./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/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_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/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_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/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 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --- 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 19:54:44,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:54:44,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:54:44,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:54:44,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:54:44,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:54:44,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:54:44,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:54:44,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:54:44,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:54:44,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:54:44,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:54:44,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:54:44,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:54:44,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:54:44,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:54:44,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:54:44,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:54:44,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:54:44,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:54:44,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:54:44,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:54:44,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:54:44,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:54:44,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:54:44,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:54:44,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:54:44,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:54:44,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:54:44,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:54:44,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:54:44,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:54:44,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:54:44,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:54:44,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:54:44,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:54:44,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:54:44,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:54:44,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:54:44,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:54:44,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:54:44,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:54:44,999 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:54:45,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:54:45,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:54:45,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:54:45,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:54:45,002 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:54:45,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:54:45,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:54:45,003 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:54:45,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:54:45,004 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:54:45,004 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:54:45,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:54:45,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:54:45,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:54:45,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:54:45,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:54:45,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:54:45,006 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:54:45,006 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:54:45,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:54:45,007 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:54:45,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:54:45,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:54:45,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:54:45,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:54:45,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:54:45,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:54:45,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:54:45,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:54:45,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:54:45,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:54:45,010 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:54:45,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:54:45,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:54:45,011 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_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 [2022-11-18 19:54:45,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:54:45,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:54:45,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:54:45,276 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:54:45,277 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:54:45,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-11-18 19:54:45,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/data/a957e6247/909a7f355f244539808a138e2763f6d9/FLAG03db2894a [2022-11-18 19:54:45,780 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:54:45,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-11-18 19:54:45,795 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/data/a957e6247/909a7f355f244539808a138e2763f6d9/FLAG03db2894a [2022-11-18 19:54:46,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/data/a957e6247/909a7f355f244539808a138e2763f6d9 [2022-11-18 19:54:46,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:54:46,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:54:46,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:54:46,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:54:46,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:54:46,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be540c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46, skipping insertion in model container [2022-11-18 19:54:46,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:54:46,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:54:46,462 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_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-11-18 19:54:46,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:54:46,475 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:54:46,498 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_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-11-18 19:54:46,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:54:46,514 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:54:46,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46 WrapperNode [2022-11-18 19:54:46,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:54:46,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:54:46,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:54:46,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:54:46,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,555 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 156 [2022-11-18 19:54:46,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:54:46,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:54:46,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:54:46,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:54:46,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,623 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:54:46,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:54:46,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:54:46,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:54:46,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (1/1) ... [2022-11-18 19:54:46,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:54:46,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:46,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:54:46,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:54:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:54:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:54:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:54:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:54:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:54:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:54:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:54:46,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:54:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:54:46,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:54:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:54:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:54:46,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:54:46,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:54:46,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:54:46,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:54:46,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:54:46,716 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 19:54:46,859 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:54:46,861 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:54:47,321 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:54:47,403 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:54:47,419 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 19:54:47,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:54:47 BoogieIcfgContainer [2022-11-18 19:54:47,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:54:47,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:54:47,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:54:47,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:54:47,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:54:46" (1/3) ... [2022-11-18 19:54:47,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6445e425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:54:47, skipping insertion in model container [2022-11-18 19:54:47,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:54:46" (2/3) ... [2022-11-18 19:54:47,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6445e425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:54:47, skipping insertion in model container [2022-11-18 19:54:47,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:54:47" (3/3) ... [2022-11-18 19:54:47,435 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2022-11-18 19:54:47,464 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:54:47,474 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:54:47,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-18 19:54:47,474 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:54:47,592 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:54:47,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 253 transitions, 530 flow [2022-11-18 19:54:47,748 INFO L130 PetriNetUnfolder]: 20/250 cut-off events. [2022-11-18 19:54:47,748 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:54:47,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 250 events. 20/250 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 237 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 206. Up to 3 conditions per place. [2022-11-18 19:54:47,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 253 transitions, 530 flow [2022-11-18 19:54:47,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 229 transitions, 473 flow [2022-11-18 19:54:47,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:54:47,778 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;@62dabd4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:54:47,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-18 19:54:47,793 INFO L130 PetriNetUnfolder]: 3/60 cut-off events. [2022-11-18 19:54:47,793 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:54:47,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:47,794 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:47,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:54:47,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash 310039223, now seen corresponding path program 1 times [2022-11-18 19:54:47,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:47,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863843025] [2022-11-18 19:54:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:47,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:48,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863843025] [2022-11-18 19:54:48,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863843025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:48,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:48,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:54:48,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126271672] [2022-11-18 19:54:48,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:48,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:54:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:48,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:54:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:54:48,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 253 [2022-11-18 19:54:48,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 229 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 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 19:54:48,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:48,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 253 [2022-11-18 19:54:48,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:48,835 INFO L130 PetriNetUnfolder]: 75/517 cut-off events. [2022-11-18 19:54:48,835 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-11-18 19:54:48,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 517 events. 75/517 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1850 event pairs, 34 based on Foata normal form. 68/475 useless extension candidates. Maximal degree in co-relation 369. Up to 93 conditions per place. [2022-11-18 19:54:48,844 INFO L137 encePairwiseOnDemand]: 221/253 looper letters, 66 selfloop transitions, 14 changer transitions 6/252 dead transitions. [2022-11-18 19:54:48,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 252 transitions, 694 flow [2022-11-18 19:54:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:54:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:54:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1069 transitions. [2022-11-18 19:54:48,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8450592885375494 [2022-11-18 19:54:48,862 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1069 transitions. [2022-11-18 19:54:48,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1069 transitions. [2022-11-18 19:54:48,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:48,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1069 transitions. [2022-11-18 19:54:48,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.8) internal successors, (1069), 5 states have internal predecessors, (1069), 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 19:54:48,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 19:54:48,884 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 19:54:48,886 INFO L175 Difference]: Start difference. First operand has 220 places, 229 transitions, 473 flow. Second operand 5 states and 1069 transitions. [2022-11-18 19:54:48,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 252 transitions, 694 flow [2022-11-18 19:54:48,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 252 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:54:48,897 INFO L231 Difference]: Finished difference. Result has 222 places, 222 transitions, 532 flow [2022-11-18 19:54:48,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=532, PETRI_PLACES=222, PETRI_TRANSITIONS=222} [2022-11-18 19:54:48,903 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 2 predicate places. [2022-11-18 19:54:48,903 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 222 transitions, 532 flow [2022-11-18 19:54:48,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 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 19:54:48,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:48,904 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:48,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:54:48,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:54:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2061385864, now seen corresponding path program 1 times [2022-11-18 19:54:48,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:48,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356237025] [2022-11-18 19:54:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:48,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:49,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:49,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:49,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356237025] [2022-11-18 19:54:49,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356237025] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:49,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431789050] [2022-11-18 19:54:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:49,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:49,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:49,075 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:49,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:54:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:49,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:54:49,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:49,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:49,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431789050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:49,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:49,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:54:49,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816819071] [2022-11-18 19:54:49,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:49,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:54:49,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:49,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:54:49,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:54:49,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 253 [2022-11-18 19:54:49,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 222 transitions, 532 flow. Second operand has 12 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 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 19:54:49,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:49,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 253 [2022-11-18 19:54:49,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:50,158 INFO L130 PetriNetUnfolder]: 186/1153 cut-off events. [2022-11-18 19:54:50,158 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-11-18 19:54:50,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1153 events. 186/1153 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6115 event pairs, 85 based on Foata normal form. 9/917 useless extension candidates. Maximal degree in co-relation 1016. Up to 84 conditions per place. [2022-11-18 19:54:50,174 INFO L137 encePairwiseOnDemand]: 230/253 looper letters, 129 selfloop transitions, 62 changer transitions 0/357 dead transitions. [2022-11-18 19:54:50,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 357 transitions, 1286 flow [2022-11-18 19:54:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:54:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:54:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3674 transitions. [2022-11-18 19:54:50,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8067632850241546 [2022-11-18 19:54:50,183 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3674 transitions. [2022-11-18 19:54:50,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3674 transitions. [2022-11-18 19:54:50,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:50,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3674 transitions. [2022-11-18 19:54:50,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 204.11111111111111) internal successors, (3674), 18 states have internal predecessors, (3674), 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 19:54:50,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 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 19:54:50,206 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 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 19:54:50,206 INFO L175 Difference]: Start difference. First operand has 222 places, 222 transitions, 532 flow. Second operand 18 states and 3674 transitions. [2022-11-18 19:54:50,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 357 transitions, 1286 flow [2022-11-18 19:54:50,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 357 transitions, 1278 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:54:50,221 INFO L231 Difference]: Finished difference. Result has 236 places, 264 transitions, 894 flow [2022-11-18 19:54:50,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=894, PETRI_PLACES=236, PETRI_TRANSITIONS=264} [2022-11-18 19:54:50,223 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 16 predicate places. [2022-11-18 19:54:50,223 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 264 transitions, 894 flow [2022-11-18 19:54:50,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 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 19:54:50,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:50,226 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:50,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:54:50,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:50,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:54:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash -521547190, now seen corresponding path program 1 times [2022-11-18 19:54:50,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:50,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585789915] [2022-11-18 19:54:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:50,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,559 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 19:54:50,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:50,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585789915] [2022-11-18 19:54:50,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585789915] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:50,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003079508] [2022-11-18 19:54:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:50,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:50,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:50,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:50,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:54:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:54:50,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:50,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:54:50,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003079508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:50,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:54:50,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:54:50,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824589344] [2022-11-18 19:54:50,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:50,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:54:50,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:50,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:54:50,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:54:50,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 253 [2022-11-18 19:54:50,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 264 transitions, 894 flow. Second operand has 6 states, 6 states have (on average 195.33333333333334) internal successors, (1172), 6 states have internal predecessors, (1172), 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 19:54:50,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:50,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 253 [2022-11-18 19:54:50,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:51,177 INFO L130 PetriNetUnfolder]: 186/1141 cut-off events. [2022-11-18 19:54:51,178 INFO L131 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2022-11-18 19:54:51,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 1141 events. 186/1141 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6048 event pairs, 85 based on Foata normal form. 12/908 useless extension candidates. Maximal degree in co-relation 1363. Up to 264 conditions per place. [2022-11-18 19:54:51,191 INFO L137 encePairwiseOnDemand]: 236/253 looper letters, 67 selfloop transitions, 43 changer transitions 0/276 dead transitions. [2022-11-18 19:54:51,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 276 transitions, 1093 flow [2022-11-18 19:54:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:54:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:54:51,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1431 transitions. [2022-11-18 19:54:51,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8080180688876341 [2022-11-18 19:54:51,216 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1431 transitions. [2022-11-18 19:54:51,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1431 transitions. [2022-11-18 19:54:51,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:51,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1431 transitions. [2022-11-18 19:54:51,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 204.42857142857142) internal successors, (1431), 7 states have internal predecessors, (1431), 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 19:54:51,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 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 19:54:51,226 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 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 19:54:51,226 INFO L175 Difference]: Start difference. First operand has 236 places, 264 transitions, 894 flow. Second operand 7 states and 1431 transitions. [2022-11-18 19:54:51,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 276 transitions, 1093 flow [2022-11-18 19:54:51,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 276 transitions, 977 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 19:54:51,240 INFO L231 Difference]: Finished difference. Result has 230 places, 252 transitions, 783 flow [2022-11-18 19:54:51,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=783, PETRI_PLACES=230, PETRI_TRANSITIONS=252} [2022-11-18 19:54:51,242 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 10 predicate places. [2022-11-18 19:54:51,242 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 252 transitions, 783 flow [2022-11-18 19:54:51,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.33333333333334) internal successors, (1172), 6 states have internal predecessors, (1172), 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 19:54:51,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:51,244 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 19:54:51,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:51,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:51,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:54:51,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:51,450 INFO L85 PathProgramCache]: Analyzing trace with hash 462832635, now seen corresponding path program 2 times [2022-11-18 19:54:51,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:51,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395929101] [2022-11-18 19:54:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:51,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:51,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:51,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395929101] [2022-11-18 19:54:51,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395929101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:51,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423889863] [2022-11-18 19:54:51,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:51,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:51,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:51,799 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:51,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:54:51,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:54:51,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:51,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:54:51,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 19:54:52,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 19:54:52,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423889863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:52,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:52,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 19:54:52,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939470602] [2022-11-18 19:54:52,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:52,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:54:52,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:52,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:54:52,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:54:52,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 253 [2022-11-18 19:54:52,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 252 transitions, 783 flow. Second operand has 18 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 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 19:54:52,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:52,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 253 [2022-11-18 19:54:52,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:54,293 INFO L130 PetriNetUnfolder]: 1842/5394 cut-off events. [2022-11-18 19:54:54,294 INFO L131 PetriNetUnfolder]: For 409/409 co-relation queries the response was YES. [2022-11-18 19:54:54,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8694 conditions, 5394 events. 1842/5394 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 42542 event pairs, 1127 based on Foata normal form. 6/3531 useless extension candidates. Maximal degree in co-relation 6938. Up to 427 conditions per place. [2022-11-18 19:54:54,339 INFO L137 encePairwiseOnDemand]: 226/253 looper letters, 224 selfloop transitions, 81 changer transitions 0/445 dead transitions. [2022-11-18 19:54:54,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 445 transitions, 1882 flow [2022-11-18 19:54:54,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:54:54,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 19:54:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4319 transitions. [2022-11-18 19:54:54,352 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7112977602108037 [2022-11-18 19:54:54,352 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4319 transitions. [2022-11-18 19:54:54,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4319 transitions. [2022-11-18 19:54:54,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:54,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4319 transitions. [2022-11-18 19:54:54,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 179.95833333333334) internal successors, (4319), 24 states have internal predecessors, (4319), 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 19:54:54,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 253.0) internal successors, (6325), 25 states have internal predecessors, (6325), 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 19:54:54,377 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 253.0) internal successors, (6325), 25 states have internal predecessors, (6325), 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 19:54:54,377 INFO L175 Difference]: Start difference. First operand has 230 places, 252 transitions, 783 flow. Second operand 24 states and 4319 transitions. [2022-11-18 19:54:54,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 445 transitions, 1882 flow [2022-11-18 19:54:54,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 445 transitions, 1791 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 19:54:54,386 INFO L231 Difference]: Finished difference. Result has 242 places, 268 transitions, 946 flow [2022-11-18 19:54:54,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=946, PETRI_PLACES=242, PETRI_TRANSITIONS=268} [2022-11-18 19:54:54,387 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 22 predicate places. [2022-11-18 19:54:54,388 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 268 transitions, 946 flow [2022-11-18 19:54:54,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 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 19:54:54,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:54,390 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:54,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:54,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:54,596 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:54:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1911360043, now seen corresponding path program 1 times [2022-11-18 19:54:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:54,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139802715] [2022-11-18 19:54:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:54,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:54,725 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 19:54:54,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:54,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139802715] [2022-11-18 19:54:54,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139802715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:54,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:54,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:54:54,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861361598] [2022-11-18 19:54:54,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:54,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:54:54,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:54,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:54:54,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:54:54,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 253 [2022-11-18 19:54:54,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 268 transitions, 946 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 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 19:54:54,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:54,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 253 [2022-11-18 19:54:54,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:55,234 INFO L130 PetriNetUnfolder]: 512/2321 cut-off events. [2022-11-18 19:54:55,235 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-11-18 19:54:55,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3711 conditions, 2321 events. 512/2321 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 17203 event pairs, 259 based on Foata normal form. 0/1915 useless extension candidates. Maximal degree in co-relation 654. Up to 596 conditions per place. [2022-11-18 19:54:55,261 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 21 selfloop transitions, 2 changer transitions 0/277 dead transitions. [2022-11-18 19:54:55,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 277 transitions, 1014 flow [2022-11-18 19:54:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:54:55,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:54:55,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2022-11-18 19:54:55,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9183135704874835 [2022-11-18 19:54:55,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2022-11-18 19:54:55,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2022-11-18 19:54:55,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:55,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2022-11-18 19:54:55,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 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 19:54:55,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 19:54:55,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 19:54:55,270 INFO L175 Difference]: Start difference. First operand has 242 places, 268 transitions, 946 flow. Second operand 3 states and 697 transitions. [2022-11-18 19:54:55,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 277 transitions, 1014 flow [2022-11-18 19:54:55,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 277 transitions, 891 flow, removed 12 selfloop flow, removed 15 redundant places. [2022-11-18 19:54:55,278 INFO L231 Difference]: Finished difference. Result has 230 places, 269 transitions, 837 flow [2022-11-18 19:54:55,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=837, PETRI_PLACES=230, PETRI_TRANSITIONS=269} [2022-11-18 19:54:55,279 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 10 predicate places. [2022-11-18 19:54:55,280 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 269 transitions, 837 flow [2022-11-18 19:54:55,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 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 19:54:55,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:55,281 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:55,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:54:55,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:54:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:55,282 INFO L85 PathProgramCache]: Analyzing trace with hash 99647845, now seen corresponding path program 1 times [2022-11-18 19:54:55,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:55,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263474966] [2022-11-18 19:54:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:55,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:55,393 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 19:54:55,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:55,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263474966] [2022-11-18 19:54:55,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263474966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:55,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:55,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:54:55,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515148328] [2022-11-18 19:54:55,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:55,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:54:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:55,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:54:55,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:54:55,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 253 [2022-11-18 19:54:55,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 269 transitions, 837 flow. Second operand has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 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 19:54:55,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:55,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 253 [2022-11-18 19:54:55,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:57,667 INFO L130 PetriNetUnfolder]: 3830/10945 cut-off events. [2022-11-18 19:54:57,667 INFO L131 PetriNetUnfolder]: For 732/1299 co-relation queries the response was YES. [2022-11-18 19:54:57,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20190 conditions, 10945 events. 3830/10945 cut-off events. For 732/1299 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 112665 event pairs, 2562 based on Foata normal form. 434/9216 useless extension candidates. Maximal degree in co-relation 4070. Up to 3487 conditions per place. [2022-11-18 19:54:57,784 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 46 selfloop transitions, 4 changer transitions 0/298 dead transitions. [2022-11-18 19:54:57,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 298 transitions, 1018 flow [2022-11-18 19:54:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:54:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:54:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1137 transitions. [2022-11-18 19:54:57,787 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8988142292490119 [2022-11-18 19:54:57,787 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1137 transitions. [2022-11-18 19:54:57,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1137 transitions. [2022-11-18 19:54:57,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:57,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1137 transitions. [2022-11-18 19:54:57,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.4) internal successors, (1137), 5 states have internal predecessors, (1137), 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 19:54:57,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 19:54:57,794 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 19:54:57,794 INFO L175 Difference]: Start difference. First operand has 230 places, 269 transitions, 837 flow. Second operand 5 states and 1137 transitions. [2022-11-18 19:54:57,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 298 transitions, 1018 flow [2022-11-18 19:54:57,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 298 transitions, 1016 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:54:57,802 INFO L231 Difference]: Finished difference. Result has 236 places, 272 transitions, 865 flow [2022-11-18 19:54:57,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=865, PETRI_PLACES=236, PETRI_TRANSITIONS=272} [2022-11-18 19:54:57,805 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 16 predicate places. [2022-11-18 19:54:57,805 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 272 transitions, 865 flow [2022-11-18 19:54:57,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 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 19:54:57,806 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:57,806 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:57,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:54:57,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:54:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:57,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1428978962, now seen corresponding path program 1 times [2022-11-18 19:54:57,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:57,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495429734] [2022-11-18 19:54:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:57,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:57,914 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 19:54:57,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:57,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495429734] [2022-11-18 19:54:57,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495429734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:57,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:57,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:54:57,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893418494] [2022-11-18 19:54:57,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:57,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:54:57,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:57,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:54:57,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:54:57,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-18 19:54:57,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 272 transitions, 865 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:57,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:57,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-18 19:54:57,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:59,369 INFO L130 PetriNetUnfolder]: 1786/6759 cut-off events. [2022-11-18 19:54:59,369 INFO L131 PetriNetUnfolder]: For 809/928 co-relation queries the response was YES. [2022-11-18 19:54:59,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10204 conditions, 6759 events. 1786/6759 cut-off events. For 809/928 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 67075 event pairs, 707 based on Foata normal form. 14/5191 useless extension candidates. Maximal degree in co-relation 6695. Up to 1695 conditions per place. [2022-11-18 19:54:59,444 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 33 selfloop transitions, 4 changer transitions 0/289 dead transitions. [2022-11-18 19:54:59,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 289 transitions, 983 flow [2022-11-18 19:54:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:54:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:54:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1134 transitions. [2022-11-18 19:54:59,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8964426877470356 [2022-11-18 19:54:59,449 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1134 transitions. [2022-11-18 19:54:59,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1134 transitions. [2022-11-18 19:54:59,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:59,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1134 transitions. [2022-11-18 19:54:59,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 226.8) internal successors, (1134), 5 states have internal predecessors, (1134), 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 19:54:59,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 19:54:59,457 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 19:54:59,458 INFO L175 Difference]: Start difference. First operand has 236 places, 272 transitions, 865 flow. Second operand 5 states and 1134 transitions. [2022-11-18 19:54:59,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 289 transitions, 983 flow [2022-11-18 19:54:59,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 289 transitions, 981 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:54:59,467 INFO L231 Difference]: Finished difference. Result has 242 places, 274 transitions, 889 flow [2022-11-18 19:54:59,468 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=889, PETRI_PLACES=242, PETRI_TRANSITIONS=274} [2022-11-18 19:54:59,468 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 22 predicate places. [2022-11-18 19:54:59,469 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 274 transitions, 889 flow [2022-11-18 19:54:59,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:59,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:59,478 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:59,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:54:59,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:54:59,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1283058024, now seen corresponding path program 1 times [2022-11-18 19:54:59,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:59,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991783987] [2022-11-18 19:54:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:59,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:59,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991783987] [2022-11-18 19:54:59,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991783987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:59,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720594851] [2022-11-18 19:54:59,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:59,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:59,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:59,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:59,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:54:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:59,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:54:59,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:54:59,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:54:59,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720594851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:59,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:54:59,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 10 [2022-11-18 19:54:59,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729179043] [2022-11-18 19:54:59,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:59,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:59,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:59,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:59,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:54:59,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 253 [2022-11-18 19:54:59,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 274 transitions, 889 flow. Second operand has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 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 19:54:59,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:59,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 253 [2022-11-18 19:54:59,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:03,317 INFO L130 PetriNetUnfolder]: 5745/15666 cut-off events. [2022-11-18 19:55:03,317 INFO L131 PetriNetUnfolder]: For 5529/5529 co-relation queries the response was YES. [2022-11-18 19:55:03,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30824 conditions, 15666 events. 5745/15666 cut-off events. For 5529/5529 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 162474 event pairs, 4622 based on Foata normal form. 0/12567 useless extension candidates. Maximal degree in co-relation 17756. Up to 7446 conditions per place. [2022-11-18 19:55:03,581 INFO L137 encePairwiseOnDemand]: 234/253 looper letters, 164 selfloop transitions, 43 changer transitions 0/378 dead transitions. [2022-11-18 19:55:03,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 378 transitions, 1660 flow [2022-11-18 19:55:03,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:55:03,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:55:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2149 transitions. [2022-11-18 19:55:03,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7721882860222781 [2022-11-18 19:55:03,588 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2149 transitions. [2022-11-18 19:55:03,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2149 transitions. [2022-11-18 19:55:03,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:03,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2149 transitions. [2022-11-18 19:55:03,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.36363636363637) internal successors, (2149), 11 states have internal predecessors, (2149), 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 19:55:03,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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 19:55:03,603 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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 19:55:03,603 INFO L175 Difference]: Start difference. First operand has 242 places, 274 transitions, 889 flow. Second operand 11 states and 2149 transitions. [2022-11-18 19:55:03,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 378 transitions, 1660 flow [2022-11-18 19:55:03,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 378 transitions, 1652 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:55:03,672 INFO L231 Difference]: Finished difference. Result has 253 places, 291 transitions, 1071 flow [2022-11-18 19:55:03,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1071, PETRI_PLACES=253, PETRI_TRANSITIONS=291} [2022-11-18 19:55:03,676 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 33 predicate places. [2022-11-18 19:55:03,676 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 291 transitions, 1071 flow [2022-11-18 19:55:03,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 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 19:55:03,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:03,677 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:03,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:03,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:03,883 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:55:03,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:03,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1589026149, now seen corresponding path program 1 times [2022-11-18 19:55:03,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:03,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936239103] [2022-11-18 19:55:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:03,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:04,019 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 19:55:04,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:04,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936239103] [2022-11-18 19:55:04,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936239103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:04,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:04,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:55:04,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485551102] [2022-11-18 19:55:04,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:04,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:04,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:04,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:04,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:55:04,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 253 [2022-11-18 19:55:04,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 291 transitions, 1071 flow. Second operand has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 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 19:55:04,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:04,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 253 [2022-11-18 19:55:04,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:06,556 INFO L130 PetriNetUnfolder]: 4373/13215 cut-off events. [2022-11-18 19:55:06,556 INFO L131 PetriNetUnfolder]: For 3651/4079 co-relation queries the response was YES. [2022-11-18 19:55:06,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24588 conditions, 13215 events. 4373/13215 cut-off events. For 3651/4079 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 147780 event pairs, 2096 based on Foata normal form. 378/11321 useless extension candidates. Maximal degree in co-relation 15646. Up to 4084 conditions per place. [2022-11-18 19:55:06,689 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 40 selfloop transitions, 4 changer transitions 0/315 dead transitions. [2022-11-18 19:55:06,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 315 transitions, 1225 flow [2022-11-18 19:55:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:55:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:55:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1136 transitions. [2022-11-18 19:55:06,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8980237154150198 [2022-11-18 19:55:06,693 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1136 transitions. [2022-11-18 19:55:06,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1136 transitions. [2022-11-18 19:55:06,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:06,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1136 transitions. [2022-11-18 19:55:06,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 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 19:55:06,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 19:55:06,701 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 19:55:06,701 INFO L175 Difference]: Start difference. First operand has 253 places, 291 transitions, 1071 flow. Second operand 5 states and 1136 transitions. [2022-11-18 19:55:06,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 315 transitions, 1225 flow [2022-11-18 19:55:06,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 315 transitions, 1220 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:55:06,734 INFO L231 Difference]: Finished difference. Result has 258 places, 294 transitions, 1096 flow [2022-11-18 19:55:06,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1096, PETRI_PLACES=258, PETRI_TRANSITIONS=294} [2022-11-18 19:55:06,735 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 38 predicate places. [2022-11-18 19:55:06,735 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 294 transitions, 1096 flow [2022-11-18 19:55:06,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 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 19:55:06,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:06,736 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:06,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:55:06,737 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:55:06,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1257883517, now seen corresponding path program 1 times [2022-11-18 19:55:06,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:06,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873049957] [2022-11-18 19:55:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:06,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:06,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:06,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873049957] [2022-11-18 19:55:06,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873049957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:06,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114688594] [2022-11-18 19:55:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:06,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:06,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:06,904 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:06,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:55:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:07,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:55:07,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:55:07,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:55:07,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114688594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:07,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:55:07,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-18 19:55:07,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134391661] [2022-11-18 19:55:07,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:07,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:07,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:55:07,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 253 [2022-11-18 19:55:07,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 294 transitions, 1096 flow. Second operand has 7 states, 7 states have (on average 184.85714285714286) internal successors, (1294), 7 states have internal predecessors, (1294), 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 19:55:07,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:07,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 253 [2022-11-18 19:55:07,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:14,753 INFO L130 PetriNetUnfolder]: 13235/35794 cut-off events. [2022-11-18 19:55:14,753 INFO L131 PetriNetUnfolder]: For 12092/12894 co-relation queries the response was YES. [2022-11-18 19:55:14,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74567 conditions, 35794 events. 13235/35794 cut-off events. For 12092/12894 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 418593 event pairs, 12218 based on Foata normal form. 196/31696 useless extension candidates. Maximal degree in co-relation 46687. Up to 18948 conditions per place. [2022-11-18 19:55:15,076 INFO L137 encePairwiseOnDemand]: 234/253 looper letters, 158 selfloop transitions, 43 changer transitions 4/379 dead transitions. [2022-11-18 19:55:15,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 379 transitions, 1790 flow [2022-11-18 19:55:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:55:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:55:15,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2125 transitions. [2022-11-18 19:55:15,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7635644987423643 [2022-11-18 19:55:15,082 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2125 transitions. [2022-11-18 19:55:15,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2125 transitions. [2022-11-18 19:55:15,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:15,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2125 transitions. [2022-11-18 19:55:15,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.1818181818182) internal successors, (2125), 11 states have internal predecessors, (2125), 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 19:55:15,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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 19:55:15,095 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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 19:55:15,096 INFO L175 Difference]: Start difference. First operand has 258 places, 294 transitions, 1096 flow. Second operand 11 states and 2125 transitions. [2022-11-18 19:55:15,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 379 transitions, 1790 flow [2022-11-18 19:55:15,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 379 transitions, 1788 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:55:15,292 INFO L231 Difference]: Finished difference. Result has 269 places, 296 transitions, 1196 flow [2022-11-18 19:55:15,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1196, PETRI_PLACES=269, PETRI_TRANSITIONS=296} [2022-11-18 19:55:15,293 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 49 predicate places. [2022-11-18 19:55:15,293 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 296 transitions, 1196 flow [2022-11-18 19:55:15,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.85714285714286) internal successors, (1294), 7 states have internal predecessors, (1294), 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 19:55:15,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:15,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:15,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:15,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:55:15,500 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:55:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1435827169, now seen corresponding path program 1 times [2022-11-18 19:55:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:15,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767131703] [2022-11-18 19:55:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:15,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:15,649 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 19:55:15,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:15,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767131703] [2022-11-18 19:55:15,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767131703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:15,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551937650] [2022-11-18 19:55:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:15,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:15,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:15,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:15,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:55:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:15,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:55:15,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:55:15,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:55:15,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551937650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:15,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:55:15,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-18 19:55:15,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482380751] [2022-11-18 19:55:15,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:15,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:15,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:15,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:15,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:55:15,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 253 [2022-11-18 19:55:15,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 296 transitions, 1196 flow. Second operand has 7 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 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 19:55:15,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:15,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 253 [2022-11-18 19:55:15,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:21,149 INFO L130 PetriNetUnfolder]: 11068/25168 cut-off events. [2022-11-18 19:55:21,149 INFO L131 PetriNetUnfolder]: For 14693/14819 co-relation queries the response was YES. [2022-11-18 19:55:21,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54977 conditions, 25168 events. 11068/25168 cut-off events. For 14693/14819 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 266604 event pairs, 9712 based on Foata normal form. 126/22194 useless extension candidates. Maximal degree in co-relation 31287. Up to 15696 conditions per place. [2022-11-18 19:55:21,392 INFO L137 encePairwiseOnDemand]: 234/253 looper letters, 84 selfloop transitions, 24 changer transitions 92/373 dead transitions. [2022-11-18 19:55:21,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 373 transitions, 1854 flow [2022-11-18 19:55:21,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:55:21,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:55:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2127 transitions. [2022-11-18 19:55:21,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7642831476823572 [2022-11-18 19:55:21,398 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2127 transitions. [2022-11-18 19:55:21,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2127 transitions. [2022-11-18 19:55:21,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:21,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2127 transitions. [2022-11-18 19:55:21,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.36363636363637) internal successors, (2127), 11 states have internal predecessors, (2127), 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 19:55:21,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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 19:55:21,408 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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 19:55:21,408 INFO L175 Difference]: Start difference. First operand has 269 places, 296 transitions, 1196 flow. Second operand 11 states and 2127 transitions. [2022-11-18 19:55:21,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 373 transitions, 1854 flow [2022-11-18 19:55:21,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 373 transitions, 1814 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:55:21,530 INFO L231 Difference]: Finished difference. Result has 278 places, 275 transitions, 1047 flow [2022-11-18 19:55:21,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1047, PETRI_PLACES=278, PETRI_TRANSITIONS=275} [2022-11-18 19:55:21,531 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 58 predicate places. [2022-11-18 19:55:21,531 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 275 transitions, 1047 flow [2022-11-18 19:55:21,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 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 19:55:21,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:21,532 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:21,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:21,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:21,738 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:55:21,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:21,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1752564407, now seen corresponding path program 1 times [2022-11-18 19:55:21,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:21,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592899626] [2022-11-18 19:55:21,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:21,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:55:22,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:22,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592899626] [2022-11-18 19:55:22,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592899626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:22,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731455164] [2022-11-18 19:55:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:22,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:22,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:22,121 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:22,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:55:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:55:22,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:55:22,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:55:22,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731455164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:22,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:55:22,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 19:55:22,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590160237] [2022-11-18 19:55:22,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:22,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:22,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:22,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:22,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:22,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-18 19:55:22,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 275 transitions, 1047 flow. Second operand has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 19:55:22,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:22,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-18 19:55:22,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:23,812 INFO L130 PetriNetUnfolder]: 1855/6810 cut-off events. [2022-11-18 19:55:23,812 INFO L131 PetriNetUnfolder]: For 2343/2421 co-relation queries the response was YES. [2022-11-18 19:55:23,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12963 conditions, 6810 events. 1855/6810 cut-off events. For 2343/2421 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 70094 event pairs, 648 based on Foata normal form. 66/6150 useless extension candidates. Maximal degree in co-relation 12450. Up to 1422 conditions per place. [2022-11-18 19:55:23,871 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 21 selfloop transitions, 5 changer transitions 0/279 dead transitions. [2022-11-18 19:55:23,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 279 transitions, 1109 flow [2022-11-18 19:55:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:55:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:55:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 901 transitions. [2022-11-18 19:55:23,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8903162055335968 [2022-11-18 19:55:23,875 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 901 transitions. [2022-11-18 19:55:23,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 901 transitions. [2022-11-18 19:55:23,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:23,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 901 transitions. [2022-11-18 19:55:23,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 225.25) internal successors, (901), 4 states have internal predecessors, (901), 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 19:55:23,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 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 19:55:23,879 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 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 19:55:23,879 INFO L175 Difference]: Start difference. First operand has 278 places, 275 transitions, 1047 flow. Second operand 4 states and 901 transitions. [2022-11-18 19:55:23,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 279 transitions, 1109 flow [2022-11-18 19:55:23,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 279 transitions, 932 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-18 19:55:23,903 INFO L231 Difference]: Finished difference. Result has 247 places, 273 transitions, 872 flow [2022-11-18 19:55:23,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=872, PETRI_PLACES=247, PETRI_TRANSITIONS=273} [2022-11-18 19:55:23,904 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 27 predicate places. [2022-11-18 19:55:23,905 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 273 transitions, 872 flow [2022-11-18 19:55:23,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 19:55:23,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:23,905 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:23,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:24,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:24,111 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:55:24,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1752564408, now seen corresponding path program 1 times [2022-11-18 19:55:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:24,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113458292] [2022-11-18 19:55:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:24,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:55:24,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:24,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113458292] [2022-11-18 19:55:24,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113458292] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:24,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718442055] [2022-11-18 19:55:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:24,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:24,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:24,257 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:24,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:55:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:24,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:55:24,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:55:24,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:55:24,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718442055] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:24,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:24,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-18 19:55:24,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119398481] [2022-11-18 19:55:24,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:24,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:55:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:55:24,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:55:24,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-18 19:55:24,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 273 transitions, 872 flow. Second operand has 10 states, 10 states have (on average 221.9) internal successors, (2219), 10 states have internal predecessors, (2219), 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 19:55:24,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:24,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-18 19:55:24,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:25,893 INFO L130 PetriNetUnfolder]: 2503/6300 cut-off events. [2022-11-18 19:55:25,893 INFO L131 PetriNetUnfolder]: For 2166/2250 co-relation queries the response was YES. [2022-11-18 19:55:25,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12813 conditions, 6300 events. 2503/6300 cut-off events. For 2166/2250 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 62586 event pairs, 438 based on Foata normal form. 192/5508 useless extension candidates. Maximal degree in co-relation 8633. Up to 1224 conditions per place. [2022-11-18 19:55:25,952 INFO L137 encePairwiseOnDemand]: 246/253 looper letters, 51 selfloop transitions, 9 changer transitions 0/313 dead transitions. [2022-11-18 19:55:25,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 313 transitions, 1106 flow [2022-11-18 19:55:25,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:55:25,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:55:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2034 transitions. [2022-11-18 19:55:25,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8932806324110671 [2022-11-18 19:55:25,956 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2034 transitions. [2022-11-18 19:55:25,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2034 transitions. [2022-11-18 19:55:25,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:25,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2034 transitions. [2022-11-18 19:55:25,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 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 19:55:25,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 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 19:55:25,966 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 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 19:55:25,966 INFO L175 Difference]: Start difference. First operand has 247 places, 273 transitions, 872 flow. Second operand 9 states and 2034 transitions. [2022-11-18 19:55:25,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 313 transitions, 1106 flow [2022-11-18 19:55:25,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 313 transitions, 1092 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:55:25,980 INFO L231 Difference]: Finished difference. Result has 257 places, 277 transitions, 918 flow [2022-11-18 19:55:25,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=918, PETRI_PLACES=257, PETRI_TRANSITIONS=277} [2022-11-18 19:55:25,981 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 37 predicate places. [2022-11-18 19:55:25,981 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 277 transitions, 918 flow [2022-11-18 19:55:25,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 221.9) internal successors, (2219), 10 states have internal predecessors, (2219), 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 19:55:25,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:25,983 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:25,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 19:55:26,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:55:26,188 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:55:26,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:26,189 INFO L85 PathProgramCache]: Analyzing trace with hash 406972973, now seen corresponding path program 1 times [2022-11-18 19:55:26,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:26,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673780903] [2022-11-18 19:55:26,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:26,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:55:26,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:26,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673780903] [2022-11-18 19:55:26,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673780903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:26,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6374843] [2022-11-18 19:55:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:26,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:26,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:26,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:26,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99df32-54ad-4a64-8c2d-5c5a50dfd497/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:55:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:26,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:55:26,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:55:26,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:27,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:55:27,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6374843] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:27,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:27,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-18 19:55:27,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103062241] [2022-11-18 19:55:27,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:27,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:55:27,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:55:27,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:55:27,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 253 [2022-11-18 19:55:27,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 277 transitions, 918 flow. Second operand has 23 states, 23 states have (on average 166.3913043478261) internal successors, (3827), 23 states have internal predecessors, (3827), 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 19:55:27,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:27,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 253 [2022-11-18 19:55:27,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand