./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:40:27,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:40:27,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:40:27,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:40:27,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:40:27,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:40:27,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:40:27,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:40:27,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:40:27,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:40:27,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:40:27,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:40:27,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:40:27,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:40:27,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:40:27,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:40:27,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:40:27,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:40:27,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:40:27,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:40:27,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:40:27,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:40:27,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:40:27,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:40:27,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:40:27,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:40:27,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:40:27,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:40:27,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:40:27,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:40:27,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:40:27,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:40:27,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:40:27,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:40:27,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:40:27,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:40:27,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:40:27,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:40:28,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:40:28,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:40:28,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:40:28,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:40:28,043 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:40:28,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:40:28,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:40:28,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:40:28,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:40:28,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:40:28,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:40:28,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:40:28,047 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:40:28,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:40:28,048 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:40:28,049 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:40:28,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:40:28,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:40:28,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:40:28,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:40:28,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:40:28,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:40:28,050 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:40:28,050 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:40:28,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:40:28,051 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:40:28,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:40:28,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:40:28,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:40:28,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:40:28,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:28,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:40:28,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:40:28,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:40:28,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:40:28,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:40:28,055 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:40:28,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:40:28,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:40:28,055 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_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 [2022-11-16 11:40:28,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:40:28,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:40:28,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:40:28,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:40:28,383 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:40:28,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/stack_longest-1.i [2022-11-16 11:40:28,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/data/d742943c1/655fbe5ecb474ec381729a679c212a9e/FLAGb396e63a0 [2022-11-16 11:40:28,979 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:40:28,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/sv-benchmarks/c/pthread/stack_longest-1.i [2022-11-16 11:40:29,013 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/data/d742943c1/655fbe5ecb474ec381729a679c212a9e/FLAGb396e63a0 [2022-11-16 11:40:29,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/data/d742943c1/655fbe5ecb474ec381729a679c212a9e [2022-11-16 11:40:29,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:40:29,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:40:29,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:29,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:40:29,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:40:29,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:29" (1/1) ... [2022-11-16 11:40:29,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241e3e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:29, skipping insertion in model container [2022-11-16 11:40:29,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:29" (1/1) ... [2022-11-16 11:40:29,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:40:29,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:40:29,873 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/sv-benchmarks/c/pthread/stack_longest-1.i[41530,41543] [2022-11-16 11:40:29,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:29,927 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:40:29,958 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/sv-benchmarks/c/pthread/stack_longest-1.i[41530,41543] [2022-11-16 11:40:29,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:30,026 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:40:30,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30 WrapperNode [2022-11-16 11:40:30,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:30,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:30,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:40:30,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:40:30,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (1/1) ... [2022-11-16 11:40:30,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (1/1) ... [2022-11-16 11:40:30,078 INFO L138 Inliner]: procedures = 277, calls = 41, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 165 [2022-11-16 11:40:30,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:30,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:40:30,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:40:30,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:40:30,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (1/1) ... [2022-11-16 11:40:30,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (1/1) ... [2022-11-16 11:40:30,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (1/1) ... [2022-11-16 11:40:30,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (1/1) ... [2022-11-16 11:40:30,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (1/1) ... [2022-11-16 11:40:30,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (1/1) ... [2022-11-16 11:40:30,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (1/1) ... [2022-11-16 11:40:30,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (1/1) ... [2022-11-16 11:40:30,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:40:30,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:40:30,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:40:30,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:40:30,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (1/1) ... [2022-11-16 11:40:30,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:30,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:30,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:40:30,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:40:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-16 11:40:30,202 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-16 11:40:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-16 11:40:30,202 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-16 11:40:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:40:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:40:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:40:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:40:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:40:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:40:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:40:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:40:30,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:40:30,205 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:40:30,345 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:40:30,347 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:40:30,673 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:40:30,681 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:40:30,682 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:40:30,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:30 BoogieIcfgContainer [2022-11-16 11:40:30,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:40:30,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:40:30,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:40:30,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:40:30,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:40:29" (1/3) ... [2022-11-16 11:40:30,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f40ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:30, skipping insertion in model container [2022-11-16 11:40:30,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:30" (2/3) ... [2022-11-16 11:40:30,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f40ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:30, skipping insertion in model container [2022-11-16 11:40:30,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:30" (3/3) ... [2022-11-16 11:40:30,719 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2022-11-16 11:40:30,728 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:40:30,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:40:30,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 11:40:30,739 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:40:30,900 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:40:30,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 195 transitions, 406 flow [2022-11-16 11:40:31,082 INFO L130 PetriNetUnfolder]: 10/193 cut-off events. [2022-11-16 11:40:31,082 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:40:31,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 193 events. 10/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 502 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-11-16 11:40:31,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 195 transitions, 406 flow [2022-11-16 11:40:31,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 183 transitions, 375 flow [2022-11-16 11:40:31,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:40:31,118 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;@7b0da2fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:40:31,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 11:40:31,138 INFO L130 PetriNetUnfolder]: 3/81 cut-off events. [2022-11-16 11:40:31,139 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:40:31,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:31,140 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] [2022-11-16 11:40:31,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:31,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1374102497, now seen corresponding path program 1 times [2022-11-16 11:40:31,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:31,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365456891] [2022-11-16 11:40:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:31,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:31,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:31,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:31,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365456891] [2022-11-16 11:40:31,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365456891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:31,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:31,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:31,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534479248] [2022-11-16 11:40:31,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:31,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:31,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:31,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:31,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 195 [2022-11-16 11:40:31,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 183 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:31,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:31,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 195 [2022-11-16 11:40:31,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:31,901 INFO L130 PetriNetUnfolder]: 28/365 cut-off events. [2022-11-16 11:40:31,901 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-16 11:40:31,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 365 events. 28/365 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1639 event pairs, 10 based on Foata normal form. 41/371 useless extension candidates. Maximal degree in co-relation 394. Up to 36 conditions per place. [2022-11-16 11:40:31,909 INFO L137 encePairwiseOnDemand]: 183/195 looper letters, 19 selfloop transitions, 4 changer transitions 0/183 dead transitions. [2022-11-16 11:40:31,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 183 transitions, 430 flow [2022-11-16 11:40:31,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:40:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 907 transitions. [2022-11-16 11:40:31,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302564102564103 [2022-11-16 11:40:31,927 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 907 transitions. [2022-11-16 11:40:31,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 907 transitions. [2022-11-16 11:40:31,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:31,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 907 transitions. [2022-11-16 11:40:31,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:31,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:31,951 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:31,953 INFO L175 Difference]: Start difference. First operand has 180 places, 183 transitions, 375 flow. Second operand 5 states and 907 transitions. [2022-11-16 11:40:31,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 183 transitions, 430 flow [2022-11-16 11:40:31,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 183 transitions, 419 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:40:31,966 INFO L231 Difference]: Finished difference. Result has 180 places, 177 transitions, 384 flow [2022-11-16 11:40:31,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=180, PETRI_TRANSITIONS=177} [2022-11-16 11:40:31,975 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 0 predicate places. [2022-11-16 11:40:31,976 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 177 transitions, 384 flow [2022-11-16 11:40:31,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:31,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:31,978 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:31,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:40:31,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:31,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:31,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1753358228, now seen corresponding path program 1 times [2022-11-16 11:40:31,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:31,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967012060] [2022-11-16 11:40:31,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:31,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:40:32,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:32,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967012060] [2022-11-16 11:40:32,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967012060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:32,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:32,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:32,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915890131] [2022-11-16 11:40:32,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:32,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:32,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:32,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:32,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:32,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 195 [2022-11-16 11:40:32,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 177 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:32,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:32,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 195 [2022-11-16 11:40:32,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:32,321 INFO L130 PetriNetUnfolder]: 27/362 cut-off events. [2022-11-16 11:40:32,321 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-16 11:40:32,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 362 events. 27/362 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1590 event pairs, 3 based on Foata normal form. 2/335 useless extension candidates. Maximal degree in co-relation 395. Up to 21 conditions per place. [2022-11-16 11:40:32,327 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 12 selfloop transitions, 8 changer transitions 0/180 dead transitions. [2022-11-16 11:40:32,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 180 transitions, 431 flow [2022-11-16 11:40:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:40:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 883 transitions. [2022-11-16 11:40:32,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9056410256410257 [2022-11-16 11:40:32,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 883 transitions. [2022-11-16 11:40:32,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 883 transitions. [2022-11-16 11:40:32,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:32,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 883 transitions. [2022-11-16 11:40:32,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.6) internal successors, (883), 5 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:32,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:32,339 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:32,339 INFO L175 Difference]: Start difference. First operand has 180 places, 177 transitions, 384 flow. Second operand 5 states and 883 transitions. [2022-11-16 11:40:32,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 180 transitions, 431 flow [2022-11-16 11:40:32,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 180 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:40:32,347 INFO L231 Difference]: Finished difference. Result has 183 places, 177 transitions, 402 flow [2022-11-16 11:40:32,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=183, PETRI_TRANSITIONS=177} [2022-11-16 11:40:32,349 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 3 predicate places. [2022-11-16 11:40:32,350 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 177 transitions, 402 flow [2022-11-16 11:40:32,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:32,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:32,352 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, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:32,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:40:32,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:32,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1480469220, now seen corresponding path program 1 times [2022-11-16 11:40:32,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:32,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077386151] [2022-11-16 11:40:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:32,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:32,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077386151] [2022-11-16 11:40:32,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077386151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:32,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249917973] [2022-11-16 11:40:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:32,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:32,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:32,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:32,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:40:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:32,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:40:32,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:32,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:40:32,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249917973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:32,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:40:32,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:40:32,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163158512] [2022-11-16 11:40:32,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:32,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:32,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:32,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:32,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:40:32,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 195 [2022-11-16 11:40:32,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 177 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 175.33333333333334) internal successors, (1052), 6 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:32,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:32,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 195 [2022-11-16 11:40:32,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:33,169 INFO L130 PetriNetUnfolder]: 26/359 cut-off events. [2022-11-16 11:40:33,169 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-16 11:40:33,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 359 events. 26/359 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1549 event pairs, 1 based on Foata normal form. 2/332 useless extension candidates. Maximal degree in co-relation 407. Up to 15 conditions per place. [2022-11-16 11:40:33,175 INFO L137 encePairwiseOnDemand]: 190/195 looper letters, 17 selfloop transitions, 6 changer transitions 0/183 dead transitions. [2022-11-16 11:40:33,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 183 transitions, 463 flow [2022-11-16 11:40:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:40:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:40:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1235 transitions. [2022-11-16 11:40:33,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-16 11:40:33,179 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1235 transitions. [2022-11-16 11:40:33,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1235 transitions. [2022-11-16 11:40:33,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:33,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1235 transitions. [2022-11-16 11:40:33,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.42857142857142) internal successors, (1235), 7 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,187 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,188 INFO L175 Difference]: Start difference. First operand has 183 places, 177 transitions, 402 flow. Second operand 7 states and 1235 transitions. [2022-11-16 11:40:33,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 183 transitions, 463 flow [2022-11-16 11:40:33,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 183 transitions, 451 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:40:33,193 INFO L231 Difference]: Finished difference. Result has 185 places, 176 transitions, 398 flow [2022-11-16 11:40:33,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=185, PETRI_TRANSITIONS=176} [2022-11-16 11:40:33,194 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 5 predicate places. [2022-11-16 11:40:33,194 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 176 transitions, 398 flow [2022-11-16 11:40:33,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 175.33333333333334) internal successors, (1052), 6 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:33,195 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:33,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:33,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:33,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:33,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:33,405 INFO L85 PathProgramCache]: Analyzing trace with hash -307211604, now seen corresponding path program 1 times [2022-11-16 11:40:33,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:33,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302143279] [2022-11-16 11:40:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:33,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:33,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:33,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302143279] [2022-11-16 11:40:33,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302143279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:33,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:33,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:40:33,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552097113] [2022-11-16 11:40:33,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:33,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:40:33,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:40:33,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:40:33,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 195 [2022-11-16 11:40:33,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 176 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:33,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 195 [2022-11-16 11:40:33,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:34,115 INFO L130 PetriNetUnfolder]: 379/2571 cut-off events. [2022-11-16 11:40:34,115 INFO L131 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2022-11-16 11:40:34,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 2571 events. 379/2571 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 21419 event pairs, 140 based on Foata normal form. 0/2262 useless extension candidates. Maximal degree in co-relation 2622. Up to 347 conditions per place. [2022-11-16 11:40:34,134 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 58 selfloop transitions, 13 changer transitions 1/225 dead transitions. [2022-11-16 11:40:34,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 225 transitions, 648 flow [2022-11-16 11:40:34,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:40:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:40:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1389 transitions. [2022-11-16 11:40:34,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8903846153846153 [2022-11-16 11:40:34,138 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1389 transitions. [2022-11-16 11:40:34,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1389 transitions. [2022-11-16 11:40:34,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:34,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1389 transitions. [2022-11-16 11:40:34,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.625) internal successors, (1389), 8 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:34,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:34,147 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:34,147 INFO L175 Difference]: Start difference. First operand has 185 places, 176 transitions, 398 flow. Second operand 8 states and 1389 transitions. [2022-11-16 11:40:34,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 225 transitions, 648 flow [2022-11-16 11:40:34,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 225 transitions, 637 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:40:34,154 INFO L231 Difference]: Finished difference. Result has 193 places, 187 transitions, 485 flow [2022-11-16 11:40:34,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=485, PETRI_PLACES=193, PETRI_TRANSITIONS=187} [2022-11-16 11:40:34,155 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 13 predicate places. [2022-11-16 11:40:34,155 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 187 transitions, 485 flow [2022-11-16 11:40:34,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:34,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:34,156 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:34,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:40:34,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:34,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1403371062, now seen corresponding path program 1 times [2022-11-16 11:40:34,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:34,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655375582] [2022-11-16 11:40:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:34,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:34,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:34,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655375582] [2022-11-16 11:40:34,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655375582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:34,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:34,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:34,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758246475] [2022-11-16 11:40:34,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:34,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:34,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:34,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:34,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:34,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 195 [2022-11-16 11:40:34,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 187 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 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) [2022-11-16 11:40:34,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:34,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 195 [2022-11-16 11:40:34,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:34,840 INFO L130 PetriNetUnfolder]: 226/2044 cut-off events. [2022-11-16 11:40:34,840 INFO L131 PetriNetUnfolder]: For 392/478 co-relation queries the response was YES. [2022-11-16 11:40:34,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 2044 events. 226/2044 cut-off events. For 392/478 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 15642 event pairs, 118 based on Foata normal form. 21/1857 useless extension candidates. Maximal degree in co-relation 2357. Up to 335 conditions per place. [2022-11-16 11:40:34,858 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 33 selfloop transitions, 6 changer transitions 0/203 dead transitions. [2022-11-16 11:40:34,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 203 transitions, 608 flow [2022-11-16 11:40:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:40:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 879 transitions. [2022-11-16 11:40:34,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9015384615384615 [2022-11-16 11:40:34,862 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 879 transitions. [2022-11-16 11:40:34,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 879 transitions. [2022-11-16 11:40:34,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:34,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 879 transitions. [2022-11-16 11:40:34,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:34,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:34,867 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:34,868 INFO L175 Difference]: Start difference. First operand has 193 places, 187 transitions, 485 flow. Second operand 5 states and 879 transitions. [2022-11-16 11:40:34,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 203 transitions, 608 flow [2022-11-16 11:40:34,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 203 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:40:34,876 INFO L231 Difference]: Finished difference. Result has 200 places, 189 transitions, 519 flow [2022-11-16 11:40:34,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=200, PETRI_TRANSITIONS=189} [2022-11-16 11:40:34,881 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 20 predicate places. [2022-11-16 11:40:34,881 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 189 transitions, 519 flow [2022-11-16 11:40:34,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 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) [2022-11-16 11:40:34,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:34,882 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:34,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:40:34,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:34,883 INFO L85 PathProgramCache]: Analyzing trace with hash 921486497, now seen corresponding path program 1 times [2022-11-16 11:40:34,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:34,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792379950] [2022-11-16 11:40:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:34,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:35,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:35,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792379950] [2022-11-16 11:40:35,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792379950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:35,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:35,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:35,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946369171] [2022-11-16 11:40:35,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:35,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:35,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:35,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:35,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:35,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 195 [2022-11-16 11:40:35,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 189 transitions, 519 flow. Second operand has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:35,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 195 [2022-11-16 11:40:35,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:35,396 INFO L130 PetriNetUnfolder]: 74/1328 cut-off events. [2022-11-16 11:40:35,396 INFO L131 PetriNetUnfolder]: For 227/286 co-relation queries the response was YES. [2022-11-16 11:40:35,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 1328 events. 74/1328 cut-off events. For 227/286 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8508 event pairs, 19 based on Foata normal form. 2/1227 useless extension candidates. Maximal degree in co-relation 1487. Up to 102 conditions per place. [2022-11-16 11:40:35,412 INFO L137 encePairwiseOnDemand]: 188/195 looper letters, 19 selfloop transitions, 4 changer transitions 0/198 dead transitions. [2022-11-16 11:40:35,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 198 transitions, 589 flow [2022-11-16 11:40:35,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:40:35,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 891 transitions. [2022-11-16 11:40:35,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9138461538461539 [2022-11-16 11:40:35,416 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 891 transitions. [2022-11-16 11:40:35,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 891 transitions. [2022-11-16 11:40:35,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:35,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 891 transitions. [2022-11-16 11:40:35,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,421 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,421 INFO L175 Difference]: Start difference. First operand has 200 places, 189 transitions, 519 flow. Second operand 5 states and 891 transitions. [2022-11-16 11:40:35,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 198 transitions, 589 flow [2022-11-16 11:40:35,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 198 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:40:35,428 INFO L231 Difference]: Finished difference. Result has 206 places, 192 transitions, 549 flow [2022-11-16 11:40:35,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=549, PETRI_PLACES=206, PETRI_TRANSITIONS=192} [2022-11-16 11:40:35,431 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 26 predicate places. [2022-11-16 11:40:35,431 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 192 transitions, 549 flow [2022-11-16 11:40:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:35,438 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:35,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:40:35,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:35,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:35,439 INFO L85 PathProgramCache]: Analyzing trace with hash 466559977, now seen corresponding path program 1 times [2022-11-16 11:40:35,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:35,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165544403] [2022-11-16 11:40:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:35,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:35,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:35,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165544403] [2022-11-16 11:40:35,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165544403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:35,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:35,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:35,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539705912] [2022-11-16 11:40:35,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:35,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:40:35,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:35,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:40:35,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:35,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 195 [2022-11-16 11:40:35,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 192 transitions, 549 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:35,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 195 [2022-11-16 11:40:35,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:35,881 INFO L130 PetriNetUnfolder]: 47/1176 cut-off events. [2022-11-16 11:40:35,882 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2022-11-16 11:40:35,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 1176 events. 47/1176 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6572 event pairs, 12 based on Foata normal form. 12/1131 useless extension candidates. Maximal degree in co-relation 1409. Up to 42 conditions per place. [2022-11-16 11:40:35,891 INFO L137 encePairwiseOnDemand]: 191/195 looper letters, 12 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2022-11-16 11:40:35,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 191 transitions, 566 flow [2022-11-16 11:40:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:40:35,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:40:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2022-11-16 11:40:35,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9179487179487179 [2022-11-16 11:40:35,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2022-11-16 11:40:35,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2022-11-16 11:40:35,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:35,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2022-11-16 11:40:35,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,898 INFO L175 Difference]: Start difference. First operand has 206 places, 192 transitions, 549 flow. Second operand 3 states and 537 transitions. [2022-11-16 11:40:35,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 191 transitions, 566 flow [2022-11-16 11:40:35,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 191 transitions, 558 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 11:40:35,905 INFO L231 Difference]: Finished difference. Result has 205 places, 189 transitions, 527 flow [2022-11-16 11:40:35,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=527, PETRI_PLACES=205, PETRI_TRANSITIONS=189} [2022-11-16 11:40:35,906 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 25 predicate places. [2022-11-16 11:40:35,907 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 189 transitions, 527 flow [2022-11-16 11:40:35,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:35,908 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:35,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:40:35,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2318918, now seen corresponding path program 1 times [2022-11-16 11:40:35,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:35,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129446251] [2022-11-16 11:40:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:35,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:36,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:36,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129446251] [2022-11-16 11:40:36,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129446251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:36,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:36,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:40:36,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002907627] [2022-11-16 11:40:36,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:36,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:36,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:36,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:36,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:40:36,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 195 [2022-11-16 11:40:36,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 189 transitions, 527 flow. Second operand has 6 states, 6 states have (on average 164.5) internal successors, (987), 6 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:36,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:36,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 195 [2022-11-16 11:40:36,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:36,495 INFO L130 PetriNetUnfolder]: 105/1513 cut-off events. [2022-11-16 11:40:36,495 INFO L131 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2022-11-16 11:40:36,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 1513 events. 105/1513 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8937 event pairs, 38 based on Foata normal form. 6/1451 useless extension candidates. Maximal degree in co-relation 1322. Up to 142 conditions per place. [2022-11-16 11:40:36,506 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 51 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2022-11-16 11:40:36,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 219 transitions, 730 flow [2022-11-16 11:40:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:40:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:40:36,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1357 transitions. [2022-11-16 11:40:36,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8698717948717949 [2022-11-16 11:40:36,510 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1357 transitions. [2022-11-16 11:40:36,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1357 transitions. [2022-11-16 11:40:36,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:36,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1357 transitions. [2022-11-16 11:40:36,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 169.625) internal successors, (1357), 8 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:36,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:36,518 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:36,518 INFO L175 Difference]: Start difference. First operand has 205 places, 189 transitions, 527 flow. Second operand 8 states and 1357 transitions. [2022-11-16 11:40:36,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 219 transitions, 730 flow [2022-11-16 11:40:36,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 219 transitions, 726 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:40:36,524 INFO L231 Difference]: Finished difference. Result has 214 places, 193 transitions, 574 flow [2022-11-16 11:40:36,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=574, PETRI_PLACES=214, PETRI_TRANSITIONS=193} [2022-11-16 11:40:36,525 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 34 predicate places. [2022-11-16 11:40:36,526 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 193 transitions, 574 flow [2022-11-16 11:40:36,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.5) internal successors, (987), 6 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:36,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:36,527 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:36,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:40:36,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:36,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:36,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1001302981, now seen corresponding path program 1 times [2022-11-16 11:40:36,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:36,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767325328] [2022-11-16 11:40:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:36,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:36,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:36,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767325328] [2022-11-16 11:40:36,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767325328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:36,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:36,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:40:36,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899018686] [2022-11-16 11:40:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:36,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:36,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:40:36,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 195 [2022-11-16 11:40:36,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 193 transitions, 574 flow. Second operand has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:36,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:36,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 195 [2022-11-16 11:40:36,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:37,231 INFO L130 PetriNetUnfolder]: 154/2135 cut-off events. [2022-11-16 11:40:37,231 INFO L131 PetriNetUnfolder]: For 403/403 co-relation queries the response was YES. [2022-11-16 11:40:37,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3319 conditions, 2135 events. 154/2135 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 14324 event pairs, 42 based on Foata normal form. 8/2063 useless extension candidates. Maximal degree in co-relation 2684. Up to 198 conditions per place. [2022-11-16 11:40:37,250 INFO L137 encePairwiseOnDemand]: 185/195 looper letters, 53 selfloop transitions, 14 changer transitions 0/226 dead transitions. [2022-11-16 11:40:37,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 226 transitions, 827 flow [2022-11-16 11:40:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:40:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:40:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1356 transitions. [2022-11-16 11:40:37,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8692307692307693 [2022-11-16 11:40:37,255 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1356 transitions. [2022-11-16 11:40:37,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1356 transitions. [2022-11-16 11:40:37,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:37,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1356 transitions. [2022-11-16 11:40:37,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 169.5) internal successors, (1356), 8 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:37,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:37,263 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:37,263 INFO L175 Difference]: Start difference. First operand has 214 places, 193 transitions, 574 flow. Second operand 8 states and 1356 transitions. [2022-11-16 11:40:37,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 226 transitions, 827 flow [2022-11-16 11:40:37,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 226 transitions, 819 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:40:37,271 INFO L231 Difference]: Finished difference. Result has 222 places, 202 transitions, 688 flow [2022-11-16 11:40:37,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=688, PETRI_PLACES=222, PETRI_TRANSITIONS=202} [2022-11-16 11:40:37,272 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 42 predicate places. [2022-11-16 11:40:37,272 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 202 transitions, 688 flow [2022-11-16 11:40:37,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:37,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:37,274 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:37,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:40:37,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:37,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:37,274 INFO L85 PathProgramCache]: Analyzing trace with hash 797760399, now seen corresponding path program 1 times [2022-11-16 11:40:37,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:37,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531728748] [2022-11-16 11:40:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:37,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:37,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:37,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531728748] [2022-11-16 11:40:37,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531728748] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:37,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072046858] [2022-11-16 11:40:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:37,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:37,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:37,471 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:37,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:40:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:37,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:40:37,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:37,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:37,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072046858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:37,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:40:37,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:40:37,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522594738] [2022-11-16 11:40:37,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:37,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:40:37,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:40:37,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:40:37,994 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 195 [2022-11-16 11:40:37,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 202 transitions, 688 flow. Second operand has 12 states, 12 states have (on average 171.25) internal successors, (2055), 12 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:37,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:37,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 195 [2022-11-16 11:40:37,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:38,894 INFO L130 PetriNetUnfolder]: 174/2947 cut-off events. [2022-11-16 11:40:38,895 INFO L131 PetriNetUnfolder]: For 1042/1048 co-relation queries the response was YES. [2022-11-16 11:40:38,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4636 conditions, 2947 events. 174/2947 cut-off events. For 1042/1048 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 19845 event pairs, 42 based on Foata normal form. 24/2856 useless extension candidates. Maximal degree in co-relation 3851. Up to 117 conditions per place. [2022-11-16 11:40:38,918 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 65 selfloop transitions, 26 changer transitions 0/261 dead transitions. [2022-11-16 11:40:38,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 261 transitions, 1097 flow [2022-11-16 11:40:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:40:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:40:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3111 transitions. [2022-11-16 11:40:38,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8863247863247863 [2022-11-16 11:40:38,927 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3111 transitions. [2022-11-16 11:40:38,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3111 transitions. [2022-11-16 11:40:38,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:38,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3111 transitions. [2022-11-16 11:40:38,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 172.83333333333334) internal successors, (3111), 18 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:38,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 195.0) internal successors, (3705), 19 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:38,946 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 195.0) internal successors, (3705), 19 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:38,946 INFO L175 Difference]: Start difference. First operand has 222 places, 202 transitions, 688 flow. Second operand 18 states and 3111 transitions. [2022-11-16 11:40:38,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 261 transitions, 1097 flow [2022-11-16 11:40:38,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 261 transitions, 1089 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:40:38,959 INFO L231 Difference]: Finished difference. Result has 240 places, 218 transitions, 858 flow [2022-11-16 11:40:38,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=858, PETRI_PLACES=240, PETRI_TRANSITIONS=218} [2022-11-16 11:40:38,961 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 60 predicate places. [2022-11-16 11:40:38,961 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 218 transitions, 858 flow [2022-11-16 11:40:38,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 171.25) internal successors, (2055), 12 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:38,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:38,963 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:38,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:39,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:39,173 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:39,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:39,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1039230874, now seen corresponding path program 1 times [2022-11-16 11:40:39,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:39,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565211319] [2022-11-16 11:40:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:39,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:39,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:39,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565211319] [2022-11-16 11:40:39,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565211319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:39,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761560436] [2022-11-16 11:40:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:39,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:39,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:39,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:39,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:40:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:39,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:40:39,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:39,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:40:39,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761560436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:39,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:40:39,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:40:39,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508290343] [2022-11-16 11:40:39,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:39,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:39,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:39,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:39,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:40:39,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 195 [2022-11-16 11:40:39,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 218 transitions, 858 flow. Second operand has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:39,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:39,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 195 [2022-11-16 11:40:39,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:40,585 INFO L130 PetriNetUnfolder]: 184/3130 cut-off events. [2022-11-16 11:40:40,585 INFO L131 PetriNetUnfolder]: For 1679/1685 co-relation queries the response was YES. [2022-11-16 11:40:40,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5132 conditions, 3130 events. 184/3130 cut-off events. For 1679/1685 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 21286 event pairs, 43 based on Foata normal form. 30/3035 useless extension candidates. Maximal degree in co-relation 4198. Up to 235 conditions per place. [2022-11-16 11:40:40,612 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 49 selfloop transitions, 19 changer transitions 0/238 dead transitions. [2022-11-16 11:40:40,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 238 transitions, 1083 flow [2022-11-16 11:40:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:40:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:40:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1391 transitions. [2022-11-16 11:40:40,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8916666666666667 [2022-11-16 11:40:40,616 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1391 transitions. [2022-11-16 11:40:40,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1391 transitions. [2022-11-16 11:40:40,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:40,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1391 transitions. [2022-11-16 11:40:40,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.875) internal successors, (1391), 8 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:40,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:40,633 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:40,633 INFO L175 Difference]: Start difference. First operand has 240 places, 218 transitions, 858 flow. Second operand 8 states and 1391 transitions. [2022-11-16 11:40:40,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 238 transitions, 1083 flow [2022-11-16 11:40:40,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 238 transitions, 1026 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-11-16 11:40:40,647 INFO L231 Difference]: Finished difference. Result has 242 places, 220 transitions, 903 flow [2022-11-16 11:40:40,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=903, PETRI_PLACES=242, PETRI_TRANSITIONS=220} [2022-11-16 11:40:40,648 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 62 predicate places. [2022-11-16 11:40:40,648 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 220 transitions, 903 flow [2022-11-16 11:40:40,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:40,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:40,649 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:40,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:40,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:40:40,859 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:40,860 INFO L85 PathProgramCache]: Analyzing trace with hash -890957254, now seen corresponding path program 1 times [2022-11-16 11:40:40,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:40,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228843284] [2022-11-16 11:40:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:40,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:40:41,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:41,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228843284] [2022-11-16 11:40:41,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228843284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:41,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:41,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:41,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83679732] [2022-11-16 11:40:41,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:41,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:41,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:41,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:41,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:41,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 195 [2022-11-16 11:40:41,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 220 transitions, 903 flow. Second operand has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:41,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:41,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 195 [2022-11-16 11:40:41,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:41,765 INFO L130 PetriNetUnfolder]: 131/2841 cut-off events. [2022-11-16 11:40:41,765 INFO L131 PetriNetUnfolder]: For 1260/1260 co-relation queries the response was YES. [2022-11-16 11:40:41,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4379 conditions, 2841 events. 131/2841 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 17899 event pairs, 29 based on Foata normal form. 16/2747 useless extension candidates. Maximal degree in co-relation 3788. Up to 95 conditions per place. [2022-11-16 11:40:41,799 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 12 selfloop transitions, 8 changer transitions 0/223 dead transitions. [2022-11-16 11:40:41,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 223 transitions, 953 flow [2022-11-16 11:40:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:40:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 883 transitions. [2022-11-16 11:40:41,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9056410256410257 [2022-11-16 11:40:41,804 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 883 transitions. [2022-11-16 11:40:41,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 883 transitions. [2022-11-16 11:40:41,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:41,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 883 transitions. [2022-11-16 11:40:41,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.6) internal successors, (883), 5 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:41,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:41,809 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:41,810 INFO L175 Difference]: Start difference. First operand has 242 places, 220 transitions, 903 flow. Second operand 5 states and 883 transitions. [2022-11-16 11:40:41,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 223 transitions, 953 flow [2022-11-16 11:40:41,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 223 transitions, 937 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-16 11:40:41,825 INFO L231 Difference]: Finished difference. Result has 243 places, 220 transitions, 907 flow [2022-11-16 11:40:41,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=907, PETRI_PLACES=243, PETRI_TRANSITIONS=220} [2022-11-16 11:40:41,827 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 63 predicate places. [2022-11-16 11:40:41,827 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 220 transitions, 907 flow [2022-11-16 11:40:41,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:41,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:41,828 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:41,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:40:41,828 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:41,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:41,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1849870570, now seen corresponding path program 1 times [2022-11-16 11:40:41,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:41,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027920090] [2022-11-16 11:40:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:41,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:42,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:42,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027920090] [2022-11-16 11:40:42,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027920090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:42,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949348229] [2022-11-16 11:40:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:42,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:42,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:42,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:42,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:40:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:42,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:40:42,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:42,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:40:42,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949348229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:42,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:40:42,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:40:42,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071795557] [2022-11-16 11:40:42,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:42,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:42,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:42,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:40:42,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 195 [2022-11-16 11:40:42,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 220 transitions, 907 flow. Second operand has 6 states, 6 states have (on average 175.16666666666666) internal successors, (1051), 6 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:42,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:42,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 195 [2022-11-16 11:40:42,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:43,098 INFO L130 PetriNetUnfolder]: 127/2821 cut-off events. [2022-11-16 11:40:43,099 INFO L131 PetriNetUnfolder]: For 1278/1278 co-relation queries the response was YES. [2022-11-16 11:40:43,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4393 conditions, 2821 events. 127/2821 cut-off events. For 1278/1278 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 17713 event pairs, 19 based on Foata normal form. 16/2727 useless extension candidates. Maximal degree in co-relation 3817. Up to 90 conditions per place. [2022-11-16 11:40:43,135 INFO L137 encePairwiseOnDemand]: 190/195 looper letters, 17 selfloop transitions, 6 changer transitions 3/226 dead transitions. [2022-11-16 11:40:43,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 226 transitions, 973 flow [2022-11-16 11:40:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:40:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:40:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1235 transitions. [2022-11-16 11:40:43,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-16 11:40:43,140 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1235 transitions. [2022-11-16 11:40:43,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1235 transitions. [2022-11-16 11:40:43,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:43,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1235 transitions. [2022-11-16 11:40:43,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.42857142857142) internal successors, (1235), 7 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:43,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:43,148 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:43,148 INFO L175 Difference]: Start difference. First operand has 243 places, 220 transitions, 907 flow. Second operand 7 states and 1235 transitions. [2022-11-16 11:40:43,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 226 transitions, 973 flow [2022-11-16 11:40:43,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 226 transitions, 961 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:40:43,164 INFO L231 Difference]: Finished difference. Result has 245 places, 216 transitions, 897 flow [2022-11-16 11:40:43,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=897, PETRI_PLACES=245, PETRI_TRANSITIONS=216} [2022-11-16 11:40:43,167 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 65 predicate places. [2022-11-16 11:40:43,167 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 216 transitions, 897 flow [2022-11-16 11:40:43,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 175.16666666666666) internal successors, (1051), 6 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:43,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:43,168 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:43,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 11:40:43,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:43,374 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:43,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:43,374 INFO L85 PathProgramCache]: Analyzing trace with hash 186146347, now seen corresponding path program 1 times [2022-11-16 11:40:43,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:43,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126148125] [2022-11-16 11:40:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:43,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:43,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:43,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126148125] [2022-11-16 11:40:43,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126148125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:43,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752280212] [2022-11-16 11:40:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:43,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:43,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:43,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:43,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:40:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:43,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:40:43,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:44,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:44,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752280212] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:44,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:40:44,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 11:40:44,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80147094] [2022-11-16 11:40:44,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:44,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:40:44,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:44,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:40:44,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:40:44,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 195 [2022-11-16 11:40:44,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 216 transitions, 897 flow. Second operand has 16 states, 16 states have (on average 165.5) internal successors, (2648), 16 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:44,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:44,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 195 [2022-11-16 11:40:44,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:45,473 INFO L130 PetriNetUnfolder]: 249/3437 cut-off events. [2022-11-16 11:40:45,474 INFO L131 PetriNetUnfolder]: For 2031/2031 co-relation queries the response was YES. [2022-11-16 11:40:45,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 3437 events. 249/3437 cut-off events. For 2031/2031 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 25126 event pairs, 62 based on Foata normal form. 38/3360 useless extension candidates. Maximal degree in co-relation 4827. Up to 120 conditions per place. [2022-11-16 11:40:45,516 INFO L137 encePairwiseOnDemand]: 182/195 looper letters, 81 selfloop transitions, 47 changer transitions 0/283 dead transitions. [2022-11-16 11:40:45,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 283 transitions, 1399 flow [2022-11-16 11:40:45,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:40:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-16 11:40:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3834 transitions. [2022-11-16 11:40:45,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8548494983277592 [2022-11-16 11:40:45,526 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3834 transitions. [2022-11-16 11:40:45,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3834 transitions. [2022-11-16 11:40:45,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:45,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3834 transitions. [2022-11-16 11:40:45,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 166.69565217391303) internal successors, (3834), 23 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:45,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 195.0) internal successors, (4680), 24 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:45,547 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 195.0) internal successors, (4680), 24 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:45,547 INFO L175 Difference]: Start difference. First operand has 245 places, 216 transitions, 897 flow. Second operand 23 states and 3834 transitions. [2022-11-16 11:40:45,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 283 transitions, 1399 flow [2022-11-16 11:40:45,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 283 transitions, 1388 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:40:45,564 INFO L231 Difference]: Finished difference. Result has 263 places, 228 transitions, 1096 flow [2022-11-16 11:40:45,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1096, PETRI_PLACES=263, PETRI_TRANSITIONS=228} [2022-11-16 11:40:45,566 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 83 predicate places. [2022-11-16 11:40:45,566 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 228 transitions, 1096 flow [2022-11-16 11:40:45,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 165.5) internal successors, (2648), 16 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:45,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:45,568 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:45,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:45,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:45,774 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1190296477, now seen corresponding path program 1 times [2022-11-16 11:40:45,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:45,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854464889] [2022-11-16 11:40:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:45,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:46,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:46,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854464889] [2022-11-16 11:40:46,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854464889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:46,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699907418] [2022-11-16 11:40:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:46,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:46,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:46,027 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:46,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:40:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:46,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:40:46,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:46,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:46,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699907418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:46,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:40:46,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-16 11:40:46,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699192127] [2022-11-16 11:40:46,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:46,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:40:46,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:46,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:40:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:40:46,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 195 [2022-11-16 11:40:46,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 228 transitions, 1096 flow. Second operand has 14 states, 14 states have (on average 166.14285714285714) internal successors, (2326), 14 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:46,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:46,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 195 [2022-11-16 11:40:46,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:48,500 INFO L130 PetriNetUnfolder]: 396/5196 cut-off events. [2022-11-16 11:40:48,500 INFO L131 PetriNetUnfolder]: For 3628/3628 co-relation queries the response was YES. [2022-11-16 11:40:48,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9023 conditions, 5196 events. 396/5196 cut-off events. For 3628/3628 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 40496 event pairs, 58 based on Foata normal form. 53/5093 useless extension candidates. Maximal degree in co-relation 8002. Up to 266 conditions per place. [2022-11-16 11:40:48,543 INFO L137 encePairwiseOnDemand]: 183/195 looper letters, 118 selfloop transitions, 78 changer transitions 0/351 dead transitions. [2022-11-16 11:40:48,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 351 transitions, 2346 flow [2022-11-16 11:40:48,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:40:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:40:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4013 transitions. [2022-11-16 11:40:48,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8574786324786324 [2022-11-16 11:40:48,553 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4013 transitions. [2022-11-16 11:40:48,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4013 transitions. [2022-11-16 11:40:48,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:48,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4013 transitions. [2022-11-16 11:40:48,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 167.20833333333334) internal successors, (4013), 24 states have internal predecessors, (4013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:48,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 195.0) internal successors, (4875), 25 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:48,576 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 195.0) internal successors, (4875), 25 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:48,577 INFO L175 Difference]: Start difference. First operand has 263 places, 228 transitions, 1096 flow. Second operand 24 states and 4013 transitions. [2022-11-16 11:40:48,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 351 transitions, 2346 flow [2022-11-16 11:40:48,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 351 transitions, 2169 flow, removed 78 selfloop flow, removed 5 redundant places. [2022-11-16 11:40:48,606 INFO L231 Difference]: Finished difference. Result has 290 places, 282 transitions, 1832 flow [2022-11-16 11:40:48,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1832, PETRI_PLACES=290, PETRI_TRANSITIONS=282} [2022-11-16 11:40:48,608 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 110 predicate places. [2022-11-16 11:40:48,608 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 282 transitions, 1832 flow [2022-11-16 11:40:48,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 166.14285714285714) internal successors, (2326), 14 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:48,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:48,609 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:48,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:48,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:40:48,815 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:48,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:48,816 INFO L85 PathProgramCache]: Analyzing trace with hash -761740298, now seen corresponding path program 2 times [2022-11-16 11:40:48,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:48,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943699286] [2022-11-16 11:40:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:48,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:49,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:49,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943699286] [2022-11-16 11:40:49,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943699286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:49,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553810952] [2022-11-16 11:40:49,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:40:49,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:49,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:49,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:49,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:40:49,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:40:49,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:40:49,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:40:49,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:49,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:50,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553810952] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:50,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:40:50,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-16 11:40:50,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653653575] [2022-11-16 11:40:50,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:50,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:40:50,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:50,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:40:50,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:40:50,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 195 [2022-11-16 11:40:50,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 282 transitions, 1832 flow. Second operand has 24 states, 24 states have (on average 171.625) internal successors, (4119), 24 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:50,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:50,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 195 [2022-11-16 11:40:50,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:53,363 INFO L130 PetriNetUnfolder]: 464/7809 cut-off events. [2022-11-16 11:40:53,363 INFO L131 PetriNetUnfolder]: For 7977/7980 co-relation queries the response was YES. [2022-11-16 11:40:53,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13796 conditions, 7809 events. 464/7809 cut-off events. For 7977/7980 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 57473 event pairs, 128 based on Foata normal form. 48/7582 useless extension candidates. Maximal degree in co-relation 12776. Up to 405 conditions per place. [2022-11-16 11:40:53,422 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 176 selfloop transitions, 70 changer transitions 0/421 dead transitions. [2022-11-16 11:40:53,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 421 transitions, 3155 flow [2022-11-16 11:40:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:40:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:40:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5722 transitions. [2022-11-16 11:40:53,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8891996891996892 [2022-11-16 11:40:53,431 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5722 transitions. [2022-11-16 11:40:53,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5722 transitions. [2022-11-16 11:40:53,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:53,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5722 transitions. [2022-11-16 11:40:53,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 173.3939393939394) internal successors, (5722), 33 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 195.0) internal successors, (6630), 34 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,505 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 195.0) internal successors, (6630), 34 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,505 INFO L175 Difference]: Start difference. First operand has 290 places, 282 transitions, 1832 flow. Second operand 33 states and 5722 transitions. [2022-11-16 11:40:53,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 421 transitions, 3155 flow [2022-11-16 11:40:53,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 421 transitions, 3027 flow, removed 60 selfloop flow, removed 3 redundant places. [2022-11-16 11:40:53,554 INFO L231 Difference]: Finished difference. Result has 326 places, 316 transitions, 2348 flow [2022-11-16 11:40:53,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2348, PETRI_PLACES=326, PETRI_TRANSITIONS=316} [2022-11-16 11:40:53,555 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 146 predicate places. [2022-11-16 11:40:53,555 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 316 transitions, 2348 flow [2022-11-16 11:40:53,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 171.625) internal successors, (4119), 24 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:53,557 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:53,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:53,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:40:53,763 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:40:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:53,764 INFO L85 PathProgramCache]: Analyzing trace with hash -771779733, now seen corresponding path program 1 times [2022-11-16 11:40:53,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:53,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78526822] [2022-11-16 11:40:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:53,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:40:54,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:54,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78526822] [2022-11-16 11:40:54,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78526822] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:54,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824087305] [2022-11-16 11:40:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:54,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:54,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:54,274 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:54,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:40:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:54,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:40:54,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-16 11:40:54,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-16 11:40:55,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824087305] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:55,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:40:55,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-16 11:40:55,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132502693] [2022-11-16 11:40:55,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:55,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:40:55,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:55,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:40:55,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:40:55,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 195 [2022-11-16 11:40:55,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 316 transitions, 2348 flow. Second operand has 18 states, 18 states have (on average 166.11111111111111) internal successors, (2990), 18 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:55,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:55,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 195 [2022-11-16 11:40:55,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:59,710 INFO L130 PetriNetUnfolder]: 904/11840 cut-off events. [2022-11-16 11:40:59,710 INFO L131 PetriNetUnfolder]: For 12146/12146 co-relation queries the response was YES. [2022-11-16 11:40:59,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21656 conditions, 11840 events. 904/11840 cut-off events. For 12146/12146 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 105950 event pairs, 211 based on Foata normal form. 23/11482 useless extension candidates. Maximal degree in co-relation 20470. Up to 549 conditions per place. [2022-11-16 11:40:59,808 INFO L137 encePairwiseOnDemand]: 183/195 looper letters, 190 selfloop transitions, 204 changer transitions 0/549 dead transitions. [2022-11-16 11:40:59,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 549 transitions, 5028 flow [2022-11-16 11:40:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:40:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:40:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6330 transitions. [2022-11-16 11:40:59,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.854251012145749 [2022-11-16 11:40:59,818 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6330 transitions. [2022-11-16 11:40:59,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6330 transitions. [2022-11-16 11:40:59,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:59,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6330 transitions. [2022-11-16 11:40:59,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 166.57894736842104) internal successors, (6330), 38 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:59,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 195.0) internal successors, (7605), 39 states have internal predecessors, (7605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:59,845 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 195.0) internal successors, (7605), 39 states have internal predecessors, (7605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:59,846 INFO L175 Difference]: Start difference. First operand has 326 places, 316 transitions, 2348 flow. Second operand 38 states and 6330 transitions. [2022-11-16 11:40:59,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 549 transitions, 5028 flow [2022-11-16 11:40:59,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 549 transitions, 4906 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-11-16 11:40:59,928 INFO L231 Difference]: Finished difference. Result has 365 places, 435 transitions, 4403 flow [2022-11-16 11:40:59,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4403, PETRI_PLACES=365, PETRI_TRANSITIONS=435} [2022-11-16 11:40:59,929 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 185 predicate places. [2022-11-16 11:40:59,929 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 435 transitions, 4403 flow [2022-11-16 11:40:59,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 166.11111111111111) internal successors, (2990), 18 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:59,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:59,930 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:59,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:00,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:41:00,139 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:41:00,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:00,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2028281655, now seen corresponding path program 2 times [2022-11-16 11:41:00,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:00,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17936466] [2022-11-16 11:41:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:00,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:00,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:00,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17936466] [2022-11-16 11:41:00,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17936466] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:00,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454313973] [2022-11-16 11:41:00,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:41:00,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:00,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:41:00,823 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:41:00,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:41:01,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:41:01,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:41:01,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:41:01,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:01,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:02,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454313973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:41:02,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:41:02,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-11-16 11:41:02,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13810607] [2022-11-16 11:41:02,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:41:02,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:41:02,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:02,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:41:02,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:41:02,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 195 [2022-11-16 11:41:02,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 435 transitions, 4403 flow. Second operand has 26 states, 26 states have (on average 166.07692307692307) internal successors, (4318), 26 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:02,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:41:02,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 195 [2022-11-16 11:41:02,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:41:09,081 INFO L130 PetriNetUnfolder]: 1425/17592 cut-off events. [2022-11-16 11:41:09,081 INFO L131 PetriNetUnfolder]: For 23029/23029 co-relation queries the response was YES. [2022-11-16 11:41:09,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33129 conditions, 17592 events. 1425/17592 cut-off events. For 23029/23029 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 177072 event pairs, 195 based on Foata normal form. 90/17171 useless extension candidates. Maximal degree in co-relation 31905. Up to 790 conditions per place. [2022-11-16 11:41:09,255 INFO L137 encePairwiseOnDemand]: 183/195 looper letters, 308 selfloop transitions, 350 changer transitions 0/813 dead transitions. [2022-11-16 11:41:09,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 813 transitions, 9615 flow [2022-11-16 11:41:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-16 11:41:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-16 11:41:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8511 transitions. [2022-11-16 11:41:09,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8558069381598793 [2022-11-16 11:41:09,269 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8511 transitions. [2022-11-16 11:41:09,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8511 transitions. [2022-11-16 11:41:09,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:41:09,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8511 transitions. [2022-11-16 11:41:09,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 166.88235294117646) internal successors, (8511), 51 states have internal predecessors, (8511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:09,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 195.0) internal successors, (10140), 52 states have internal predecessors, (10140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:09,312 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 195.0) internal successors, (10140), 52 states have internal predecessors, (10140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:09,312 INFO L175 Difference]: Start difference. First operand has 365 places, 435 transitions, 4403 flow. Second operand 51 states and 8511 transitions. [2022-11-16 11:41:09,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 813 transitions, 9615 flow [2022-11-16 11:41:09,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 813 transitions, 9381 flow, removed 113 selfloop flow, removed 3 redundant places. [2022-11-16 11:41:09,506 INFO L231 Difference]: Finished difference. Result has 425 places, 621 transitions, 8060 flow [2022-11-16 11:41:09,507 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=4293, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8060, PETRI_PLACES=425, PETRI_TRANSITIONS=621} [2022-11-16 11:41:09,507 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 245 predicate places. [2022-11-16 11:41:09,507 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 621 transitions, 8060 flow [2022-11-16 11:41:09,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 166.07692307692307) internal successors, (4318), 26 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:09,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:41:09,509 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:09,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:09,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:41:09,715 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:41:09,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash -723934993, now seen corresponding path program 1 times [2022-11-16 11:41:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:09,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743371302] [2022-11-16 11:41:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 11:41:10,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:10,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743371302] [2022-11-16 11:41:10,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743371302] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:10,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032004439] [2022-11-16 11:41:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:10,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:10,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:41:10,591 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:41:10,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:41:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:10,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:41:10,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 1 proven. 323 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 11:41:11,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 1 proven. 323 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 11:41:11,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032004439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:41:11,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:41:11,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2022-11-16 11:41:11,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206190372] [2022-11-16 11:41:11,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:41:11,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:41:11,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:11,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:41:11,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:41:11,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 195 [2022-11-16 11:41:11,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 621 transitions, 8060 flow. Second operand has 24 states, 24 states have (on average 166.5) internal successors, (3996), 24 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:11,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:41:11,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 195 [2022-11-16 11:41:11,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:41:22,981 INFO L130 PetriNetUnfolder]: 2247/26603 cut-off events. [2022-11-16 11:41:22,981 INFO L131 PetriNetUnfolder]: For 44931/44931 co-relation queries the response was YES. [2022-11-16 11:41:23,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51703 conditions, 26603 events. 2247/26603 cut-off events. For 44931/44931 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 295735 event pairs, 210 based on Foata normal form. 134/25991 useless extension candidates. Maximal degree in co-relation 50813. Up to 1278 conditions per place. [2022-11-16 11:41:23,302 INFO L137 encePairwiseOnDemand]: 183/195 looper letters, 196 selfloop transitions, 719 changer transitions 0/1070 dead transitions. [2022-11-16 11:41:23,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1070 transitions, 16171 flow [2022-11-16 11:41:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:41:23,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 11:41:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6487 transitions. [2022-11-16 11:41:23,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.852991452991453 [2022-11-16 11:41:23,310 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6487 transitions. [2022-11-16 11:41:23,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6487 transitions. [2022-11-16 11:41:23,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:41:23,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6487 transitions. [2022-11-16 11:41:23,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 166.33333333333334) internal successors, (6487), 39 states have internal predecessors, (6487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:23,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 195.0) internal successors, (7800), 40 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:23,335 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 195.0) internal successors, (7800), 40 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:23,335 INFO L175 Difference]: Start difference. First operand has 425 places, 621 transitions, 8060 flow. Second operand 39 states and 6487 transitions. [2022-11-16 11:41:23,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1070 transitions, 16171 flow [2022-11-16 11:41:23,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 1070 transitions, 14982 flow, removed 357 selfloop flow, removed 16 redundant places. [2022-11-16 11:41:23,659 INFO L231 Difference]: Finished difference. Result has 444 places, 964 transitions, 14571 flow [2022-11-16 11:41:23,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=7101, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14571, PETRI_PLACES=444, PETRI_TRANSITIONS=964} [2022-11-16 11:41:23,661 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 264 predicate places. [2022-11-16 11:41:23,661 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 964 transitions, 14571 flow [2022-11-16 11:41:23,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 166.5) internal successors, (3996), 24 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:23,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:41:23,662 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:23,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:23,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:23,868 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:41:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:23,869 INFO L85 PathProgramCache]: Analyzing trace with hash -38414424, now seen corresponding path program 1 times [2022-11-16 11:41:23,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:23,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860680125] [2022-11-16 11:41:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:23,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:41:24,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:24,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860680125] [2022-11-16 11:41:24,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860680125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:24,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259932834] [2022-11-16 11:41:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:24,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:24,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:41:24,453 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:41:24,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:41:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:24,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:41:24,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:41:25,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:41:25,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259932834] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:41:25,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:41:25,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-16 11:41:25,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728965385] [2022-11-16 11:41:25,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:41:25,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:41:25,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:25,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:41:25,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:41:25,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 195 [2022-11-16 11:41:25,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 964 transitions, 14571 flow. Second operand has 22 states, 22 states have (on average 166.45454545454547) internal successors, (3662), 22 states have internal predecessors, (3662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:25,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:41:25,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 195 [2022-11-16 11:41:25,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:41:43,744 INFO L130 PetriNetUnfolder]: 3421/39244 cut-off events. [2022-11-16 11:41:43,744 INFO L131 PetriNetUnfolder]: For 72652/72652 co-relation queries the response was YES. [2022-11-16 11:41:44,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78351 conditions, 39244 events. 3421/39244 cut-off events. For 72652/72652 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 474775 event pairs, 890 based on Foata normal form. 179/38276 useless extension candidates. Maximal degree in co-relation 77091. Up to 2084 conditions per place. [2022-11-16 11:41:44,390 INFO L137 encePairwiseOnDemand]: 184/195 looper letters, 245 selfloop transitions, 1190 changer transitions 0/1590 dead transitions. [2022-11-16 11:41:44,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1590 transitions, 26471 flow [2022-11-16 11:41:44,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:41:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:41:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5514 transitions. [2022-11-16 11:41:44,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8568764568764569 [2022-11-16 11:41:44,396 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5514 transitions. [2022-11-16 11:41:44,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5514 transitions. [2022-11-16 11:41:44,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:41:44,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5514 transitions. [2022-11-16 11:41:44,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 167.0909090909091) internal successors, (5514), 33 states have internal predecessors, (5514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:44,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 195.0) internal successors, (6630), 34 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:44,416 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 195.0) internal successors, (6630), 34 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:44,416 INFO L175 Difference]: Start difference. First operand has 444 places, 964 transitions, 14571 flow. Second operand 33 states and 5514 transitions. [2022-11-16 11:41:44,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1590 transitions, 26471 flow [2022-11-16 11:41:44,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1590 transitions, 25593 flow, removed 408 selfloop flow, removed 5 redundant places. [2022-11-16 11:41:45,016 INFO L231 Difference]: Finished difference. Result has 468 places, 1451 transitions, 25184 flow [2022-11-16 11:41:45,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=13638, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=25184, PETRI_PLACES=468, PETRI_TRANSITIONS=1451} [2022-11-16 11:41:45,018 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 288 predicate places. [2022-11-16 11:41:45,018 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1451 transitions, 25184 flow [2022-11-16 11:41:45,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 166.45454545454547) internal successors, (3662), 22 states have internal predecessors, (3662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:45,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:41:45,020 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:45,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 11:41:45,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:45,226 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:41:45,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:45,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1878498385, now seen corresponding path program 2 times [2022-11-16 11:41:45,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:45,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678525408] [2022-11-16 11:41:45,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:45,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:41:46,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:46,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678525408] [2022-11-16 11:41:46,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678525408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:46,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660917768] [2022-11-16 11:41:46,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:41:46,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:46,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:41:46,320 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:41:46,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767828dd-50ce-4dcd-8501-a7e6dbdc09e6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:41:46,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:41:46,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:41:46,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:41:46,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 11:41:47,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 11:41:48,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660917768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:41:48,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:41:48,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 33 [2022-11-16 11:41:48,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550163066] [2022-11-16 11:41:48,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:41:48,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 11:41:48,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:48,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 11:41:48,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:41:48,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 195 [2022-11-16 11:41:48,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1451 transitions, 25184 flow. Second operand has 34 states, 34 states have (on average 166.05882352941177) internal successors, (5646), 34 states have internal predecessors, (5646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:48,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:41:48,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 195 [2022-11-16 11:41:48,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand