./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:14:20,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:14:20,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:14:20,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:14:20,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:14:20,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:14:20,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:14:20,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:14:20,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:14:20,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:14:20,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:14:20,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:14:20,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:14:20,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:14:20,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:14:20,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:14:20,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:14:20,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:14:20,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:14:20,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:14:20,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:14:20,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:14:20,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:14:20,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:14:20,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:14:20,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:14:20,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:14:20,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:14:20,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:14:20,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:14:20,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:14:20,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:14:20,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:14:20,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:14:20,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:14:20,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:14:20,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:14:20,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:14:20,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:14:20,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:14:20,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:14:20,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:14:21,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:14:21,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:14:21,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:14:21,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:14:21,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:14:21,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:14:21,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:14:21,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:14:21,017 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:14:21,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:14:21,018 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:14:21,018 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:14:21,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:14:21,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:14:21,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:14:21,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:14:21,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:14:21,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:14:21,020 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:14:21,020 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:14:21,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:14:21,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:14:21,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:14:21,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:14:21,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:14:21,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:14:21,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:14:21,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:14:21,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:14:21,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:14:21,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:14:21,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:14:21,025 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:14:21,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:14:21,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:14:21,026 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_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c [2022-11-21 16:14:21,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:14:21,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:14:21,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:14:21,432 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:14:21,432 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:14:21,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2022-11-21 16:14:24,618 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:14:24,911 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:14:24,912 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2022-11-21 16:14:24,930 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/data/5d594f406/20dd37f2f19144689ea77ae7260759dd/FLAGe4db0ce0e [2022-11-21 16:14:24,946 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/data/5d594f406/20dd37f2f19144689ea77ae7260759dd [2022-11-21 16:14:24,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:14:24,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:14:24,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:14:24,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:14:24,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:14:24,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:14:24" (1/1) ... [2022-11-21 16:14:24,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42210ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:24, skipping insertion in model container [2022-11-21 16:14:24,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:14:24" (1/1) ... [2022-11-21 16:14:24,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:14:25,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:14:25,397 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2022-11-21 16:14:25,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:14:25,444 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:14:25,498 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2022-11-21 16:14:25,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:14:25,543 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:14:25,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25 WrapperNode [2022-11-21 16:14:25,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:14:25,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:14:25,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:14:25,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:14:25,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (1/1) ... [2022-11-21 16:14:25,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (1/1) ... [2022-11-21 16:14:25,589 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2022-11-21 16:14:25,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:14:25,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:14:25,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:14:25,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:14:25,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (1/1) ... [2022-11-21 16:14:25,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (1/1) ... [2022-11-21 16:14:25,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (1/1) ... [2022-11-21 16:14:25,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (1/1) ... [2022-11-21 16:14:25,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (1/1) ... [2022-11-21 16:14:25,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (1/1) ... [2022-11-21 16:14:25,620 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (1/1) ... [2022-11-21 16:14:25,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (1/1) ... [2022-11-21 16:14:25,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:14:25,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:14:25,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:14:25,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:14:25,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (1/1) ... [2022-11-21 16:14:25,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:14:25,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:14:25,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:14:25,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:14:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:14:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:14:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 16:14:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:14:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:14:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-21 16:14:25,742 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-21 16:14:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:14:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:14:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:14:25,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:14:25,745 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:14:26,011 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:14:26,013 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:14:26,347 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:14:26,355 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:14:26,356 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-21 16:14:26,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:14:26 BoogieIcfgContainer [2022-11-21 16:14:26,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:14:26,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:14:26,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:14:26,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:14:26,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:14:24" (1/3) ... [2022-11-21 16:14:26,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7b1295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:14:26, skipping insertion in model container [2022-11-21 16:14:26,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:14:25" (2/3) ... [2022-11-21 16:14:26,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7b1295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:14:26, skipping insertion in model container [2022-11-21 16:14:26,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:14:26" (3/3) ... [2022-11-21 16:14:26,371 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2022-11-21 16:14:26,383 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:14:26,397 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:14:26,397 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-21 16:14:26,398 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:14:26,467 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 16:14:26,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 114 transitions, 233 flow [2022-11-21 16:14:26,627 INFO L130 PetriNetUnfolder]: 14/144 cut-off events. [2022-11-21 16:14:26,628 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:14:26,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 14/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 337 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2022-11-21 16:14:26,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 114 transitions, 233 flow [2022-11-21 16:14:26,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 114 transitions, 233 flow [2022-11-21 16:14:26,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:14:26,664 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;@34cc33c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:14:26,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-21 16:14:26,688 INFO L130 PetriNetUnfolder]: 1/60 cut-off events. [2022-11-21 16:14:26,688 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:14:26,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:26,690 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] [2022-11-21 16:14:26,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-21 16:14:26,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:26,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1919047163, now seen corresponding path program 1 times [2022-11-21 16:14:26,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:26,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464362682] [2022-11-21 16:14:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:26,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:14:27,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:27,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464362682] [2022-11-21 16:14:27,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464362682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:27,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:14:27,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:14:27,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840760699] [2022-11-21 16:14:27,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:27,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:14:27,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:27,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:14:27,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:14:27,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-11-21 16:14:27,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:27,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:14:27,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-11-21 16:14:27,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:14:27,501 INFO L130 PetriNetUnfolder]: 0/105 cut-off events. [2022-11-21 16:14:27,501 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:14:27,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 105 events. 0/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 36/135 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2022-11-21 16:14:27,503 INFO L137 encePairwiseOnDemand]: 97/114 looper letters, 9 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2022-11-21 16:14:27,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 237 flow [2022-11-21 16:14:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:14:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:14:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 495 transitions. [2022-11-21 16:14:27,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.868421052631579 [2022-11-21 16:14:27,531 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 495 transitions. [2022-11-21 16:14:27,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 495 transitions. [2022-11-21 16:14:27,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:14:27,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 495 transitions. [2022-11-21 16:14:27,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:27,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:27,556 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:27,559 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 233 flow. Second operand 5 states and 495 transitions. [2022-11-21 16:14:27,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 237 flow [2022-11-21 16:14:27,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 237 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:14:27,569 INFO L231 Difference]: Finished difference. Result has 109 places, 101 transitions, 219 flow [2022-11-21 16:14:27,571 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=109, PETRI_TRANSITIONS=101} [2022-11-21 16:14:27,576 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 2 predicate places. [2022-11-21 16:14:27,576 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 101 transitions, 219 flow [2022-11-21 16:14:27,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:27,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:27,578 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] [2022-11-21 16:14:27,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:14:27,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-21 16:14:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1121799402, now seen corresponding path program 1 times [2022-11-21 16:14:27,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:27,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519330101] [2022-11-21 16:14:27,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:27,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:14:28,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:28,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519330101] [2022-11-21 16:14:28,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519330101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:28,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:14:28,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:14:28,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459223002] [2022-11-21 16:14:28,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:28,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:14:28,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:28,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:14:28,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:14:28,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 114 [2022-11-21 16:14:28,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 101 transitions, 219 flow. Second operand has 12 states, 12 states have (on average 58.5) internal successors, (702), 12 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:28,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:14:28,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 114 [2022-11-21 16:14:28,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:14:29,119 INFO L130 PetriNetUnfolder]: 97/501 cut-off events. [2022-11-21 16:14:29,120 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 16:14:29,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 501 events. 97/501 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2755 event pairs, 12 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 691. Up to 85 conditions per place. [2022-11-21 16:14:29,125 INFO L137 encePairwiseOnDemand]: 99/114 looper letters, 72 selfloop transitions, 22 changer transitions 2/150 dead transitions. [2022-11-21 16:14:29,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 150 transitions, 509 flow [2022-11-21 16:14:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:14:29,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:14:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 996 transitions. [2022-11-21 16:14:29,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5460526315789473 [2022-11-21 16:14:29,130 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 996 transitions. [2022-11-21 16:14:29,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 996 transitions. [2022-11-21 16:14:29,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:14:29,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 996 transitions. [2022-11-21 16:14:29,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 62.25) internal successors, (996), 16 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:29,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 114.0) internal successors, (1938), 17 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:29,141 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 114.0) internal successors, (1938), 17 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:29,142 INFO L175 Difference]: Start difference. First operand has 109 places, 101 transitions, 219 flow. Second operand 16 states and 996 transitions. [2022-11-21 16:14:29,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 150 transitions, 509 flow [2022-11-21 16:14:29,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 150 transitions, 501 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:14:29,147 INFO L231 Difference]: Finished difference. Result has 124 places, 110 transitions, 305 flow [2022-11-21 16:14:29,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=305, PETRI_PLACES=124, PETRI_TRANSITIONS=110} [2022-11-21 16:14:29,148 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 17 predicate places. [2022-11-21 16:14:29,149 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 110 transitions, 305 flow [2022-11-21 16:14:29,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 58.5) internal successors, (702), 12 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:29,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:29,150 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] [2022-11-21 16:14:29,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:14:29,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-21 16:14:29,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:29,152 INFO L85 PathProgramCache]: Analyzing trace with hash 183600179, now seen corresponding path program 1 times [2022-11-21 16:14:29,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:29,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420285004] [2022-11-21 16:14:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:29,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:14:29,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:14:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:14:29,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:14:29,213 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:14:29,214 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-21 16:14:29,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-21 16:14:29,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-21 16:14:29,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-21 16:14:29,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-21 16:14:29,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-21 16:14:29,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-21 16:14:29,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-21 16:14:29,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-21 16:14:29,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-21 16:14:29,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-21 16:14:29,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:14:29,221 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-21 16:14:29,225 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:14:29,225 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 16:14:29,251 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 16:14:29,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 155 transitions, 322 flow [2022-11-21 16:14:29,290 INFO L130 PetriNetUnfolder]: 24/224 cut-off events. [2022-11-21 16:14:29,291 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:14:29,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 224 events. 24/224 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 650 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 145. Up to 6 conditions per place. [2022-11-21 16:14:29,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 155 transitions, 322 flow [2022-11-21 16:14:29,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 155 transitions, 322 flow [2022-11-21 16:14:29,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:14:29,300 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;@34cc33c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:14:29,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-21 16:14:29,308 INFO L130 PetriNetUnfolder]: 1/60 cut-off events. [2022-11-21 16:14:29,308 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:14:29,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:29,309 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] [2022-11-21 16:14:29,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 16:14:29,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:29,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1526250765, now seen corresponding path program 1 times [2022-11-21 16:14:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:29,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262578234] [2022-11-21 16:14:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:29,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:14:29,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:29,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262578234] [2022-11-21 16:14:29,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262578234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:29,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:14:29,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:14:29,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212678418] [2022-11-21 16:14:29,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:29,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:14:29,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:29,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:14:29,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:14:29,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 155 [2022-11-21 16:14:29,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 155 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:29,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:14:29,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 155 [2022-11-21 16:14:29,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:14:29,458 INFO L130 PetriNetUnfolder]: 0/174 cut-off events. [2022-11-21 16:14:29,459 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:14:29,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 174 events. 0/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 360 event pairs, 0 based on Foata normal form. 102/262 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2022-11-21 16:14:29,460 INFO L137 encePairwiseOnDemand]: 132/155 looper letters, 17 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2022-11-21 16:14:29,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 145 transitions, 344 flow [2022-11-21 16:14:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:14:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:14:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 679 transitions. [2022-11-21 16:14:29,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761290322580645 [2022-11-21 16:14:29,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 679 transitions. [2022-11-21 16:14:29,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 679 transitions. [2022-11-21 16:14:29,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:14:29,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 679 transitions. [2022-11-21 16:14:29,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:29,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:29,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:29,471 INFO L175 Difference]: Start difference. First operand has 144 places, 155 transitions, 322 flow. Second operand 5 states and 679 transitions. [2022-11-21 16:14:29,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 145 transitions, 344 flow [2022-11-21 16:14:29,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 145 transitions, 342 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-21 16:14:29,476 INFO L231 Difference]: Finished difference. Result has 150 places, 141 transitions, 318 flow [2022-11-21 16:14:29,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=150, PETRI_TRANSITIONS=141} [2022-11-21 16:14:29,478 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 6 predicate places. [2022-11-21 16:14:29,478 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 141 transitions, 318 flow [2022-11-21 16:14:29,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:29,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:29,479 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] [2022-11-21 16:14:29,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:14:29,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 16:14:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1825354007, now seen corresponding path program 1 times [2022-11-21 16:14:29,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:29,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957846826] [2022-11-21 16:14:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:29,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:14:29,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:29,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957846826] [2022-11-21 16:14:29,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957846826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:29,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:14:29,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:14:29,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958508178] [2022-11-21 16:14:29,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:29,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:14:29,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:29,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:14:29,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:14:29,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 155 [2022-11-21 16:14:29,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 141 transitions, 318 flow. Second operand has 12 states, 12 states have (on average 84.5) internal successors, (1014), 12 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:29,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:14:29,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 155 [2022-11-21 16:14:29,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:14:32,544 INFO L130 PetriNetUnfolder]: 2879/7792 cut-off events. [2022-11-21 16:14:32,545 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-21 16:14:32,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12602 conditions, 7792 events. 2879/7792 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 77504 event pairs, 655 based on Foata normal form. 0/7282 useless extension candidates. Maximal degree in co-relation 12514. Up to 2487 conditions per place. [2022-11-21 16:14:32,631 INFO L137 encePairwiseOnDemand]: 139/155 looper letters, 183 selfloop transitions, 31 changer transitions 0/299 dead transitions. [2022-11-21 16:14:32,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 299 transitions, 1087 flow [2022-11-21 16:14:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:14:32,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:14:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1698 transitions. [2022-11-21 16:14:32,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6086021505376344 [2022-11-21 16:14:32,639 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1698 transitions. [2022-11-21 16:14:32,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1698 transitions. [2022-11-21 16:14:32,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:14:32,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1698 transitions. [2022-11-21 16:14:32,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.33333333333333) internal successors, (1698), 18 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:32,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 155.0) internal successors, (2945), 19 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:32,660 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 155.0) internal successors, (2945), 19 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:32,661 INFO L175 Difference]: Start difference. First operand has 150 places, 141 transitions, 318 flow. Second operand 18 states and 1698 transitions. [2022-11-21 16:14:32,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 299 transitions, 1087 flow [2022-11-21 16:14:32,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 299 transitions, 1085 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:14:32,673 INFO L231 Difference]: Finished difference. Result has 176 places, 169 transitions, 535 flow [2022-11-21 16:14:32,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=535, PETRI_PLACES=176, PETRI_TRANSITIONS=169} [2022-11-21 16:14:32,676 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 32 predicate places. [2022-11-21 16:14:32,676 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 169 transitions, 535 flow [2022-11-21 16:14:32,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 84.5) internal successors, (1014), 12 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:32,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:32,677 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:14:32,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:14:32,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 16:14:32,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:32,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1182680440, now seen corresponding path program 1 times [2022-11-21 16:14:32,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:32,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009454706] [2022-11-21 16:14:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:32,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:14:32,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:32,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009454706] [2022-11-21 16:14:32,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009454706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:32,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:14:32,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:14:32,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597858821] [2022-11-21 16:14:32,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:32,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:14:32,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:32,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:14:32,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:14:32,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 155 [2022-11-21 16:14:32,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 169 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:32,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:14:32,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 155 [2022-11-21 16:14:32,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:14:33,019 INFO L130 PetriNetUnfolder]: 39/645 cut-off events. [2022-11-21 16:14:33,019 INFO L131 PetriNetUnfolder]: For 240/260 co-relation queries the response was YES. [2022-11-21 16:14:33,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1004 conditions, 645 events. 39/645 cut-off events. For 240/260 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3715 event pairs, 12 based on Foata normal form. 1/598 useless extension candidates. Maximal degree in co-relation 875. Up to 57 conditions per place. [2022-11-21 16:14:33,029 INFO L137 encePairwiseOnDemand]: 149/155 looper letters, 9 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2022-11-21 16:14:33,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 169 transitions, 567 flow [2022-11-21 16:14:33,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:14:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:14:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 635 transitions. [2022-11-21 16:14:33,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8193548387096774 [2022-11-21 16:14:33,033 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 635 transitions. [2022-11-21 16:14:33,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 635 transitions. [2022-11-21 16:14:33,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:14:33,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 635 transitions. [2022-11-21 16:14:33,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:33,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:33,039 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:33,040 INFO L175 Difference]: Start difference. First operand has 176 places, 169 transitions, 535 flow. Second operand 5 states and 635 transitions. [2022-11-21 16:14:33,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 169 transitions, 567 flow [2022-11-21 16:14:33,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 169 transitions, 562 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:14:33,049 INFO L231 Difference]: Finished difference. Result has 177 places, 169 transitions, 550 flow [2022-11-21 16:14:33,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=550, PETRI_PLACES=177, PETRI_TRANSITIONS=169} [2022-11-21 16:14:33,051 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 33 predicate places. [2022-11-21 16:14:33,051 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 169 transitions, 550 flow [2022-11-21 16:14:33,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:33,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:33,052 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] [2022-11-21 16:14:33,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:14:33,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 16:14:33,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:33,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1991612427, now seen corresponding path program 1 times [2022-11-21 16:14:33,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:33,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048028601] [2022-11-21 16:14:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:33,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:14:33,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:33,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048028601] [2022-11-21 16:14:33,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048028601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:14:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466766907] [2022-11-21 16:14:33,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:33,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:14:33,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:14:33,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:14:33,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:14:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:33,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:14:33,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:14:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:14:33,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:14:33,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466766907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:33,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:14:33,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:14:33,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859778946] [2022-11-21 16:14:33,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:33,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:14:33,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:33,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:14:33,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:14:33,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 155 [2022-11-21 16:14:33,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 169 transitions, 550 flow. Second operand has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:33,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:14:33,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 155 [2022-11-21 16:14:33,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:14:33,671 INFO L130 PetriNetUnfolder]: 39/644 cut-off events. [2022-11-21 16:14:33,671 INFO L131 PetriNetUnfolder]: For 251/271 co-relation queries the response was YES. [2022-11-21 16:14:33,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 644 events. 39/644 cut-off events. For 251/271 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3705 event pairs, 12 based on Foata normal form. 1/597 useless extension candidates. Maximal degree in co-relation 883. Up to 57 conditions per place. [2022-11-21 16:14:33,680 INFO L137 encePairwiseOnDemand]: 150/155 looper letters, 13 selfloop transitions, 6 changer transitions 0/171 dead transitions. [2022-11-21 16:14:33,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 171 transitions, 590 flow [2022-11-21 16:14:33,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:14:33,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:14:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 888 transitions. [2022-11-21 16:14:33,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8184331797235023 [2022-11-21 16:14:33,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 888 transitions. [2022-11-21 16:14:33,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 888 transitions. [2022-11-21 16:14:33,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:14:33,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 888 transitions. [2022-11-21 16:14:33,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.85714285714286) internal successors, (888), 7 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) [2022-11-21 16:14:33,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 155.0) internal successors, (1240), 8 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:33,693 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 155.0) internal successors, (1240), 8 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:33,694 INFO L175 Difference]: Start difference. First operand has 177 places, 169 transitions, 550 flow. Second operand 7 states and 888 transitions. [2022-11-21 16:14:33,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 171 transitions, 590 flow [2022-11-21 16:14:33,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 171 transitions, 578 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:14:33,702 INFO L231 Difference]: Finished difference. Result has 179 places, 168 transitions, 546 flow [2022-11-21 16:14:33,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-11-21 16:14:33,705 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 35 predicate places. [2022-11-21 16:14:33,705 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 546 flow [2022-11-21 16:14:33,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:33,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:33,706 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] [2022-11-21 16:14:33,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:14:33,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 16:14:33,918 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 16:14:33,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:33,918 INFO L85 PathProgramCache]: Analyzing trace with hash 424365194, now seen corresponding path program 1 times [2022-11-21 16:14:33,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:33,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810964664] [2022-11-21 16:14:33,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:33,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:14:34,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810964664] [2022-11-21 16:14:34,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810964664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:34,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:14:34,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:14:34,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879967051] [2022-11-21 16:14:34,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:34,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:14:34,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:14:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:14:34,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 155 [2022-11-21 16:14:34,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 102.16666666666667) internal successors, (613), 6 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:34,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:14:34,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 155 [2022-11-21 16:14:34,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:14:35,580 INFO L130 PetriNetUnfolder]: 1487/5404 cut-off events. [2022-11-21 16:14:35,581 INFO L131 PetriNetUnfolder]: For 4974/5262 co-relation queries the response was YES. [2022-11-21 16:14:35,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10442 conditions, 5404 events. 1487/5404 cut-off events. For 4974/5262 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 55572 event pairs, 479 based on Foata normal form. 58/4898 useless extension candidates. Maximal degree in co-relation 9802. Up to 1032 conditions per place. [2022-11-21 16:14:35,662 INFO L137 encePairwiseOnDemand]: 142/155 looper letters, 115 selfloop transitions, 34 changer transitions 0/260 dead transitions. [2022-11-21 16:14:35,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 260 transitions, 1199 flow [2022-11-21 16:14:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:14:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:14:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1208 transitions. [2022-11-21 16:14:35,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7085043988269795 [2022-11-21 16:14:35,667 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1208 transitions. [2022-11-21 16:14:35,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1208 transitions. [2022-11-21 16:14:35,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:14:35,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1208 transitions. [2022-11-21 16:14:35,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 109.81818181818181) internal successors, (1208), 11 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:35,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:35,678 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:35,678 INFO L175 Difference]: Start difference. First operand has 179 places, 168 transitions, 546 flow. Second operand 11 states and 1208 transitions. [2022-11-21 16:14:35,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 260 transitions, 1199 flow [2022-11-21 16:14:35,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 260 transitions, 1188 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 16:14:35,710 INFO L231 Difference]: Finished difference. Result has 191 places, 195 transitions, 821 flow [2022-11-21 16:14:35,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=821, PETRI_PLACES=191, PETRI_TRANSITIONS=195} [2022-11-21 16:14:35,712 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 47 predicate places. [2022-11-21 16:14:35,712 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 195 transitions, 821 flow [2022-11-21 16:14:35,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.16666666666667) internal successors, (613), 6 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:35,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:35,713 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] [2022-11-21 16:14:35,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:14:35,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 16:14:35,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2046397834, now seen corresponding path program 1 times [2022-11-21 16:14:35,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:35,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104453704] [2022-11-21 16:14:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:14:36,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:36,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104453704] [2022-11-21 16:14:36,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104453704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:14:36,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973756264] [2022-11-21 16:14:36,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:36,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:14:36,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:14:36,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:14:36,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:14:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:36,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 16:14:36,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:14:36,777 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:14:36,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:14:36,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:14:37,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:14:37,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:14:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:14:37,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:14:37,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-21 16:14:37,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 16:14:37,780 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 16:14:37,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-21 16:14:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:14:37,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973756264] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:14:37,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:14:37,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2022-11-21 16:14:37,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401856775] [2022-11-21 16:14:37,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:14:37,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-21 16:14:37,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-21 16:14:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=651, Unknown=3, NotChecked=0, Total=756 [2022-11-21 16:14:37,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 155 [2022-11-21 16:14:37,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 195 transitions, 821 flow. Second operand has 28 states, 28 states have (on average 84.82142857142857) internal successors, (2375), 28 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:37,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:14:37,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 155 [2022-11-21 16:14:37,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:14:46,667 INFO L130 PetriNetUnfolder]: 6266/17315 cut-off events. [2022-11-21 16:14:46,668 INFO L131 PetriNetUnfolder]: For 29478/30148 co-relation queries the response was YES. [2022-11-21 16:14:46,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41648 conditions, 17315 events. 6266/17315 cut-off events. For 29478/30148 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 197066 event pairs, 924 based on Foata normal form. 185/16527 useless extension candidates. Maximal degree in co-relation 40329. Up to 3257 conditions per place. [2022-11-21 16:14:46,879 INFO L137 encePairwiseOnDemand]: 135/155 looper letters, 362 selfloop transitions, 156 changer transitions 0/621 dead transitions. [2022-11-21 16:14:46,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 621 transitions, 3930 flow [2022-11-21 16:14:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 16:14:46,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-21 16:14:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4089 transitions. [2022-11-21 16:14:46,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5862365591397849 [2022-11-21 16:14:46,894 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4089 transitions. [2022-11-21 16:14:46,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4089 transitions. [2022-11-21 16:14:46,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:14:46,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4089 transitions. [2022-11-21 16:14:46,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 90.86666666666666) internal successors, (4089), 45 states have internal predecessors, (4089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:46,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 155.0) internal successors, (7130), 46 states have internal predecessors, (7130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:46,931 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 155.0) internal successors, (7130), 46 states have internal predecessors, (7130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:46,931 INFO L175 Difference]: Start difference. First operand has 191 places, 195 transitions, 821 flow. Second operand 45 states and 4089 transitions. [2022-11-21 16:14:46,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 621 transitions, 3930 flow [2022-11-21 16:14:47,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 621 transitions, 3810 flow, removed 60 selfloop flow, removed 0 redundant places. [2022-11-21 16:14:47,475 INFO L231 Difference]: Finished difference. Result has 255 places, 333 transitions, 2209 flow [2022-11-21 16:14:47,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2209, PETRI_PLACES=255, PETRI_TRANSITIONS=333} [2022-11-21 16:14:47,477 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 111 predicate places. [2022-11-21 16:14:47,478 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 333 transitions, 2209 flow [2022-11-21 16:14:47,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 84.82142857142857) internal successors, (2375), 28 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:47,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:47,479 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] [2022-11-21 16:14:47,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:14:47,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:14:47,686 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 16:14:47,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:47,692 INFO L85 PathProgramCache]: Analyzing trace with hash 270419610, now seen corresponding path program 1 times [2022-11-21 16:14:47,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:47,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113541006] [2022-11-21 16:14:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:47,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:14:48,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:48,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113541006] [2022-11-21 16:14:48,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113541006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:48,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:14:48,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-21 16:14:48,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002267903] [2022-11-21 16:14:48,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:48,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 16:14:48,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:48,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 16:14:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:14:48,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 155 [2022-11-21 16:14:48,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 333 transitions, 2209 flow. Second operand has 15 states, 15 states have (on average 77.66666666666667) internal successors, (1165), 15 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:48,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:14:48,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 155 [2022-11-21 16:14:48,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:14:55,834 INFO L130 PetriNetUnfolder]: 10010/25177 cut-off events. [2022-11-21 16:14:55,834 INFO L131 PetriNetUnfolder]: For 124979/125664 co-relation queries the response was YES. [2022-11-21 16:14:56,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81991 conditions, 25177 events. 10010/25177 cut-off events. For 124979/125664 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 288132 event pairs, 1521 based on Foata normal form. 466/24921 useless extension candidates. Maximal degree in co-relation 81616. Up to 6655 conditions per place. [2022-11-21 16:14:56,247 INFO L137 encePairwiseOnDemand]: 132/155 looper letters, 518 selfloop transitions, 207 changer transitions 19/850 dead transitions. [2022-11-21 16:14:56,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 850 transitions, 7582 flow [2022-11-21 16:14:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:14:56,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:14:56,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3012 transitions. [2022-11-21 16:14:56,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5715370018975332 [2022-11-21 16:14:56,257 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3012 transitions. [2022-11-21 16:14:56,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3012 transitions. [2022-11-21 16:14:56,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:14:56,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3012 transitions. [2022-11-21 16:14:56,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 88.58823529411765) internal successors, (3012), 34 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:56,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 155.0) internal successors, (5425), 35 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:56,297 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 155.0) internal successors, (5425), 35 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:56,298 INFO L175 Difference]: Start difference. First operand has 255 places, 333 transitions, 2209 flow. Second operand 34 states and 3012 transitions. [2022-11-21 16:14:56,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 850 transitions, 7582 flow [2022-11-21 16:14:57,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 850 transitions, 7308 flow, removed 135 selfloop flow, removed 2 redundant places. [2022-11-21 16:14:57,949 INFO L231 Difference]: Finished difference. Result has 300 places, 455 transitions, 3921 flow [2022-11-21 16:14:57,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3921, PETRI_PLACES=300, PETRI_TRANSITIONS=455} [2022-11-21 16:14:57,951 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 156 predicate places. [2022-11-21 16:14:57,951 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 455 transitions, 3921 flow [2022-11-21 16:14:57,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 77.66666666666667) internal successors, (1165), 15 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:57,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:57,952 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-21 16:14:57,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:14:57,952 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-21 16:14:57,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:57,953 INFO L85 PathProgramCache]: Analyzing trace with hash 920035166, now seen corresponding path program 1 times [2022-11-21 16:14:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:57,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053841163] [2022-11-21 16:14:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:57,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:14:57,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:14:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:14:57,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:14:57,990 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:14:57,990 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-21 16:14:57,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2022-11-21 16:14:57,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2022-11-21 16:14:57,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2022-11-21 16:14:57,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2022-11-21 16:14:57,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2022-11-21 16:14:57,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2022-11-21 16:14:57,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2022-11-21 16:14:57,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2022-11-21 16:14:57,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2022-11-21 16:14:57,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2022-11-21 16:14:57,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2022-11-21 16:14:57,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2022-11-21 16:14:57,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2022-11-21 16:14:57,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2022-11-21 16:14:57,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:14:57,994 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:14:57,995 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:14:57,995 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 16:14:58,018 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 16:14:58,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 196 transitions, 413 flow [2022-11-21 16:14:58,060 INFO L130 PetriNetUnfolder]: 34/304 cut-off events. [2022-11-21 16:14:58,060 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-21 16:14:58,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 304 events. 34/304 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 964 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 228. Up to 8 conditions per place. [2022-11-21 16:14:58,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 196 transitions, 413 flow [2022-11-21 16:14:58,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 196 transitions, 413 flow [2022-11-21 16:14:58,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:14:58,068 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;@34cc33c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:14:58,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-21 16:14:58,073 INFO L130 PetriNetUnfolder]: 1/60 cut-off events. [2022-11-21 16:14:58,073 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:14:58,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:58,073 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] [2022-11-21 16:14:58,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:14:58,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:58,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1495018421, now seen corresponding path program 1 times [2022-11-21 16:14:58,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:58,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032575578] [2022-11-21 16:14:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:58,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:14:58,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:58,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032575578] [2022-11-21 16:14:58,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032575578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:58,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:14:58,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:14:58,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298517459] [2022-11-21 16:14:58,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:58,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:14:58,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:58,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:14:58,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:14:58,175 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 196 [2022-11-21 16:14:58,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 196 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:58,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:14:58,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 196 [2022-11-21 16:14:58,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:14:58,260 INFO L130 PetriNetUnfolder]: 0/243 cut-off events. [2022-11-21 16:14:58,260 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-21 16:14:58,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 243 events. 0/243 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 658 event pairs, 0 based on Foata normal form. 233/454 useless extension candidates. Maximal degree in co-relation 0. Up to 28 conditions per place. [2022-11-21 16:14:58,262 INFO L137 encePairwiseOnDemand]: 167/196 looper letters, 18 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2022-11-21 16:14:58,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 180 transitions, 425 flow [2022-11-21 16:14:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:14:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:14:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2022-11-21 16:14:58,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8734693877551021 [2022-11-21 16:14:58,265 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2022-11-21 16:14:58,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2022-11-21 16:14:58,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:14:58,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2022-11-21 16:14:58,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:58,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:58,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:58,272 INFO L175 Difference]: Start difference. First operand has 181 places, 196 transitions, 413 flow. Second operand 5 states and 856 transitions. [2022-11-21 16:14:58,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 180 transitions, 425 flow [2022-11-21 16:14:58,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 180 transitions, 419 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-21 16:14:58,276 INFO L231 Difference]: Finished difference. Result has 187 places, 176 transitions, 393 flow [2022-11-21 16:14:58,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=187, PETRI_TRANSITIONS=176} [2022-11-21 16:14:58,277 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 6 predicate places. [2022-11-21 16:14:58,277 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 176 transitions, 393 flow [2022-11-21 16:14:58,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:58,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:14:58,278 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] [2022-11-21 16:14:58,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:14:58,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:14:58,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:58,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1298353835, now seen corresponding path program 1 times [2022-11-21 16:14:58,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:58,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628475715] [2022-11-21 16:14:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:58,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:14:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:14:58,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:58,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628475715] [2022-11-21 16:14:58,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628475715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:58,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:14:58,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:14:58,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973386548] [2022-11-21 16:14:58,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:58,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:14:58,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:58,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:14:58,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:14:58,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 196 [2022-11-21 16:14:58,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 176 transitions, 393 flow. Second operand has 12 states, 12 states have (on average 110.5) internal successors, (1326), 12 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:14:58,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:14:58,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 196 [2022-11-21 16:14:58,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:12,411 INFO L130 PetriNetUnfolder]: 45893/100556 cut-off events. [2022-11-21 16:15:12,411 INFO L131 PetriNetUnfolder]: For 561/561 co-relation queries the response was YES. [2022-11-21 16:15:13,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165935 conditions, 100556 events. 45893/100556 cut-off events. For 561/561 co-relation queries the response was YES. Maximal size of possible extension queue 3300. Compared 1260547 event pairs, 13356 based on Foata normal form. 0/94601 useless extension candidates. Maximal degree in co-relation 165846. Up to 36573 conditions per place. [2022-11-21 16:15:13,631 INFO L137 encePairwiseOnDemand]: 179/196 looper letters, 272 selfloop transitions, 37 changer transitions 0/420 dead transitions. [2022-11-21 16:15:13,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 420 transitions, 1554 flow [2022-11-21 16:15:13,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:15:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:15:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2261 transitions. [2022-11-21 16:15:13,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6408730158730159 [2022-11-21 16:15:13,648 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2261 transitions. [2022-11-21 16:15:13,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2261 transitions. [2022-11-21 16:15:13,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:13,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2261 transitions. [2022-11-21 16:15:13,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 125.61111111111111) internal successors, (2261), 18 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:13,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 196.0) internal successors, (3724), 19 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:13,667 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 196.0) internal successors, (3724), 19 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:13,668 INFO L175 Difference]: Start difference. First operand has 187 places, 176 transitions, 393 flow. Second operand 18 states and 2261 transitions. [2022-11-21 16:15:13,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 420 transitions, 1554 flow [2022-11-21 16:15:13,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 420 transitions, 1552 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:15:13,677 INFO L231 Difference]: Finished difference. Result has 213 places, 210 transitions, 654 flow [2022-11-21 16:15:13,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=654, PETRI_PLACES=213, PETRI_TRANSITIONS=210} [2022-11-21 16:15:13,679 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 32 predicate places. [2022-11-21 16:15:13,679 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 210 transitions, 654 flow [2022-11-21 16:15:13,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 110.5) internal successors, (1326), 12 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:13,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:13,680 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:15:13,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:15:13,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:15:13,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:13,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1109576792, now seen corresponding path program 1 times [2022-11-21 16:15:13,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:13,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624041208] [2022-11-21 16:15:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:13,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:15:13,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:13,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624041208] [2022-11-21 16:15:13,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624041208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:15:13,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:15:13,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:15:13,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494738417] [2022-11-21 16:15:13,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:15:13,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:15:13,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:13,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:15:13,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:15:13,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 196 [2022-11-21 16:15:13,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 210 transitions, 654 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:13,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:13,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 196 [2022-11-21 16:15:13,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:14,195 INFO L130 PetriNetUnfolder]: 171/2027 cut-off events. [2022-11-21 16:15:14,195 INFO L131 PetriNetUnfolder]: For 1319/1488 co-relation queries the response was YES. [2022-11-21 16:15:14,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3351 conditions, 2027 events. 171/2027 cut-off events. For 1319/1488 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 17837 event pairs, 73 based on Foata normal form. 5/1849 useless extension candidates. Maximal degree in co-relation 3122. Up to 248 conditions per place. [2022-11-21 16:15:14,237 INFO L137 encePairwiseOnDemand]: 190/196 looper letters, 10 selfloop transitions, 8 changer transitions 0/210 dead transitions. [2022-11-21 16:15:14,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 210 transitions, 688 flow [2022-11-21 16:15:14,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:15:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:15:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 806 transitions. [2022-11-21 16:15:14,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224489795918367 [2022-11-21 16:15:14,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 806 transitions. [2022-11-21 16:15:14,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 806 transitions. [2022-11-21 16:15:14,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:14,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 806 transitions. [2022-11-21 16:15:14,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.2) internal successors, (806), 5 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:14,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:14,248 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:14,248 INFO L175 Difference]: Start difference. First operand has 213 places, 210 transitions, 654 flow. Second operand 5 states and 806 transitions. [2022-11-21 16:15:14,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 210 transitions, 688 flow [2022-11-21 16:15:14,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 210 transitions, 683 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:15:14,259 INFO L231 Difference]: Finished difference. Result has 214 places, 210 transitions, 669 flow [2022-11-21 16:15:14,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=669, PETRI_PLACES=214, PETRI_TRANSITIONS=210} [2022-11-21 16:15:14,260 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 33 predicate places. [2022-11-21 16:15:14,261 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 210 transitions, 669 flow [2022-11-21 16:15:14,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:14,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:14,262 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] [2022-11-21 16:15:14,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:15:14,262 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:15:14,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:14,263 INFO L85 PathProgramCache]: Analyzing trace with hash 37142783, now seen corresponding path program 1 times [2022-11-21 16:15:14,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:14,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731587074] [2022-11-21 16:15:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:14,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:14,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:14,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731587074] [2022-11-21 16:15:14,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731587074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:15:14,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072713890] [2022-11-21 16:15:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:14,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:14,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:14,374 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:14,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:15:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:14,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:15:14,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:14,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:15:14,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072713890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:15:14,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:15:14,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:15:14,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868995350] [2022-11-21 16:15:14,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:15:14,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:15:14,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:15:14,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:15:14,542 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 196 [2022-11-21 16:15:14,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 210 transitions, 669 flow. Second operand has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:14,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:14,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 196 [2022-11-21 16:15:14,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:15,263 INFO L130 PetriNetUnfolder]: 171/2025 cut-off events. [2022-11-21 16:15:15,263 INFO L131 PetriNetUnfolder]: For 1334/1503 co-relation queries the response was YES. [2022-11-21 16:15:15,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3361 conditions, 2025 events. 171/2025 cut-off events. For 1334/1503 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 17794 event pairs, 73 based on Foata normal form. 5/1847 useless extension candidates. Maximal degree in co-relation 3126. Up to 248 conditions per place. [2022-11-21 16:15:15,291 INFO L137 encePairwiseOnDemand]: 191/196 looper letters, 14 selfloop transitions, 6 changer transitions 0/212 dead transitions. [2022-11-21 16:15:15,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 212 transitions, 711 flow [2022-11-21 16:15:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:15:15,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:15:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1127 transitions. [2022-11-21 16:15:15,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2022-11-21 16:15:15,296 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1127 transitions. [2022-11-21 16:15:15,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1127 transitions. [2022-11-21 16:15:15,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:15,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1127 transitions. [2022-11-21 16:15:15,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:15,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:15,308 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:15,309 INFO L175 Difference]: Start difference. First operand has 214 places, 210 transitions, 669 flow. Second operand 7 states and 1127 transitions. [2022-11-21 16:15:15,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 212 transitions, 711 flow [2022-11-21 16:15:15,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 212 transitions, 699 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:15:15,318 INFO L231 Difference]: Finished difference. Result has 216 places, 209 transitions, 665 flow [2022-11-21 16:15:15,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=665, PETRI_PLACES=216, PETRI_TRANSITIONS=209} [2022-11-21 16:15:15,320 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 35 predicate places. [2022-11-21 16:15:15,320 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 209 transitions, 665 flow [2022-11-21 16:15:15,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:15,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:15,321 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] [2022-11-21 16:15:15,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:15,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:15:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1538364210, now seen corresponding path program 1 times [2022-11-21 16:15:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:15,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425369086] [2022-11-21 16:15:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:15,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:15,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:15,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425369086] [2022-11-21 16:15:15,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425369086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:15:15,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:15:15,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:15:15,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252056633] [2022-11-21 16:15:15,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:15:15,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:15:15,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:15,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:15:15,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:15:15,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 196 [2022-11-21 16:15:15,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 209 transitions, 665 flow. Second operand has 6 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:15,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:15,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 196 [2022-11-21 16:15:15,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:23,348 INFO L130 PetriNetUnfolder]: 15048/44190 cut-off events. [2022-11-21 16:15:23,348 INFO L131 PetriNetUnfolder]: For 62379/64996 co-relation queries the response was YES. [2022-11-21 16:15:23,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92406 conditions, 44190 events. 15048/44190 cut-off events. For 62379/64996 co-relation queries the response was YES. Maximal size of possible extension queue 1555. Compared 579258 event pairs, 5098 based on Foata normal form. 352/39852 useless extension candidates. Maximal degree in co-relation 87039. Up to 9017 conditions per place. [2022-11-21 16:15:23,990 INFO L137 encePairwiseOnDemand]: 181/196 looper letters, 163 selfloop transitions, 44 changer transitions 0/348 dead transitions. [2022-11-21 16:15:23,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 348 transitions, 1689 flow [2022-11-21 16:15:23,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:15:23,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:15:23,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1588 transitions. [2022-11-21 16:15:23,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7365491651205937 [2022-11-21 16:15:23,997 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1588 transitions. [2022-11-21 16:15:23,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1588 transitions. [2022-11-21 16:15:23,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:23,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1588 transitions. [2022-11-21 16:15:24,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.36363636363637) internal successors, (1588), 11 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:24,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 196.0) internal successors, (2352), 12 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:24,010 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 196.0) internal successors, (2352), 12 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:24,011 INFO L175 Difference]: Start difference. First operand has 216 places, 209 transitions, 665 flow. Second operand 11 states and 1588 transitions. [2022-11-21 16:15:24,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 348 transitions, 1689 flow [2022-11-21 16:15:24,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 348 transitions, 1678 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 16:15:24,164 INFO L231 Difference]: Finished difference. Result has 228 places, 246 transitions, 1074 flow [2022-11-21 16:15:24,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1074, PETRI_PLACES=228, PETRI_TRANSITIONS=246} [2022-11-21 16:15:24,165 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 47 predicate places. [2022-11-21 16:15:24,165 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 246 transitions, 1074 flow [2022-11-21 16:15:24,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:24,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:24,166 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] [2022-11-21 16:15:24,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:15:24,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:15:24,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:24,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1172560318, now seen corresponding path program 1 times [2022-11-21 16:15:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:24,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632807463] [2022-11-21 16:15:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:15:24,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:24,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632807463] [2022-11-21 16:15:24,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632807463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:15:24,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382093607] [2022-11-21 16:15:24,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:24,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:24,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:24,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:24,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e78a54a-3958-4a72-9161-92792018c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:15:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:25,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 16:15:25,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:25,311 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:15:25,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:15:25,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:15:25,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:15:25,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:15:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:15:25,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:15:25,686 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_172 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_172) c_~p~0.base) c_~p~0.offset) 2147483647)) is different from false [2022-11-21 16:15:25,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-21 16:15:25,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 16:15:25,986 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 16:15:25,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-21 16:15:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-21 16:15:26,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382093607] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:15:26,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:15:26,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2022-11-21 16:15:26,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306853742] [2022-11-21 16:15:26,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:15:26,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-21 16:15:26,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:26,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-21 16:15:26,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=604, Unknown=2, NotChecked=50, Total=756 [2022-11-21 16:15:26,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 196 [2022-11-21 16:15:26,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 246 transitions, 1074 flow. Second operand has 28 states, 28 states have (on average 110.82142857142857) internal successors, (3103), 28 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:26,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:26,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 196 [2022-11-21 16:15:26,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand