:25,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 302 [2022-11-16 10:54:25,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand